Dateline NBC

The suspicious death of Sarah Hartsfield's fifth husband leads investigators to a past filled with failed romances and wild allegations.

A house fire in South Texas kills Patricia Leigh Mills while her young son miraculously escapes. When Patricia Leigh's widower, Delbert, marries a woman named Allison less than 3 months later, her family becomes convinced he was involved. After Allison is arrested in a murder for hire plot, the question remains: did Delbert have help?INTERVIEWS WITH: Delbert Mills, Patrick and Allison Salinas. 

Jimmie "Jay" Lee, a popular and beloved student at the University of Mississippi, vanishes from his apartment early one July morning and is never seen again.

Officials quickly rule a Georgia man's death a suicide after his wife tells authorities that he shot himself; believing there is more to the story, his family hires a private investigator, who uncovers troubling details.

When American University professor Sue Marcum is found murdered in her Maryland home, it appears to be a burglary gone wrong. But DNA from the scene tells a different story, pointing detectives toward someone she trusted. A years-long international hunt leads to a dramatic arrest and long-awaited justice. INTERVIEWS WITH: Sue's brother and his wife Alan and Barbara Marcum, FBI agents in Baltimore and Guadalajara, Prosecutors Debbie Feinstein and Ryan Wechsler, Defense Attorneys Meghan Brennan and Tatiana David, and others.

A wealthy podiatrist and his girlfriend plot to hire a hit man to kill his wife, but the would-be assassin alerts police; years later, a shocking new chapter after their release, as one of them allegedly attempts to revive the murder plot.

In her first interview since her mother's disappearance, "Today" co-anchor Savannah Guthrie recounts her family's fears and anguish, as well as their hope for answers.

Dateline examine the case of Brendan Banfield, the Virginia father found guilty earlier this year of murdering his wife and a second victim in a case that captured global attention.The broadcast features never-before-seen footage of the family's au pair, Juliana Peres Magalhaes, speaking with police following the killings, prior to pleading guilty to charges related to the case. Authorities later revealed she had been involved in a relationship with Banfield and colluded with him in the murders.

Alice Ku, a California tutor, vanishes during a trip to Taiwan. Her family embarks on a desperate search spanning two continents but as investigators dig deeper, secrets emerge and a trail of digital evidence contradicts everything they thought they knew.INTERVIEWS WITH: Alice's sisters Josephine and Grace Ku, civil attorneys Andrew Watters and Todd Davis, defense attorney Chuck Smith and more.

Found Guilty of Shooting His In-Laws, Serafini Maintains His Innocence & Says He Was ‘Crucified' By Jury: ‘The Justice System Failed'.In his first-ever interview, former MLB pitcher Dan Serafini speaks with Dateline correspondent Keith Morrison. In the exclusive sit-down, Serafini maintains his innocence following his conviction earlier this year for shooting his in-laws at their home in Lake Tahoe. The broadcast also features interviews with key figures in the investigation, including Detective Daniel Meier, Placer County District Attorney Morgan Gire and more.

After Gary "Big Daddy" Farris mysteriously disappears, his family discovers his remains on their sprawling 10-acre estate. An investigation reveals a family deeply divided by jealousy and greed, but did one of them kill Big Daddy?

When young father Rob Limon is murdered at work, the investigation uncovers deep secrets about sex, friendship, religion and family. Sunday's broadcast explores the twisted case featured in Dateline's #1 podcast, Deadly Mirage.

An elderly socialite is reported missing from her stately New York City brownstone. When Sante Kimes and her son Kenny are arrested, an investigation reveals decades of crime, deception and murder that captivated the nation.   INTERVIEWS WITH: Kenny Kimes, Kenny's half-brother Kent Walker, Kent's high school girlfriend Rhonda Martin, Detectives Thomas Hovagim, Bill Cox, and Ed Murray, Private Investigator John Doty, TV Producer Maria Zone, Ken Holmgren, son of Sante Kimes' suspected murder victims

During "Under the Bay Bridge," San Francisco Police Sergeant Brent Dittmer reveals that his team chose not to publicly dispute any theories that Lee was a victim of a robbery,  even though he believed early on that the person responsible for Lee's murder wasn't after his money. He tells Mankiewicz, "If that's the story people are gonna run with, that is an advantage for us because the people who are responsible, we don't want to know what we know." He continued, "Let everybody think that this is whatever's on Twitter at that time. We'll work on what actually happened." Lee's former wife also had a hard time believing he was robbed, explaining, "Had Bob been approached by someone that was trying to mug him, he would've given him, them, the shirt off his back, his wallet, his keys, his clothes. He would've said, ‘Hey, man, let me buy you a meal. Please don't hurt me.'"

Return to the Lake, provides an exclusive inside look at the case that riveted the country, through in-depth interviews with Susan Smith's defense attorney, David's current wife, and the Chief of SLED, as well as rarely heard interrogation audio of Susan from the initial investigation. Friday's broadcast is a continuation of Dateline's decades-long reporting on Smith, who recently was denied parole in November. 

The murders of teenagers Abby and Libby in their close-knit hometown of Delphi, Indiana spark worldwide headlines. The high-profile case takes a stunning twist after detectives reveal Libby captured a video of the killer shortly before her death - a crucial piece of evidence that helps police track down the murderer. During the two-hour Dateline, correspondent Andrea Canning speaks with insiders in the case, including the defense attorneys for the killer.

After 25-year-old Chantay Blankinship's remains are found at an abandoned building that locals call the Haunted House, investigators sort through dead-end leads until a stunning confession during a church service changes everything.

In her first TV interview, convicted murderer Lori Vallow Daybell speaks to Dateline correspondent Keith Morrison. In the exclusive sit down, Lori maintains her innocence after she and her husband Chad Daybell were found guilty of murdering her children, JJ and Tylee. Chad was also found guilty of murder and conspiracy in the death of his previous wife Tammy and Lori was found guilty of conspiring to kill Tammy.

A middle school art teacher is shot to death in the home she shared with her husband; new evidence and testimonies poke holes in the story of a harmonious three-way affair between the couple and a mutual friend. 

The unexplained death of a beloved chiropractor becomes a criminal investigation when authorities discover she'd been poisoned; nearly a decade after the murder, a court makes a dramatic decision about the young woman at the heart of the case.

Kansas couple Mike Sisco and Karen Harkness are found dead by their parents before a family fish fry in 2002. A years-long search for evidence and three criminal trials over two decades reveal strained dynamics within one victim's family.INTERVIEWS WITH: Mike Sisco's mother Carol Sisco, daughter Hailey Seel, sister Cathy Boots and brother-in-law Mark Boots; Karen Harkness' daughter Erin Harkness Sutton and son Chad Harkness; Fmr. Topeka police Sgt. Richard Volle; Shawnee County District Attorney Mike Kagay; and others.

A college student home for the summer goes missing while jogging; her closeknit Iowa town comes together to search for her until investigators discover security camera video that reveals a critical clue. 

A girl returns home from school to find her father, celebrity hairdresser Fabio Sementilli, brutally murdered in their backyard. A neighbor's security camera helps investigators identify unlikely suspects as the murder captivates not just Hollywood, but the country. 

Jasmine "Jazzy" Pace mysteriously vanishes, missing her family's Thanksgiving dinner. Determined to track her down, her family takes matters into their own hands, pursuing every digital clue she left behind. 

West Virginia pharmacist Natalie Cochran is left widowed after her 38-year-old husband Michael suddenly dies. Their closeknit neighborhood rallies around Natalie and her two young children until troubling details emerge regarding the couple's new business venture.

Beloved 18-year-old college student Anita Knutson is found stabbed to death in her apartment. The case takes nearly eighteen years and the undying commitment of friends, family, and investigators to reach resolution.

A beloved Staten Island teacher is found dead in the home she shared with her husband; an unknown number in her cell phone leads investigators to reveal troubles in her seemingly idylliclife - and to ultimately unearth her killer.

Exclusive new details about the investigation into the murders of four University of Idaho students are revealed; featuring never-before-reported evidence that investigators say track the accused killer's movements.

Ahead of the Sean Combs trial, Josh Mankiewicz reports on Combs's life and the events that triggered a five-count federal indictment that includes racketeering and sex trafficking.

When Angela Craig, a healthy mother of six, dies suddenly after an apparent medical illness, her community is stunned. As investigators dig deeper, suspicion shifts to her husband James – a respected local dentist and member of the LDS church.

Days after landing the biggest audition of her acting career, newlywed Shannon Madill Burgess fails to show up for a family gathering, leaving her loved ones in a panic. As investigators dig deeper, unsettling details emerge that change the direction of the investigation.

A teacher's aide fails to return to work following a nor'easter; days later, she is found dead.

During the two-hour broadcast, correspondent Josh Mankiewicz reports on the murder of Colorado mother Kristil Krug. As investigators initially think the case is pointing to an obvious suspect, they uncover an elaborate plot that turns everything upside down.

When acupuncturist Jon Tokuhara is shot dead in his clinic, investigators uncover a tangled love life and several persons of interest -- until security video reveals an unexpected suspect.

A group of conspirators, including a self-proclaimed Nepalese prince, defraud and kill a retired art collector and legendary Palm Springs socialite in one of the longest and most expensive missing-persons investigations in California history.

The quiet community of Chevy Chase, Maryland is shaken when wife and mother Leslie Preer is found murdered in her shower. Detectives find plausible suspects quickly, but without evidence the case goes cold until a surprising lead unmasks the killer two decades later.INTERVIEWS WITH: Leslie's siblings and daughter Lauren Preer, Montgomery County Police Officer Jim Barnett, Detectives Ed Golian, Tara Augustin and Alyson Dupouy, Leslie's boss Brett Reedy and others

The latest chapter in the 2014 murder of Florida State law professor Dan Markel takes viewers inside the case of a wealthy Florida family tied to an elaborate murder-for-hire plot;

When the wife of a Florida kidney doctor reports a burglary from their waterfront mansion, authorities arrive to find the doctor dead at the bottom of the stairs; investigators discover a connection to the murder of another doctor decades earlier.

The disappearance of a mother of five sends shockwaves through the picturesque town of Bardstown, Kentucky, which witnesses five murders in four years; frustrated with stalled progress, her family takes the investigation into their own hands.

Investigators discover a car engulfed in flames in a remote wooded area near the Blue Mountains; when first responders pull the body of a local mother from the wreckage, the question arises: was the crash an accident, or something far more sinister?

In rural Wisconsin, a couple is found stabbed to death at home. Thirty years later, the daughter of one of the original suspects comes forward, reigniting the case. Keith Morrison reports.

When Tom Perez Jr.'s father fails to return home after a quick trip to check his mail, Tom Jr. calls police for help — only to find himself the focus of their investigation. He would ultimately spend more than 24-hours speaking with police, an ordeal that pushed him to the brink and raised urgent questions about what can happen inside an interrogation room. Then, a stunning revelation upends the case. INTERVIEWS WITH: Perez family friend Carl Peraza, Community Service Officer Joanna Pina, Detectives David Jenusz and Kyle Guthrie, and others.

Responding to a call at an Iowa farmhouse, police discover Karina Cooper sitting on her husband's blood-covered body in his recliner. In the aftermath of his murder, rumors sweep through the small town, but detectives must uncover whether the talk is gossip or a crucial clue.INTERVIEWS WITH: Ryan Cooper's brother Aaron Cooper and sister Michelle Wilson, friends of the couple Ashton Wilson, Jamie and Carmen Earhart and Kirstie Seda, Detective Trevor Killian, Sheriff Casey Schmidt and others. 

Andrea Canning reports on the latest twists and turns in the case in which firefighters discovered a New Jersey man dead in a house fire, but an autopsy revealed he had been shot to death.

A mother searches for answers in the unsolved murder of her 14-year-old daughter until new DNA technology changes everything.

When Corey Shaughnessy wakes up to gunfire in the middle of the night, she shoots at the intruder and miraculously survives, only to discover that her husband Ted has been killed. Detectives wonder if the couple's job as local jewelry shop owners could be a possible motive until the investigation takes a turn that no one saw coming. INTERVIEWS WITH: Corey Shaughnessy, Nicolas Shaughnessy, Travis County Sheriff's investigators James Moore and Paul Salo, Defense Attorney Rick Flores, family friends Tad Cole and Vicki Frenk, and others.

New details on the latest twist in the murder-for-hire plot involving a prominent Florida family that left law professor Dan Markel dead and a grandmother arrested.

Navy petty officer and devoted mother Sherri Malarik is found shot to death in her minivan after she disappeared. The case remains cold until new revelations and old memories resurface, dividing the Florida family. In Friday's two-hour Dateline, her grown-up children speak out about the two-decade search for answers.INTERVIEWS WITH: Tera and Jacob Malarik, Tina and Jeff Leake, Jennifer Spohn, Detective Buddy Nesmith, State Attorney's Office investigator Wayne Wright, Assistant State Attorney Amy Shea, Defense Attorney Chris Crawford, and others.

When a package bomb explodes at a day spa in Southern California, killing beloved esthetician Ildiko Krajnyak and injuring two clients, law enforcement discovers that the bomb was intended specifically for her. Who would want Ildiko dead? An investigation into her love life reveals several possibilities.INTERVIEWS WITH: Valerie Stone, FBI agents Nick Vicencia and Ashley Mericle, Orange County Sheriff's Department investigator Jack Ackerman, prosecutors Annamartine Salick and Mark Takla, and others. 

A mystery looms over a small New York town when a woman is murdered and a stunning secret is exposed; more than a decade later, new developments lead to an unexpected conclusion.

A series of mysterious events turn deadly for a housesitter; police retrace her last day for clues.

Idaho resident Christopher Tapp is sentenced to life after falsely confessing to the murder of his friend Angie Dodge. When the real killer is caught over 20 years later, the case appears to finally be closed until a chilling twist begins a new chapter in the decades-long saga. Friday's two-hour episode features the latest developments, including correspondent Keith Morrison's sit-down with Tapp. NEW INTERVIEWS WITH: Chris Tapp, Bill Squires, Jeremy Sargis, Steven Drizin, CeCe Moore.

New interviews and never-before-seen evidence about the murder of Jennifer Dulos, including video and photos from residential security systems and urban police cameras that detail the timeline of the crime.

When a firefighter is killed, the murder investigation unravels a web of secrets, a love triangle and stunning surveillance footage.

After a 25-year-old mother is gunned down in broad daylight by a murderer wearing a disguise, detectives confront a most unlikely suspect. NEW INTERVIEWS WITH: Det. Trey Downs, Det. Dean Boone, Chief Roy Whitehead, Buddy Allen, Michael Vickers, Jennifer Bagby.

Twenty-seven-year-old Egypt Covington is found murdered in her home; investigators in Michigan quickly identify a person of interest but years pass without an arrest.

Keith Morrison reports new revelations in the murder case of professional cyclist Moriah Wilson that made world-wide headlines. The two-hour broadcast will include fresh courtroom evidence, a police interview with a key witness and an exclusive interview with the killer's plastic surgeon, who was unaware of the murderer's intentions to elude authorities.NEW INTERVIEWS WITH: Dr. Jorge Badilla, Det. Richard Spitler, Det. Jonathan Riley, Deputy U.S. Marshals Damien Fernandez and Emir Perez, and Christopher Stricklen

When Joy Hibbs is found dead in a house fire, an autopsy shows she was murdered beforehand. Even with multiple suspects, the investigation stalls, leaving the case cold for years. Decades later, a shocking secret is revealed.NEW INTERVIEWS WITH: Det. Michael Slaughter, Charlie and David Hibbs, D.A. Jen Schorn, April Atkins.

The separate murders of two women in Toronto ignite an investigation that spans four decades, taking detectives from the big city to a remote, northern town. The case is finally cracked when diligent old-fashioned detective work is combined with modern breakthroughs in genetic genealogy.NEW INTERVIEWS WITH: Det. Stephen Smith, Det. Andrew Doyle, Det. James Atkinson, Sean McCowan, Ben Tice, Vanessa Vansittart and Kristin Basso.

When a New Jersey woman goes missing, investigators uncover her husband's chilling history, including dark secrets about another missing wife. Would he be caught before he put another woman in danger?   INTERVIEWS WITH: Det. Dave Mansue, Former Supervisory Special Agent Bob Hilland, Dedy Childers, Sherrie Davis.

A Southern California woman's fall down the stairs initially appears to be a fatal accident, but when deputies arrest her husband, his story unravels. For the first time, the victim's family speaks out to Dateline correspondent Keith Morrison.INTERVIEWS WITH: Theresa Neubauer, Frank and Samantha Gaulden, Peter Arsuaga, Kim Gadberry, Kristi Christensen, Jon and Rochelle Brannon. 

When the wife of a popular Atlanta DJ is found murdered with her two young children at home, investigators try to unravel what happened. The chilling echo of another DJ's murder just months prior raises suspicions of a targeted attack on the city's music community.INTERVIEWS WITH: Jeezy, Nick Love, Tommy Jackson, Christina Lee, Sabrena Swinger

A group of women help bring down a smooth talking serial predator turned killer who lured young women with promises of fame and fortune.

When two women are murdered in the same Arlington, Texas apartment complex within the same year, police are stumped, and panic spreads across the city. Three years later, forensic evidence from two subsequent rapes provides a breakthrough, bringing the murderer and serial rapist to justice.INTERVIEWS WITH: Chima Benson, Adriane Fields, Det. Tommy LeNoir, Investigator Joel Stephenson, Hiep Vu.

When a nurse is gunned down in her home, detectives initially believe they have a clear suspect. As they delve deeper into the investigation, new information leads them down a completely different path.INTERVIEWS WITH: Det. Bobby Kenny, Det. Joe Espino, and Marcel Fomotar. 

When a woman who is eight months pregnant vanishes before her own baby shower, her family begins a desperate search. As detectives struggle to unravel the chilling mystery, they wonder: is it a missing persons case, or something far more sinister? Derrica and Natalie Wilson of the Black and Missing Foundation step in to advocate for answers.INTERVIEWS WITH: Derrica & Natalie Wilson (Co-founders, Black and Missing Foundation), Detectives Jill Beauregard and Terry McLarney, FBI Agents Summer Baugh and Patrick Dugan.

A teenager's life is turned upside down by a shocking discovery as what seems like a fatal accident reveals itself to be something much more disturbing.

The season 33 premiere of Dateline investigates the case of a young Ohio woman who vanishes one summer night prompting her community to conduct a massive search. When she's found dead, investigators question her friends and family to uncover her killer.INTERVIEWS WITH: Ally & Dave Markham, Investigator Paul Newton, Reporter Karin Johnson.

A new father is found dead on the side of a road.  Then the shocking stabbing of a young woman in broad daylight leads police on a high-speed chase.  Investigators wonder: are these two chilling murders connected?INTERVIEWS WITH: Tonya Hilbert, Cathy Hudson, Mallory Goins, Sam Marquez, Jeff and Ericka Sharp. 

A 16-year-old calls 911 to report a break-in at her family's home. When police arrive, they discover her mother has been murdered, launching a years-long investigation that featured a false confession and revealed a dangerous romance.

The high profile murder trial of Karen Read, who was accused of killing her Boston police officer boyfriend.

A murder unearths an unsolved mystery from years earlier; as the connection between the two cases becomes clear, a long -hidden truth surfaces.

After a Halloween party at a country club, a wife and mother of four vanishes. Nearly a decade later, a private investigator claims to uncover chilling new clues that turn the town upside down.INTERVIEWS WITH: Jason Creasy, Ashley Swift, Terry McCreight, Heather Cohen.

The broadcast features a new interview with Los Angeles District Attorney George Gascón, who recently filed a motion for a resentencing hearing for the brothers. As a scripted tv show reignites public interest in the Menendez case, Dateline will report on the latest, including a letter seemingly written by Erik to his cousin before the murders.During The Menendez Brothers: Chance at Freedom, the prosecutor from the brothers' 1993 trial, Pamela Bozanich, opens up about defending herself against a wave of recent online criticism. She tells Morrison in a new interview that she bought a Mossberg shotgun to arm herself, which is the same type of gun used in the killings of the brothers' parents.The episode also features interviews with additional key players in the case, including never-before-aired excerpts from Morrison's 2017 interview with Lyle.

A former ballerina falls in love with a man 30-years her senior, but their love story quickly spirals out of control after accusations of abuse. Did she shoot her husband in self-defense or was it murder?  Dubbed the ‘Black Swan' case, the ensuing investigation and dramatic trial sparked protests and received national attention.INTERVIEWS WITH: Lt. Daniel Dickerman, Detective Justin Warren, Dr. Barbara Russell, Stephanie Murphy, Neil Taylor, Suzanne O'Donnell.

After millionaire businessman Lance Herndon is bludgeoned to death in his suburban Atlanta home, the search for his killer reveals no shortage of suspects - or secrets.

Dateline reports on the dramatic updates in the case of international fugitive Nicholas Rossi who faked his death as law enforcement closed in on him after allegations of rape and fraud; will the man with multiple identities finally face justice?

After an apparent brazen home invasion during the holiday season in a quiet Connecticut community leaves Connie Dabate dead, investigators discover a silent witness that cracks the case wide open.  

Latest in the investigation into the murder of four University of Idaho students.

Nearly 40 years after young wife and mother Cathy Krauseneck is found murdered with an axe in her upstate New York home, a new team of investigators joins the cold case to uncover the killer.  

A deadly high-speed chase in Montana leads "Dateline" on a search through 50 years of history to unravel the mystery of how one man turned into a monster and committed one of the state's most notorious crimes.

A quiet North Dakota college town is left in fear after 22-year-old student Mindy Morgenstern is found murdered in her off-campus apartment. Detectives investigate neighbors, friends and boyfriends before they discover the killer hiding in plain sight.INTERVIEWS WITH: Larry and Eunice Morgenstern, Jason and Rebecca Young, former North Dakota Bureau of Criminal Investigation Agent Mark Sayler, Prosecutor Jonathan Byers, and more.

The missing-persons case of 12-year-old Jonelle Matthews in Colorado remains a mystery for more than three decades until detectives narrow in on a suspect whose bizarre behavior after her disappearance hints at something much more sinister.

A Florida father is determined to find out what happened to his daughter after her fatal fall from a penthouse apartment in Belgium. Dennis Murphy reports

The latest in the trial of once prominent South Carolina lawyer Alex Murdaugh, including exclusive interviews with insiders close to the family.

When a Colorado mother vanishes without a trace, the detective investigating her disappearance discovers a connection to a previous assault; for the first time on television, the survivor of that attack recounts her terrifying ordeal.

The murder of former NBA star and hometown hero Lorenzen Wright sends shockwaves through the city of Memphis; insiders speak out about new developments in the lengthy search for justice.

The lead investigator speaks out about the murder of world-renowned snake breeder Ben Renick, found shot to death in a facility crawling with thousands of snakes.

The parents of Kristin Smart speak out in their first network exclusive interview since the recent sentencing of their daughter's killer.

After 27-year-old Jonathan Crews dies mysteriously in his Texas apartment, his family takes matters into their own hands in an effort to find answers.  

The latest in the murder of Laci Peterson, including new details on the appeals of convicted killer Scott Peterson. Keith Morrison reports.

The discovery of a young woman's body in an abandoned building in rural Texas sparks a multi-state investigation lasting nearly two decades.

The man at the center of the international manhunt for an American fugitive accused of faking his own death to evade law enforcement agencies speaks out for the first time on network television.

When a woman's fifth husband dies in a hospital under suspicious circumstances, an investigation reveals her to be a charismatic charmer with a mysterious past.  

A man convicted of the 1997 murder of Ricky Cowles Jr. in Lancaster, California, reveals new details on the case in an exclusive interview.

New details come to light on the investigation into a notorious Idaho case.

Exclusive new details on the investigation into the murders of four University of Idaho students.

The murder of a local 22-year-old sends shockwaves through the Arkansas Ozarks.

After a district attorney and his wife are murdered in the same Texas town where a prosecutor was gunned down two months earlier, local law enforcement fears they may be in the sights of a serial killer.

After a mother is found murdered in her Virginia home, her son embarks on a 20-year quest for justice that leads him down a dark and twisted path.

Law enforcement officers investigate a string of deadly shootings targeting women in the border city of Laredo, Texas.

Following her husband's sudden death, a Utah mother-of-three writes a book to help her children through their grief; But when investigators learn the cause of death and dig deeper into their lives, she is charged with murder.

In the exclusive interview, Darrin speaks out about his relationship with Jamie's wife, Jennifer Faith, which began when they dated in high school. When the pair reconnected decades later, Darrin says he was manipulated by her false allegations of Jamie's abuse. Darrin tells Dateline that when he committed the fatal shooting, it felt like he was on a "mission in the military," adding, "I was doing what I had to do to protect Jennifer."Losing Faith also features interviews with homicide detective Chris Walton, detective Eric Barnes, federal prosecutor Rick Calvert, reporter Cyrus Cezar AKA ‘Smash Da Topic,' Darrin's attorney Juan Sanchez, friends and family members, and others.

When high school student Megan Nichols vanishes from her Illinois home, her mother finds a note saying that she ran away; a grisly discovery made three years later changes the course of the investigation.

When three women discover the body of Emily Noble in a wooded area near her home nearly four months after she went missing, investigators must determine if her death was a suicide or homicide. In Friday's new Dateline, Emily's husband, Matt Moore, speaks out in an exclusive interview about the case that rocked a small Ohio town.

The investigation into the poisoning death of Wisconsin mother-of-two Julie Jensen takes a surprising turn when detectives learn that Julie wrote a letter just days before her death pointing to a possible suspect. INTERVIEWS WITH: Pleasant Prairie Police Department Captain Barry Ollila, former Kenosha County District Attorney Bob Jambois, Private Investigator Dave Ellis, coworkers of Julie's husband Mark Jensen, and others.

A small Texas town is shattered when beloved teacher Manuela Allen vanishes from her home in the middle of the night. When a gruesome discovery is made a short time later at a local lake, investigators are left with more questions than.INTERVIEWS WITH: Julius Mullins, Texas Ranger Michael Schraub, family members, and others.

When young pregnant mother Bethany Decker goes missing in Virginia, her family embarks on a frantic search, but the case eventually goes cold. Years later, investigators speak with a woman who tells a harrowing story and may hold the key to solving the case.INTERVIEWS WITH: Investigator Mark Bush and Steve Schochet, Bethany's family members, and others. 

After an apparent home invasion in Minnesota leaves 25-year-old Heidi Firkus dead and her husband Nick hospitalized, detectives learn the young couple was facing financial troubles. In Friday's all-new Dateline, insiders connected to the case speak out about the decade-long search for justice. INTERVIEWS WITH: Heidi's brother Pete Erickson and sister-in-law Jolene Erickson, Nick's second wife Rachel, Nick's close friends, and others.

A small town in the Ohio River Valley is left in shock after beloved local coal miner Brad McGarry is found fatally shot in the basement of his home. As investigators dig into his personal life, a secret affair reveals a surprising suspect.INTERVIEWS WITH: Belmont County Chief Detective Ryan Allar, Bellaire Police Officer Hank Martin, former mine foreman Franco Pinacchio, Brad's friends, and others.

The murders of two young women near a Phoenix canal in the early 1990s remain unsolved for over 20 years until a team of cold case detectives take on the case. Friday's all-new Dateline examines how investigators used inventive techniques and groundbreaking advancements in forensic genealogy to unmask the killer.INTERVIEWS WITH: Former Phoenix Police Department Sergeant Troy Hillman, Defense attorney RJ Parker, forensic genealogist Dr. Colleen Fitzpatrick, co-workers of the victims, and others.

After nurse and mother-of-three Becky Bliefnick is found fatally shot inside her Illinois home, investigators uncover security camera footage that could be key to solving the case. INTERVIEWS WITH: Quincy Police Chief Adam Yates, Assistant States Attorneys Josh Jones and Laura Keck, Becky's sister Sarah Reilly, and others.

The investigation into the mysterious disappearance of Canadian limo driver Dwayne Demkiw sparks an international manhunt for an elusive killer with multiple false identities.INTERVIEWS WITH: Edmonton Homicide Detectives Brian Robertson and Rob Bilawey, Dwayne Demkiw's friends Kayla Polihronopoulus and Darren Boisvert, and others.

After police discover the burned body of missing Miami man Camilo Salazar at the edge of the Florida Everglades, the wife of a local supermarket mogul comes forward to reveal a shocking secret and possible lead.INTERVIEWS WITH: Family members, Detectives Chris Villano and Doug McCoy, Miami-Dade State Attorney Katherine Fernandez Rundle, prosecutors Gail Levine and Justin Funck, former Miami Herald reporter David Ovalle, reporter Christian Colon, and others.

Dateline investigates the murders of several women found dead along Gilgo Beach in Long Island, New York.During The Hunt for the Gilgo Beach Killer, Heuermann's former neighbor Jimmy Mack speaks out in his first TV interview, telling Dateline that he "immediately" had a bad feeling about Heuermann. Additionally, Mack revealed that they had a "confrontation" after Heuermann allegedly threatened to cut the tires of a car in Mack's driveway that partially blocked the sidewalk.The special also examines the death of Shannan Gilbert, whose remains were found on Gilgo Beach in December 2011. Speaking out for the first time since Heuermann's arrest, Shannan's sister calls for Suffolk County Police Department to reopen her sister's case.

When United States Air Force Airman Nathan Paet is shot multiple times inside his garage, a trail of clues leads Las Vegas detectives to a secret love affair and a murderous plan.  INTERVIEWS WITH: Las Vegas Homicide Detectives Tod Williams and Laura Andersen, Nathan's family members, and others.

In a Dateline NBC exclusive, lead detectives speak out about the investigation into once-prominent South Carolina attorney Alex Murdaugh, convicted last March of murdering his wife Maggie and son Paul.For the first time, South Carolina Law Enforcement Division investigators Britt Dove and David Owen speak out about the moment they discovered video evidence proving Alex was at the scene of the murders when they occurred. Dove explained to NBC News' Craig Melvin that after listening to the video "three to four times," he was in "disbelief." Owen added he knew at that moment the case had been blown wide open, saying: "I can prove that Alex was lying to me."The Murdaugh Murders: Inside the Investigation also features an interview with the former Murdaugh family housekeeper Blanca Turrubiate Simpson, who opens up about her unique history with the Murdaughs, as well as Judge Clifton Newman, who presided over the murder trial. 

After Tahereh Ghassemi disappears from the Louisiana home she shares with her adult son, detectives discover that she'd recently come into a great deal of money. The investigation reveals an astonishing plot with international implications.INTERVIEWS WITH: Hamed Ghassemi, lead investigator Todd Morris, East Baton Rouge Assistant District Attorney Dana Cummings, and others.

When 17-year-old Alissa Turney is reported missing in Phoenix, it takes years before detectives treat her case as a homicide. A new investigation unearths dark family secrets, leading to a dramatic courtroom drama and an outcome no one saw coming.INTERVIEWS WITH: Detective William Andersen, Alissa's brother James Turney, Deputy County Attorney Vince Imbordino, and others.

When 16-year-old Britney Ujlaky disappears, a small town in Nevada bands together to track down a potential suspect - an unknown cowboy; Soon, their focus turns to someone much closer to Britney.

After trumpet player Scott Sessions fails to show up for a scheduled gig, his family learns his body was abandoned in the remote Colorado Rockies; as the investigation narrows in on two suspects, a second murder catches police by surprise.

When young mother and paramedic Annamarie Cochrane Rintala is found dead at the bottom of her basement stairs, it takes four trials and 13 years before justice is served. In Friday's Dateline, insiders close to the investigation speak out in new interviews about the final verdict.INTERVIEWS WITH: Prosecutor Steve Gagne, defense attorneys Rosemary Scapicchio and Chauncey Wood, and others. 

Keith Morrison reexamines the mysterious death of Las Vegas casino magnate Ted Binion.

A Connecticut mother speaks out about her fight to keep her assailant from walking free.

Investigators search for answers after a 17-year-old is murdered after a Valentine's Day dance.

When a Colorado mother Suzanne Morphew vanishes on Mother's Day in 2020, investigators are left with minimal clues until a recording device exposes a potential motive. New details emerge from exclusive interviews with insiders close to the case. Keith Morrison reports.

When a world-renowned snake breeder is found dead, first responders originally think his missing anaconda could be to blame. As the frantic hunt for a missing snake begins, the investigation soon reveals a tragic family saga and a sinister betrayal. Andrea Canning reports.

A mystery in paradise unfolds when a British woman, Sarm Heslop, vanishes from her boyfriend's luxury yacht in the U.S. Virgin Islands. New details emerge on the case that made international headlines and left investigators with more questions than answers. Andrea Canning reports

While investigating the disappearance of Pamela Butler in Washington D.C., detectives discover a puzzling connection to Virginia resident Marta Rodriguez, who vanished two decades earlier. Dennis Murphy reports.

A family gathering ends with one man dead, leading to more than a decade of questions — was it suicide or murder? Keith Morrison reports on the latest twist in the case.

New details emerge in an alleged murder-for-hire plot targeting a former NYC cop's husband.

When a former Arkansas State Senator is found fatally stabbed, investigators must determine if her murder is connected to her political career or her personal life. Dennis Murphy reports.

The latest in the case of Pam Hupp, charged with murdering her friend Betsy Faria. Keith Morrison interviews Leah Askey, the prosecutor behind the wrongful conviction of Betsy's husband, Russ as well as Betsy's daughter, mother, and husband Russ Faria.

The detectives who cracked the case of Sherri Papini, a California mother who alleged she was kidnapped and held hostage for three weeks in 2016, reveal new details about the investigation that captivated the nation.

Detectives search for answers after 34-year-old mother Annastasia "Annie" Hester is stabbed to death in a Portland, Oregon suburb; investigators uncover personal details that point to multiple suspects and possible motives.

After a prominent plastic surgeon is murdered in his Asheville, North Carolina home, investigators uncover a trail of clues pointing to an unlikely killer. Keith Morrison reports. 

Dateline (again) investigates the 2012 murder of Leslie Neulander, a 61-year-old woman who died in her 8,000 square-foot mansion in DeWitt, New York, a suburb of Syracuse. Neulander's death was initially reported as an accident, that she had a bout of vertigo, slipped and fell in the shower, fatally hitting her head on a marble bench in the shower.In 2015, Leslie's husband, former OB/GYN Dr. Robert Neulander, was found guilty of her murder. After Neulander spent three years in prison, a court overturned the conviction in 2018 because of one juror's misconduct. Throughout his first and second trials, Robert Neulander has received strong support from his two children, Ari and Jenna, and Leslie's sister, Joanne London. 

When an 18-year-old disappears from her Virginia home, the investigation into her inner circle of trusted friends and family reveals a sinister betrayal. Andrea Canning reports.

Chef Dan Brophy arrived for work at the Oregon Culinary Institute in Portland, Oregon, early on Saturday, June 2, 2018.The Culinary Institute, also referred to as OCI, was both a school and a restaurant. That Saturday was a test day for students and as a chef and teacher there, Dan had much to prepare.But just minutes after he got to work, Dan Brophy was shot in the back in Kitchen One. About ten minutes later, a colleague found Dan lying on his back in front of a large kitchen sink. A student called 911.EMTs soon arrived and pronounced Dan Brophy dead. He was 63. Josh Mankiewicz reports.

Amber Heard sits down with NBC News' Savannah Guthrie in her first interview since the defamation trial brought by her ex-husband Johnny Depp.

Keith Morrison reports on the murder of star gravel cyclist Anna Moriah Wilson and interviews insiders in the case that sparked worldwide headlines.

Texas detectives uncover a trail of sexual assault crimes while investigating a murder.

After the cause of the death of Stacy Feldman in her Denver home is ruled as undetermined, friends and family join forces to piece together what happened; insiders close to the case speak out about the seven-year battle for justice.

A family begins a relentless pursuit of justice after the death of Nevada attorney Susan Winters.

The disappearance of Sonya Ivanoff sends shockwaves through the small coastal city of Nome, Alaska.

The investigation into a deadly home invasion involving business owner Milton Sawyer takes a turn when an unlikely witness on the other side of the country comes forward. Dennis Murphy reports.

Firefighters make a grisly discovery while responding to a house fire in a Toronto suburb.

Insiders reveal new details about the deaths and legal cases surrounding Alex Murdaugh.

Investigators embark on a 15 year hunt for the killer of a Wisconsin pharmacist.

Florida detectives investigate a murder mystery in a wealthy gated community.

A hunting safari in Zambia's Kafue National Park ends in a nightmare when a shot rings out from the cabin of dentist Larry Rudolph and his wife, Bianca. Andrea Canning reports.

In this episode, journalist Keith Morrison interviews Brittanee's relatives and friends, including her father Chad Drexel, and investigators about the search for the Chili teenager that spanned more than 13 years.Brittanee was 17 and a Gates Chili High School junior when she went missing in April 2009 while on a spring break trip to Myrtle Beach, a trip she took without her parents' knowledge or permission.During the two-hour-long episode, Morrison also questions Raymond Moody, the man who has admitted to kidnapping and murdering Brittanee Drexel. Authorities believe Brittanee was killed the same day she disappeared.On May 16 of this year, South Carolina authorities announced that Brittanee's remains had been found about 35 miles south of Myrtle Beach. Days later, Moody, a convicted sex offender and longtime person of interest in the case, was charged with kidnapping, murder and first-degree sexual misconduct in Brittanee's death.Moody pleaded guilty in October and admitted he killed Brittanee, saying, "I was a monster when I took Brittanee Drexel's life."Also, during the episode, Morrison interviews Georgetown County Sheriff Investigator Phil Hanna, Myrtle Beach Police Investigator Mike Hull and Captain Kin McKenzie of the South Carolina Law Enforcement Division, who together explain how officers zeroed in on Moody.

The families of George Floyd, Jacob Blake Jr. and Eric Garner open up together in a raw and emotional conversation about their pain, anger and frustration over police violence.

A romantic Mediterranean cruise intended to rekindle the love between a woman and her ex-husband leads to her vanishing; the investigation reveals secret recordings, a surprising star witness and an undercover hit man.aka: The Cruise 

Andrea Canning speaks with U.S. District Court Judge Esther Salas about the deadly shooting at her home in 2020 that killed her son Daniel and critically injured her husband Mark.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

When a University of Utah athlete is found murdered on campus, investigators learn that she had reached out to the campus police for help multiple times before her death.

A massive manhunt ensues after Lois Riess murders her husband in Minnesota and flees to Florida, where she kills and steals the identity of a woman she had just met.

A college student goes missing in broad daylight from her off-campus job at a softball field; investigators receive a mysterious phone call that changes everything.

Professional basketball player Lorenzen Wright goes missing in 2010 and is found dead ten days later; Lorenzen's mother insists she knows who murdered her son and is relentless in helping detectives solve his case.

When the owner of a school promoted as a place to help troubled girls is accused of abusing students, his daughter must decide whose side she's on. Keith Morrison reports.

When Susan Woods doesn't show up for work, she is soon discovered dead in her bathtub; as police search for answers, they find a trail of victims.

Former NXIVM members tell Kate Snow about life inside the controversial self-help group, and life since founder Keith Raniere's conviction on charges including sex trafficking and forced labor.

The parents of missing South Carolina woman Heather Elvis, Debbi and Terry Elvis, open up to Andrea Canning about the search for their daughter.

Witnesses see a woman handcuffed in a parking lot and taken into an unmarked car by a blond woman. But detectives can't find any record of an arrest. Where could she be? Josh Mankiewicz reports.

Amateur internet investigators, new DNA technology and a dogged investigator help police find a killer – and identify a victim for years known only as "Lavender Doe." Keith Morrison reports.

Lead detectives in the murder investigation of University of Utah student MacKenzie Lueck speak exclusively to Keith Morrison about the case that made national headlines.

Exclusive new interviews and details on the deaths surrounding Chad and Lori Vallow Daybell, a case Keith Morrison has been on since it drew national attention after Lori's children disappeared.

When a woman is murdered, a web of sex and lies is uncovered, revealing a prominent family's dark secrets. Detectives and an FBI informant tell Dennis Murphy about the case for the first time.

When Kathleen Schroll makes a phone call that names her killer right before her death, it leads to the arrest of a father for murder. But two trials and 12 years later, authorities begin to wonder if he was the victim, not the villain.

Private investigator and former police officer Taylor Wright vanishes, but detectives think that there is more to the story, after her girlfriend receives strange text messages from Taylor's phone.

A Michigan community is shocked when a local mother is found stabbed to death. After the case goes cold for more than a decade, a bombshell reignites the investigation. Andrea Canning reports.

A wealthy surgeon's whereabouts remain unknown for years after he disappears on vacation in Greece, leaving behind his wife, financial ruin and mounting malpractice suits. Rob Stafford reports.

A mother of two vanishes, and nearly two years later her body is found in the San Diego Bay, but medical examiners say she had only been dead for about a month or two. Keith Morrison reports.

When Kansas prisoner John Manard escapes with the help of Toby Dorr, a 48-year-old prison volunteer and mother of two, investigators scramble to track the pair down;

A mother's search for answers in her son's murder raises questions about whether Chicago police detectives did enough to try to solve his case. Josh Mankiewicz reports.

After a mother and son are found dead, it takes nearly a decade to unravel the case. Andrea Canning reports the latest, including how a second investigation led to a new and unexpected arrest.

After a nightclub owner is gunned down in his home, Chicago police discover the death was a targeted killing, connected to a twisted sense of loyalty and tradition. Natalie Morales reports.

Lester Holt reports on how the investigation into the murder of four-year-old Barbara Jean Horn revealed decades of misconduct across Philadelphia's criminal justice system.

Andrea Canning reports on the epidemic of missing and murdered indigenous women; how jurisdictional rules between tribal and non-tribal law enforcement can leave families alone in their search for answers; and on the growing movement demanding change. 

On the morning of September 11th, 2001, 40 men and women boarded a flight at Newark Airport bound for San Francisco. They were businessmen and women, retirees going on vacation, students headed home to school. Ordinary people on what seemed like an everyday flight. But the passengers and crew of United 93 would soon become part of the worst terrorist attack in American history. And their actions that day, banding together to fight the terrorists, would inspire the nation.Our first full report on this incredible story aired in early October 2001. With the country still reeling from the 9/11 attacks, family members introduced us to the heroes of Flight 93. They recounted heartbreaking final phone calls home and the discovery of goodbye messages on answering machines. And they told a story of impossible bravery: how the passengers and crew took a vote and tried to take back the cockpit from the four hijackers in the face of almost certain death.It's been 20 years since United 93 went down in a Pennsylvania field. This past summer we met up with some of those families again. They told us how they remember that awful day and how they've coped with their loss. They also brought us up to date on their lives today, 20 years later. It's a story of remarkable resilience. 

A triple murder divides a small town in Kentucky. As secrets come tumbling out, residents begin to wonder: How well do we really know our neighbors? Keith Morrison reports.

Since James Chambers' disappearance in August 2014, North Carolina detectives and the Chambers family have searched for answers in the murder of the 28-year-old Fayetteville construction worker. Andrea Canning reports.

A man goes overboard on a romantic sunrise cruise with his wife on Lake Coeur d'Alene in Idaho. Investigators begin to think his death may not have been an accident. Insiders close to Lori Isenberg are speaking out for the first time on television after she was convicted earlier this year of murdering her husband Larry Isenberg. The case gained national attention after Isenberg claimed Larry had died in a boat accident. Keith Morrison reports. 

Family members and investigators speak out for the first time since the mysterious death of spiritual leader Amy Carlson, known to her followers as "Mother God." Keith Morrison reports.

After a 27-year-old woman (Egypt Covington) is found murdered in her Michigan home, investigators quickly identify a person of interest, but years pass without an arrest. Andrea Canning reports.

Josh Mankiewicz reports the latest developments following an arrest in the Kristin Smart case; Craig Melvin reports on the mysteries surrounding the powerful Murdaugh family of South Carolina.

Investigators desperately search for a killer after Florida teacher Denise Hallowell is found murdered. Dennis Murphy reports.

New evidence, exclusive interviews, and an in-depth look at Lori Vallow and Chad Daybell, the Idaho couple charged in the murders of Lori's children JJ & Tylee. Keith Morrison reports.

Drew Peterson speaks to Natalie Morales in his first on-camera interview in over a decade about the murder of his ex-wife, Kathleen Savio, and the disappearance of his fourth wife, Stacy.

Insiders close to the Gucci family speaking out for the first time on network TV about the murder of Maurizio Gucci, the former CEO and third-generation scion of the fashion empire. The special will also go inside the investigation that exposed how the family's business was undone by jealousy, backstabbing, and ultimately, an act of murder, for which Maurizio's ex-wife, Patrizia Reggiani, was convicted.

Investigating allegations against fashion mogul Peter Nygard, accused of sex trafficking dozens of women over several decades.

Correspondent Keith Morrison reports on the case of a horror film actress, accused of murder in a real-life plot twist.

Hiker Meredith Emerson goes missing on Georgia's Blood Mountain on New Year's Day 2008. Could her disappearance be linked to two cases with similar circumstances? Dennis Murphy reports.

After Lisa Ziegert is abducted during her evening shift at a gift shop, local detectives, state police and the FBI work relentlessly to find her and solve the case. Andrea Canning reports.

A glimpse of a sobbing woman lighting black candles is seared into a 9-year-old girl's memory. Decades later that girl reveals what she saw, heating up a long-cold case. Keith Morrison reports.

An inside look at the case that made national headlines in December 2019, when a Texas mother was found murdered after she and her newborn daughter disappeared. Andrea Canning reports.

Family members and the lead investigators who cracked the Kelsey Berreth case speak out for the first time and take Andrea Canning inside the murder investigation.

An investigation into the case of two missing Idaho children making national headlines. The trail leads Keith Morrison to Hawaii in search of their mother and her new husband.

When grad student Katie Sepich is murdered, her killer leaves behind his DNA. The Sepich family fights for both justice and to get the law on DNA collection changed. Josh Mankiewicz reports.

Karl Karlsen's wife dies in a house fire. Then his prized horses die in a fire. And his son dies in an apparent accident. How can one man can be so unlucky? Andrea Canning reports.

A fugitive steals millions of dollars by conning numerous women and businesses over 25 years. Will law enforcement finally be able to catch him? Andrea Canning reports.

A coroner arrives at the scene of a car wreck to find a woman dead. He becomes suspicious when he notices unusual markings on her face. Was her death really an accident? Andrea Canning reports.

Three siblings' lives change when their father is taken hostage in an orchestrated abduction. For the first time, they open up to Keith Morrison about their ordeal and its stunning conclusion.

A decades-long quest to find the truth in a young woman's mysterious death ends with a dramatic courtroom decision. The man at the center of it all tells his story to Dennis Murphy.

When Dr. Teresa Sievers is found murdered in her kitchen, detectives struggle to find any leads until an unexpected tip changes everything. Dennis Murphy reports.

A Connecticut bank executive is targeted by criminals who force him to rob his own bank. Dennis Murphy reports.

A former FBI agent is murdered at his house, and as police dig into his past, they begin to think the key to solving the mystery might be quite close to home. Josh Mankiewicz reports.

A college student is found murdered in a residential neighborhood; as police search for the truth, they are stunned to learn that one of their own might be involved.

Exclusive interviews with close family members of Lori Vallow, the Idaho mother charged with deserting her children, Tylee and JJ, who have not been seen since September. Keith Morrison reports.

The story of Rebecca Musser vs. FLDS leader and notorious FBI fugitive Warren Jeffs. Rebecca opens up to Keith Morrison about life in the church and why she decided to leave the denomination.

A tight-knit Long Island family goes to extraordinary lengths to find their missing sister. Andrea Canning reports.

When Bryan Rein, a young Montana veterinarian, is found dead at his home with a gun nearby, police quickly discover there is more to the case than meets the eye. Keith Morrison reports.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided. Keith Morrison reports.

A mother of two who vanishes during a storm turns out to be a victim of something sinister. Dennis Murphy reports.

A man calls 911 after his estranged wife is found unconscious in the bathtub. Soon after the mysterious death, loved ones suspect what happened was no accident. Andrea Canning reports.

Two Tulsa brothers fight for more than 20 years to prove their innocence after they were wrongfully convicted for separate murders.

Almost 40 years after a high school senior was stabbed to death in her car after visiting the mall just before Christmas, investigators identify the killer.

A 19-year-old disappears after a night out with her friends. Months later, when another woman survives a brutal attack, it becomes clear that the two cases are connected. Keith Morrison reports.

After a nursing student vanishes from the hospital parking lot in the middle of her shift, investigators track security footage and her cell phone to get to the truth. Keith Morrison reports.

Police suspect natural causes as they investigate a man's death, until they they uncover a love triangle that turns the tragedy into a tangled mystery. Andrea Canning reports.

International celebrity Oscar Pistorius shoots and kills his girlfriend. When police arrive he says he acted in self-defense, as he believed he was firing at an intruder. Keith Morrison reports.

A suspicious house fire in Ohio sparks an investigation into a supposed suicide 24 years earlier. Josh Mankiewicz reports.

When a Colorado rancher mysteriously disappears, his friends know something isn't right and spend years fighting for answers. Josh Mankiewicz reports.

A young woman survives a brutal attack and detectives work tirelessly to find a suspect. But when they finally do, the victim is convinced they have the wrong man. Keith Morrison reports.

Dennis Murphy has the latest on the case of a Florida law professor murdered in his garage, including new details, newly-released evidence and bombshell testimony from a long-awaited trial.

When a doctor is found murdered, investigators are stumped as to who would want him dead. Police discover simmering jealousies and a love triangle. Andrea Canning has the latest developments.

As detectives investigate a mother of two's sudden disappearance, her friends and family reveal she feared she was being stalked.

An Arkansas realtor goes missing after showing a house. When loved ones later receive mysterious text messages from her, they know something isn't right. Andrea Canning reports.

A 21-year-old college student is found murdered; the case remains cold for nearly forty years until a new detective uses an innovative method to catch her killer.

When a small town Alabama resident is murdered in his home, rumours involving a local pastor begin to swirl as the truth ends up turning the community upside down.

When Leslie Neulander dies suddenly after what appears to be an accidental fall in the shower, two friends join forces to seek justice on her behalf. Andrea Canning reports on the latest twist in the case

After a fight with her mother, Angela, Ellie Green stays with her boyfriend's family until things settle down at home. But when days go by with no word from her mom, Ellie begins to worry. Then she's given the awful news: her mother is dead.

When Ohio resident Pat Sabo is offered $50,000 to kill someone hundreds of miles away, he calls the police to report the incident; acting quickly, investigators set up an elaborate sting

When pediatric dentist Kendra Hatcher is found dead in Dallas, Texas, police uncover a complex plot that leads them on an international manhunt. Keith Morrison reports.

When soldier Vanessa Guillen vanishes from Fort Hood, her family works to bring attention to her disappearance. Vanessa's case inspires a movement across the country. Andrea Canning reports.

After Todd Chance is murdered, police follow a trail of video evidence as they work to track down his killer. Andrea Canning reports.

When police officer Levi Chavez finds his wife, Tera, shot to death in their home, an investigation into her murder begins as buried secrets are revealed. Josh Mankiewicz reports.

A woman is shot to death in her bed while her husband and daughter are home. When police rule out robbery, they are left wondering who would want to kill Jan? Keith Morrison reports.

Soon after 23-year-old Kaylee Sawyer disappears following a night out, an intense multi-state manhunt leads police to find a killer. Keith Morrison reports on the latest updates in the case.

More than two decades since the tragic death of Princess Diana, Dateline reveals new insights into the real story of the very private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family and the investigation into her death. With the rise in popularity of The Crown, Andrea Canning reports on how much of it is true and what was really happening behind the palace gates.

When a hard-charging boss in Arizona is shot to death, police uncover a complex web of bruised egos in his professional life and a trail of broken hearts in his personal life. Josh Mankiewicz reports.

The homicide of private first class soldier and young mother Karlyn Ramirez is investigated.

Kate Snow interviews an undercover agent who spearheaded the international manhunt for former journalist Amanda Lindhout's kidnapper.

An in-depth look at the history of allegations against singer R. Kelly, including interviews with several women who accuse Kelly of misconduct.

A mother of two mysteriously vanishes from her parents' home in Michigan while going to check the mailbox, leaving her phone and identification behind. Police declare her dead before they even find her body. The disappearance and complicated investigation takes years for detectives to unravel.

A look at O.J. Simpson's infamous Bronco car chase and subsequent standoff with the LAPD SWAT team. Included: deposition tapes from Simpson's civil case; audio from a cell phone inside the Bronco; and remarks from then-LAPD homicide detective Tom Lange, then-LAPD commander David Gascon and then-SWAT sergeant Mike Albanese, as well as Nicole Brown Simpson's friend Kris Jenner, former prosecutor Marcia Clark, and photojournalist Roger Sandler, who was inside Simpson's estate.

Lead detectives and family members speak about the case of teenager Michelle Carter, who was convicted of bullying her then-boyfriend to kill himself.

NBC News' Dennis Murphy speaks to a Georgia father accused of murdering his ex-wife. While his friends come together to prove he is innocent, prosecutors count on his young children to testify against their own father.

The case of Mike Williams, who disappeared after duck hunting in North Florida on his sixth wedding anniversary, is examined.

Police are puzzled when a woman vanishes without a trace from inside her home in Washington, D.C. Adding to the mystery is that her security cameras don't show her leaving. As investigators begin to search for answers, they discover a connection to a decades-long disappearance of another woman.

The case of Patrick Frazee, who is accused of murdering his fiancée Kelsey Berreth in November 2018, is examined. Included: remarks from Frazee's former girlfriend Vanessa Curie and her mother, Georgia.

Key players in the case of Rod Covlin, a New York man found guilty of murdering his wife for her $5.3 million fortune and attempting to frame his then-teenage daughter, share their stories.

A young woman finds out that her boyfriend might have shot and killed a college football player out of revenge. She struggles with coming forward to officials, fearing she could lose her life. Keith Morrison reports.

When Ohio mother Heather Bogle goes missing, a detective identifies multiple suspects, until he himself comes under scrutiny for his investigation. Josh Mankiewicz reports, and interviews Bogle's family, and four potential suspects in the early stages of the investigation, including her brother and ex-girlfriend.

Two young girls in Washington are snatched in broad daylight while riding their bikes. The case goes unsolved for decades, until a new detective with a local connection to the story tries to solve the mystery that haunted her childhood.

When a young woman fails to show up to work, her mother rushes to her home to try to find her. What she discovers begins an investigation that leads to a suspect no one imagined.

An Alabama teen's father calls the police after he returns home to find his son had thrown a party, leaving the place trashed. Just 11 minutes after the deputy leaves their house, there is another 911 call placed.

A mother in Pennsylvania disappears one afternoon after she is last seen by her co-workers leaving for lunch. The case remains cold even after 60 investigators try to crack it. Could the 61st detective finally have the answers? Josh Mankiewicz reports

A Connecticut bank executive is targeted by a crew of criminals who invade his home, take him and his mother hostage and order him to rob his own bank. 

When a dancer is murdered in her Virginia home, investigators are hopeful they can crack the case. But after interviewing a series of suspects, detectives realize the case is much more complicated than previously thought.

The discovery of a 19-year-old's car abandoned on a bridge in New Jersey turns into a missing person case that evolves into a monthslong homicide investigation; police discover a plot involving money, close friends and a fatal betrayal.

The latest in the case of a missing young Oregon woman, whose disappearance led to an intense manhunt, after a suspect embarked on a two-state crime spree

The murder of a young schoolteacher in Pennsylvania goes unsolved for years, but investigators discover a new tool that may finally help unlock the murderer's identity.

Two young women are shot and left for dead on a beach in Texas; a man is eventually convicted, but a stunning twist raises doubt.

After a studious University of Utah athlete is found murdered on campus, it is revealed that she had reached out to the campus police for help multiple times before her death.

Shirley Carter is gunned down in her kitchen in in rural Iowa. Dennis Murphy reports on the major developments in the case, and the family feud that led to a murder trial.

A successful business woman and mother of three is found shot in her office. Will justice be served? Keith Morrison reports.

A missing mother in Florida leaves behind a three-year-old son, whose memory of their last night together offers some clues as to what happened to her. Dennis Murphy reports.

College senior Reagan Tokes was just months away from graduation when she was shot and killed in a public park. Her parents' heartbreak soon turned to outrage. Andrea Canning reports.

When a Kentucky man is convicted of murdering his co-worker, it appears the mystery is solved until a stunning disclosure years later turns the closed case upside-down. Josh Mankiewicz reports.

A mother has suspicions about the sudden death of her son in college, which was ruled an accidental overdose.

A 59-year-old father is found dead in his home, they assume it's related to his ongoing health issues. But then, the coroner reveals he didn't die of natural causes. Keith

Cornell student and star athlete Charlie Tan excels in everything. But when he gets caught in the middle of a murder investigation, the community is left in shock.

A San Diego woman arrives at an emergency room, near death. Doctors, the FBI and local law enforcement must solve not only a medical mystery, but also a horrific crime. Natalie Morales reports.

Pamela Smart was television's first true crime fascination after her husband was found murdered. Police discovered that Pamela Smart was keeping a big secret.

When a college student is found dead after a party, his mother is determined to try to find out what happened. Dennis Murphy reports on the unexpected twist that no one saw coming.

A wife calls 911 to report her husband has been shot on a country road in Texas. Could the dramatic police footage from the scene end up being key in the investigation? Josh Mankiewicz reports.

Video of Robert Durst's friends testifying for the prosecution as to why he might have killed his best friend; a close friend of Durst's opens up about being called to testify against Durst after years of supporting him.

Recently uncovered pages from the diary of John Hinckley Jr, written after his arrest for the attempted assassination of President Ronald Reagan, are revealed. Troy Roberts reports.

Lester Holt spends two nights embedded inside the largest maximum security prison in America, the notorious Louisiana State Penitentiary, also known as Angola.

Interviews with people close to missing Connecticut mom Jennifer Dulos, including her estranged husband, who has since been arrested in connection with her disappearance.

The search for MacKenzie Lueck, a college student who vanished from a park in Salt Lake City.

Virginia Roberts Giuffre and other women share their accounts of sexual abuse by Jeffrey Epstein and others.

The murder of a woman sets off a chain of events, leaving one man dead, another man implicated and a diabolical scheme exposed.

Nearly 10 years after Utah mother Susan Powell vanished, private journals, home videos and emails shed new light on what happened to her. Keith Morrison reports.

A double homicide in upstate New York leads detectives on a cross country investigation to piece together a case with a surprising suspect at the center. Dennis Murphy reports.

The murder of a young businessman in Old San Juan, Puerto Rico, marks the start of a 15-year-long hunt to find the killer.

Years after a Montana man is found dead, his son opens up a box of case files to find out what really happened.

A woman is found murdered after her close friend hears her screaming on the phone; the mysterious death of her boyfriend's twin brother leads investigators to a suspect.

A California woman's two former husbands are mysteriously murdered, nearly 20 years apart.

When a Pennsylvania man who was convinced his messy divorce put a target on his back is found stabbed to death, his friends and family realize he was right all along in predicting his own gruesome murder.

More than two decades after a woman is murdered in what appears to be a burglary gone wrong, a detective finds information that unlocks the mystery of what actually happened.

Melissa Oxley wakes up to find her husband, Ben Oxley, has been shot in the head.

The man convicted of murdering California entrepreneur Chris Smith speaks out.

When Tina Sandoval disappears, her parents and loved ones spend years searching for her; a secret she was keeping may lead to clues about what happened to her.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

A couple's anniversary celebration ends in murder during what appears to have been a home invasion, but investigators believe the suspect might be connected to the victim.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

A murder outside Pleasantville, Iowa divides a family and forces one man to take the investigation into his own hands. Dennis Murphy reports.

When a young mother disappears after leaving her infant in the care of her local pastor and his wife, Florida detectives search for her for five years, uncovering a web of secrets and lies.

When a young Army medic goes missing, police get help from an unorthodox private investigator.

A former marine who may have let his desire to help go too far.

A woman's death is initially ruled a suicide, but when a new investigation begins, police begin to suspect murder.

A complicated Texas love triangle ends in murder. Apink gun leads to an arrest, until new evidence prompts investigators to rethink the case.

Former DEA agent Andrew Hogan details his search for Mexican drug lord Joaquín "El Chapo" Guzmán.

When a young Florida law professor is shot, baffling his family, friends and police, a complicated investigation leads police to a surprising theory of the crime; the victim's family speaks out for the first time.

Four families that barely escaped the catastrophic Montecito, Calif., mudslides alive, and the rescuers who risked their own lives to help.

Dennis Murphy on the latest developments in a bizarre cyber-revenge case that lands a young woman in jail. Andrea Canning reports on a murdered Tennessee woman whose case stumps investigators

Former gymnastics team coordinators Bela and Martha Karolyi and Olympic gold medalist McKayla Maroney talk exclusively to Savannah Guthrie about the biggest sex abuse scandal in Olympic history.

The disappearance of a young woman from Bend, Oregon leads to an intense manhunt after the suspect sets off on a two state crime spree. Keith Morrison reports.

When one woman breaks off her relationship with a boyfriend she says abused and stalked her, he moves on to something even worse.

After a 15-year-old girl disappears, investigators discover a creek where the local teenagers hang out that may hold the answer to her disappearance.

Rapper Meek Mill interview; exploring controversies surrounding the criminal justice system, including the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse and more.

When a young woman is found dead in a field on the outskirts of Green Bay, Wis., a fitness tracker helps detectives solve the mystery.

In a suburb of Toronto, a family lives in fear as one relative after another is found dead over the years in the same house.

A look at the future of marijuana in the United States, including state-of-the-art science and interviews with patients, their families, leading scientists, doctors, federal legislators and a former professional football player.

Interview with Andrea Constand, the first woman to pursue charges against Bill Cosby, and four other Cosby accusers who testified against him.

Sixteen parents fighting to end college hazing at fraternities speak out together for the first time; cases of alleged hazing at various universities.

A recent law school graduate in Georgia who has a promising future disappears without a trace.

A father in Hawaii tackles setback after setback in his fight for justice for his murdered daughter.

A woman's DNA test sends her father halfway around the world to confront his past.

When a prominent attorney claims to have accidentally shot his wealthy wife, the local prosecutor questions his story.

The reality of life along the U.S.-Mexico border, including interviews with families seeking asylum, news on the controversial policy of separating migrant families, and fact checks on claims made by both political parties.

A woman whose ex-husband killed six people in Arizona, allegedly targeting individuals with connections to their divorce; interviews with experts on the topics of domestic violence and mass murder.

A husband convicted of murdering his wife is granted parole; others fear he may kill again.

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

A popular high school student is found murdered in her bed; two students help police solve the case.

When two mothers meet after one of their sons disappears after a college party, their search for answers leads them down an unexpected path.

A beloved former firefighter is found dead in his garage; a neighbor's home security camera may provide answers.

Former actress Catherine Oxenberg shares how she tried to save her daughter from controversial self-help group NXIVM; interview with cult deprogramming expert Rick Alan Ross.

Stories from the streets of Hollywood, including an interview with producer Jason Blum about how he is revamping the horror genre; Jamie Lee Curtis, Jordan Peele and Octavia Spencer discuss what it is like to work with Blum.

A murder case considered closed by North Dakota detectives is suddenly reopened when a confidential informant comes forward with a tip about an unlikely suspect.

In-depth look at the growing homeless epidemic affecting half a million Americans, including an eye-opening tour of L.A.'s Skid Row, the nation's epicenter of homelessness. Craig Melvin reports.

After being severely beaten in her own home, a high school girl goes under hypnosis to try to identify her attacker.

When a soldier who just returned from Afghanistan is gunned down on the side of the road in Kentucky; detectives quickly uncover a secret that could solve the case.

Keith Morrison reports on a notorious serial killer, nicknamed Hannibal, who murdered several people while working as a confidential informant for the FBI.

Andrea Canning reports on a young, beloved woman who is found dead near a soccer field in Indiana. Detectives try to piece together a puzzle that leads them to the most unexpected of suspects.

When a beloved teacher and former beauty queen goes missing in Georgia, it triggers a decade-long investigation that makes national headlines. Andrea Canning reports

A pilot flees after a deadly plane crash, and becomes a fugitive living a double life for decades. He tells his story for the first time to Keith Morrison.

The sister of a man who died after robbing a bank when a bomb that was placed around his neck detonated talks about the case.Dennis Murphy takes a comprehensive look at the pizza bombing case, which Dateline has reported on for more than a decade, and the bizarre criminal activity surrounding the case.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story. Keith Morrison reports.

The parents of missing South Carolina woman Heather Elvis, Debbi and Terry Elvis, open up to NBC News' Andrea Canning about the search for their daughter.

When two tragic deaths occur within one week of each other in a wealthy area in California, families begin to wonder what happened inside a beachfront mansion. Josh Mankiewicz reports.

A mother's death initially appears to be a suicide, but when investigators start to interview those closest to her, an evil plot emerges. Dennis Murphy reports

President Barack Obama discusses how he feels he delivered on the promises he made at the start of his time in office and his hope for the nation going forward.

A man convicted of murdering a woman in her upscale Austin, Texas, home tells his story for the first time.

The FBI gets involved when a Virginia man's wife and son are kidnapped while vacationing in the Philippines, with a terrorist group demanding millions in ransom.

A relative and a friend of Ross Harris -- who forgot his 22-month-old son in a hot car for hours -- speak out about the case.

Celebrating journalist Tom Brokaw's 50-year career; highlights, famous interviews, never-before-seen moments and new conversations with guests -- including Oprah Winfrey, Bill Gates, Tom Hanks, Jon Stewart, Lin-Manuel Miranda, Colin Powell and more.

Against all odds, a young woman is found alive after an attack on her and a friend near Corpus Christi, Texas.

When two women are murdered five years apart in different states, a private investigator looks for connections between the two cases.

Co-lead investigator in the Steven Avery case Tom Fassbender discusses the case and allegations investigators coerced Avery's nephew, Brendan Dassey, into making a false confession.

Michelle Hadley is exonerated after spending three months in jail for attempted forcible rape of her ex-fiance's wife.

Police investigate whether the murder of a South Florida attorney is connected to a web of fraud, betrayal and more than $1 billion in missing money.

A tight-knit Long Island family go to extraordinary lengths to find their missing sister.

Two double homicides committed five years apart lead police to suspect a serial killer is responsible.

When a former hockey player discovers his wife murdered in their home, his daughter says she saw a burglar.

When a 23-year-old woman goes missing from a shopping mall in Plano, Texas, her family searches for her, while the police seek out who is responsible for her disappearance.

The investigation into the disappearance of a mother of three in Colorado reveals she was living a double life.

Michael Peterson, who was granted a new trial after the 2003 conviction in the murder of his wife was overturned, discusses the case and his decision to enter an Alford plea.

After a young mom is found dead on the side of a country road, 40 miles from her Knoxville home, investigators scramble to figure out how she ended up there.

A detective comes face to face with a serial killer when she promises to get justice for the mother of a victim whose body turns up at an Anaheim trash facility.

A look at the 2004 murder of pregnant California woman Laci Peterson, including previously unseen interrogation footage of her husband, Scott, who was convicted of the crime.

A look back at the 1997 murder of fashion designer Gianni Versace, including interviews with his long-time partner Antonio D'Amico, model Beverly Johnson, fashion journalist Hal Rubenstein, author Maureen Orth and more.

Princess Diana's troubled marriage, life in the monarchy, love affairs and tragic death; interviews with former bodyguard Ken Warfe, Paris police chief Martine Monteil, forensic scientist Patrick Touron, former French diplomat Sami Nair, and others.

When Cara Ryan shoots her ex-husband and accuses him of threatening to kill her, police question her motive.

A woman comes forward with the truth about the deaths of three other women, solving a 17-year-old mystery; interviews with two people at the center of the case.

When a mother of three mysteriously disappears, the only clue is her abandoned vehicle on a lonely Montana highway.

The murder of a woman in Saco, Maine, leads police to a complex investigation that spans three states.

First responders are met with horror when they discover a young woman's body in the basement of her home in western Massachusetts.

When a man in San Antonio shoots his wife in the dark of the early morning, he says he mistook her for an intruder.

Police investigate whether the shooting of a young woman in Utah was an accident or something more sinister.

A woman continues searching for answers after the investigation into her daughter's murder goes cold.

When a fire is set to cover a murderer's tracks in Bergen County, N.J., for the third time in a year, authorities suspect a serial killer may be on the loose.

The battle between a wife and a mistress for the heart of one man leads to a deadly car chase. Andrea Canning reports.

An unexpected revelation may change the fate of the man convicted in the case of a young woman found dead in the Kentucky warehouse where she worked.

An in-depth interview with Charles Manson's former parole officer; rarely seen video of Manson; interviews with victims' family members, and others close to the case.

When a beloved firefighter is murdered just outside Sarasota, Fla., investigators discover a twisted tale of secrets, lies and infidelity. Andrea Canning reports.

When college student Mickey Shunick vanishes, her sister becomes the driving force in a multinational search effort.

Kate Snow speaks with two families about their unforgettable stories of surviving the 2013 Westgate Mall terrorist attack in Kenya.

A former hockey player discovers his wife murdered in their own home. His young daughter says she saw a robber, but the killer's true identity turns out to be far more complicated. Andrea Canning reports.

A luxury car salesman is asked by a beautiful former client to plan a murder.

When film executive Gavin Smith vanishes, Los Angeles detectives search for clues amid reported sightings and suspicious circumstances.

When a father goes missing and his body is found in a field several miles away, the investigation reveals multiple suspects -- including members of his own family.

A love triangle leads to years of stalking, property destruction, threats, and murder.

When a mother of four dies unexpectedly on Valentine's Day, her death is attributed to natural causes, but a detective suspects that someone murdered the woman.

When a model and up-and-coming YouTube celebrity turns up dead, police question her husband in the hope he can shed some light on the situation.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

A community comes together to search for a young woman who goes missing from a Halloween party.

A young father's murder at work leads investigators to deep secrets about sex, friendship, religion and family.

Author Rachel Jeffs talks about what it was like to grow up as the daughter of the self-proclaimed prophet of the Fundamentalist Church of Jesus Christ of Latter-Day Saints, Warren Jeffs.

An investigation of a woman found murdered in Fort Worth, Texas.

A comprehensive look at the 1989 murders of José and Kitty Menendez by their sons, Lyle and Erik; featuring interviews with key players in the case, including Lyle Menendez.

An anonymous letter leads authorities investigating the poisoning death of a chiropractor to an unlikely suspect.

When a young, handsome veterinarian is found dead in his home in Montana, the mystery remains unsolved for nearly two decades.

Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

Stacy and Jason Bingham discuss their five children's health issues as one child undergoes a second heart transplant and another's child's heart begins to fail.

Stories from the people who were egregiously harmed by the actions of Michigan oncologist Farid Fata, who pleaded guilty to fraud, conspiracy and money laundering; how Fata's lies were exposed.

The 2015 retrial of Russell Faria, who was convicted years earlier for murdering his wife, reveals surprising new allegations.

Now exonerated, Eric Glisson discusses the 18 years he spent in prison for a murder he did not commit.

The controversial conviction of Steven Avery -- who was previously exonerated after spending 18 years in prison for a sexual assault he did not commit -- in the murder case of Teresa Halbach.

The latest updates on Ryan Ferguson, who spent nearly 10 years in prison for a murder he did not commit.

The investigation into the death of a Florida firefighter reveals a tale of secrets, lies and infidelity.

Years after a 16-year-old boy confessed to a double murder and was sentenced to life in prison, a local businessman tries to prove the confession was coerced and the teen was wrongfully convicted.

As detectives struggle to find leads in the murder of a college student, the perpetrator strikes again.

Robert Davis, who was convicted of murdering a woman and her son, claims his confession was coerced and tries to prove he is innocent.

The mystery of a Florida hotel owner's disappearance confounds family, friends and the detectives investigating the case.

The drug-related death of a 17-year-old girl sheds light on a new class of synthetic drugs that has law enforcement agencies on alert.

Detectives suspect an inside job when a coin collector and his wife are found dead in their home with no sign of forced entry or evidence of theft.

Rocky Mountain National Park rangers question whether a woman's fatal fall was an accident or the result of an act of violence.

Police investigate the disappearance of a woman from a small Michigan town.

An investigation into the murder of a beloved couple in South Carolina reveals a feud and divides a family.

Prosecutor Marcia Clark reveals details about the trial of O.J. Simpson; interviews include Kris Jenner, Denise Brown, Fred Goldman, Kim Goldman, Kato Kaelin, Skip Junis, and Bob Costas.

The discovery of an Army captain's death in her El Paso, Texas, home shakes her tight-knit military community.

Keith Morrison reports on a Chicago woman from a large family missing for several days. As the whole city joins in the search, detectives begin to suspect that a man in her life has many secrets.

Daughters Alexis and Rachel share fond memories of their mother with Keith Morrison.

After a woman reports a prowler, police find her Olympic bronze medalist husband dead in their backyard.

Dennis Murphy reports on the case of a 26 year-old model and aspiring Playboy Playmate who goes missing after visiting a Miami nightclub with her boyfriend. Within 24 hours of her disappearance, police find her brutally murdered.

After a Idaho woman falls in love with her married boss, the affair leads to a violent confrontation. Keith Morrison reports.

"What happened one cold January night in the wee hours was especially alarming..." Dennis Murphy reports on a house fire that breaks out in the middle of the night in Kentucky. When Julie Griffith is found dead amongst the rubble, investigators soon discover the fire was anything but an accident.

In small-town Colorado, a sudden marriage sows tension in two families. Then a murder uncovers secrets, lies, and a mystery that had been buried for years.

The vanishing of a female Realtor from Little Rock, Ark., leads detectives on a desperate chase.

The life and legacy of legendary songwriter, producer, singer and musician Prince; music legends who have recently passed.

Dark secrets come to light as officials investigate what happened to a wife and mother of three who was found dead in her bathtub.

A teenage girl is murdered at a scenic spot on a Utah river. The case almost goes cold until a hairdresser turned detective, with the help of the victim's determined mom, finds the truth.

The notorious hacker, Marcel Lehel Lazar (also known as "Guccifer"), who discovered Hillary Clinton's private email account; giant chimpanzees threatened by poachers; new insight into recovery from traumatic brain injuries.

Police in a small Texas town believe a man may be behind the shooting deaths of his wife and her son in their home.

When a young, handsome veterinarian is found dead in his home in Montana, the mystery remains unsolved for nearly two decades.

When a young woman is found dead inside her Jacksonville Beach apartment, police hope they'll quickly find her killer. Instead, it takes more than a year to find a microscopic clue and a huge stroke of luck to solve their case.

Even in a peaceful place, like just south of Glacier National Park in Montana, tempers can flare and personalities will clash. One man shoots, another dies…but the story can't be that cut and dry, can it?

A look at the crimes committed by Charles Manson and his followers in 1969, including archival footage and interviews with those close to the events.

Radio host Robert F. Kennedy Jr. talks about the 1975 murder of Martha Moxley, for which his cousin, Michael Skakel, served 11 years in prison before his conviction was vacated.

Montana, 1999: Kathryn Laird, the wife of an attorney, is found drowned. A strong swimmer, Kathryn's family immediately doubts the apparent suicide.

People involved in the investigation of the 1996 murder of 6-year-old JonBenét Ramsey discuss the case; case documents made public for the first time; footage of the police interview with JonBenét's brother.

The investigation into the death of an entrepreneur reveals secrets he had been hiding and a list of people who might want him dead.

A man convicted of murdering a woman in her upscale Austin, Texas, home tells his story for the first time.

A man who was recently acquitted of the murder of his ex-girlfriend's 12-year-old son tells his story; interview with the victim's mother and key players in the case.

A daughter's determination to learn more about her mother's mysterious death leads to the re-opening of a 30-year-old cold case.

The investigation into the death of Spokane, Wash., businessman exposes a web of malevolence extending from the Pacific Northwest to a North Dakota oil field.

A son uncovers a dark family conspiracy when he questions his mother following a man's apparent suicide.

A Jacksonville, Fla., firefighter discovers a disturbingly violent scene in his darkened bedroom on a Halloween weekend.

Police initially suspect natural causes as they investigate a man's death, until they learn about an unconventional love triangle, which points the investigation in a new direction.

A son enlists the help of his attorney father after he watches a "Dateline NBC" report on the murder of Michelle O'Keefe. They soon discover disturbing questions. Keith Morrison reports.

After a man's conviction for murdering his wife is overturned, new allegations take the tale in an unexpected direction.

The investigation into the disappearance of a Marine's 19-year-old wife reveals a secret love triangle and multiple suspects.

The investigation into the death of a woman whose remains were found in her Frisco, Texas, garage leads detectives to a series of suspects with connections to the victim's complicated and secretive life.

A man's children stand by him as he deals with courts in upstate New York; a woman accused to attempting to hire a hit man to kill her husband.

Stacey Schoeck, the Snellville, Georgia, wife and mother who hired a hit man to kill her husband on Valentine's Day

When Diane Kyne is found dead in her bedroom, competing stories emerge about which of the two most important men in her life may have killed her. One of the stories must be true – but which one? Dennis Murphy reports.

s23e49

Cathy Torrez was a beautiful, smart and responsible 20-year-old student. So why didn't she come home after work like she was supposed to?

An arrest is finally made five years after a mother of four disappeared while she was close to her apartment in Montana.

Authorities take two years and three trials to solve the shooting death of the wife of an FBI agent in the kitchen of her family's Virginia home.

When a woman returns two days after being reported abducted, authorities believe it's a hoax until a similar crime forces them to take another look; twenty-seven women who have accused Bill Cosby of assault get together to share their stories.

Daniel Villegas, 16, confesses to a double murder in El Paso, Texas, and is sentenced to life in prison. When a local businessman hears of the case 10 years later, his investigation leads him to believe the teen was coerced into a confession and wrongfully convicted.

The case of Johnny Hincapie, whose conviction for the 1990 murder of a Utah tourist in New York -- a case that represented a tipping point in the city's law enforcement -- was overturned after 25 years; a 29-year-old woman goes missing.

Natalie Morales speaks to the mother of the teenage sexual assault victim from St. Paul's School; new details from both sides of the case, Owen Labrie's conviction and sentencing, and interviews with Labrie's friends and legal team.

Natalie Morales speaks to the mother of the teenage sexual assault victim from St. Paul's School; new details from both sides of the case, Owen Labrie's conviction and sentencing, and interviews with Labrie's friends and legal team.

When detectives track down the killer of a Las Vegas cocktail waitress and mother, it becomes clear that the investigation has just begun.

Full coverage of the series of shootings and bombings across Paris

A model with a checkered past goes under cover to reveal the truth about a cold case involving a romantic getaway on a boat that ended with a woman being lost at sea.

The five-year investigation into the death of a retired corrections officer, who was killed by antifreeze poisoning, reveals multiple suspects.

The five-year investigation into the death of a retired corrections officer, who was killed by antifreeze poisoning, reveals multiple suspects.

When a California nursing student disappears during her hospital shift, her family works to locate her.

When a scientist is murdered in his home, detectives try to figure out why his wife and son were left unharmed.

When actress Aasha Davis and her sister Lesley move to Hollywood, things appear to be going well. But just as Aasha's star is rising, Lesley suddenly vanishes. Josh Mankiewicz reports.

When an unimaginable accident traps a mother and her young daughters inside a totaled car, the rescue effort becomes too dangerous to continue. Keith Morrison reports.

This is a rebroadcast from the original air date of 2-11-2011In February 2012 Stephanie Lazarus goes on trial for first degree murder. The case hinges on a DNA sample more than two decades old.