20/20

A wealthy grandmother goes on trial accused in the murder-for-hire of a family member.

A detective stops at nothing – donning disguises, going undercover, employing cutting-edge forensics – to solve the murders of two young women.

From Mr. Right to most wanted: Investigators uncover the double life of an international fugitive.

A teen musician is murdered in her home, another young woman is brutally attacked nearby and the link that helped police catch the killer.

A mother's unwavering crusade for justice after her daughter's murder and the hidden clue that helped catch a killer living in plain sight.

A burned-out car, one victim inside, and a married couple are both missing. Police are left to untangle what happened as they search for answers and a possible killer.

After a young mom is found murdered, seemingly at the hands of a home intruder, investigators uncover a far more intricate plot than the initial evidence suggested.

Four teen girls are found murdered in a Texas yogurt shop. Decades later, DNA evidence and advanced forensics reveal a suspected serial killer.

When a college football player destined for the NFL is murdered, his mother questions whether police have done enough to solve the case. 20/20 and ESPN investigate.

A wedding weekend turns into a real-life whodunit when the vacation rental's host vanishes overnight.

The shocking story of Utah mom Kouri Richins, accused of poisoning her husband and then writing a children's book about grief. The verdict is in. Her closest friend and a jury foreperson speak out.

A woman shoots her neighbor, killing the mother and sparking national outrage. Exclusive "20/20" interviews and body camera video document the bitter feud and its aftermath.

Robert Doerr was a 28-year veteran of the Evansville Fire Department in Indiana. One evening, after returning home from a 12-hour shift, he was shot in his driveway. Police were baffled until a slip of paper hidden inside a condolence card was discovered. The investigation became a family drama, leading a son to turn against his father. Now, in an all-new "20/20," ABC News correspondent John Quiñones reports on what authorities say was a twisted murder plot driven by greed, sex and allegations of an illicit affair. Exclusive interviews with the family and witnesses, along with the body camera footage that captured the vital moments after the firefighter was gunned down as police arrive on the scene on.

When a teenager suddenly vanishes while home on college break, his sister sifts through texts and social media to help crack the case.

When a surprising discovery in the backyard of a family home leads police to a husband and father's killer.

A famed real estate developer is murdered in his car by a remote-controlled pipe bomb.  Money, lies and revenge are the motivations, with evidence leading authorities on an international search to find the killers responsible.

A loving husband is found murdered in his home. Weeks later, his wife receives a chilling death threat on her doorstep. Investigators are left to unravel a web of dark secrets dating back decades.

When an insurance agent is murdered in his office, evidence points to a secret relationship — until new DNA technology helps authorities find the real killer.

A young couple is living a lavish lifestyle in rural West Virginia. When a con unravels their close-knit community, foul play leads to murder.  Authorities begin the hunt for a killer.

Gabby Petito's parents, in their first network TV interview together, share new information about their daughter's tragic disappearance and death, never-before-seen videos of her van life, and what her newly discovered text messages reveal.

A mother plunges from a cliff in a fatal fall while hiking on her anniversary. For the first time, her daughter speaks out.  

David Muir reports on "The Code Breakers." After two young women are murdered, their cases go cold for decades until police turn to cutting-edge forensic technology to catch the unlikely killers in both cases.

It's a harrowing tale of horror and homicide near Bozeman, Montana, when an intruder enters the home of three women and shoots two at close range, leaving one dead and the other barely clinging to life. Police quickly make an arrest but then release the person. Who could have committed this heinous crime? 

Matt Baker was a charismatic minister of a small church in Hewitt, Texas, just outside Waco. To his congregation, it looked like he had it all. Married to Kari, a Sunday school teacher, the couple seemed to have a happy and loving marriage and two young daughters, but when Kari was found dead, the carefully crafted facade Matt created soon started to unravel. 

A family drama unfolds when a multimillionaire father and his daughter both die under mysterious circumstances. A trail of greed and heartless brutality leads to an unlikely suspect.

An A-list celebrity hairstylist is found brutally murdered at his home. What begins as a suspected burglary slowly unravels into something far more personal. As the jury reaches a verdict in the high-profile murder case of the wife of celebrity hairstylist Fabio Sementilli, "20/20" is in the courtroom. 

When a lottery winner vanishes under mysterious circumstances, police begin an investigation, and there is no shortage of possible suspects.

Music, a bicycle and rose petals are clues to catch the killer of a South Carolina mom.

A mother's unrelenting crusade to find justice after her 21-year-old daughter is fatally stabbed in the hallway outside her apartment.

The woman who pled guilty to one of the most elaborate hoaxes ever now shares a different version of her story; her ex-husband speaks out after he and the world were conned.

When a married couple goes missing over a Fourth of July holiday weekend, a social media clue leads to a shocking discovery.

Bonnie Woodward was a 47-year-old mother of four who disappeared after her shift at a nursing home in Alton, Illinois. Known for her routine of checking in with loved ones, Bonnie's family became immediately concerned when they didn't hear from her. Soon after, her red truck was found abandoned, and multiple witnesses reported seeing Bonnie get into a silver Chevrolet with an unknown man. Suspicion fell on Bonnie's 18-year-old stepdaughter, Heather, who, in a bizarre twist of events, had recently run away from home, but she was cleared by authorities, and no solid leads emerged regarding Bonnie's whereabouts.

A killer puts a complex scheme into play after murdering a college student; a new investigation unearths the lengths taken to bury the truth.

New details uncovered about the crime, evidence and shocking guilty plea in the Idaho College murders.

When DNA evidence collected from an airport sting operation breaks open a cold murder case, authorities are led straight to a killer.

Exclusive interviews and new evidence in the shocking case of a Colorado dentist convicted of murdering his wife by poisoning her protein shakes.

A family is stalked, leading to the murder of a mom. Dramatic body camera video captures the unfolding investigation.

An entire family seemingly vanishes into thin air, igniting an investigation and search for answers.

Authorities race against time to find a kidnapped mom by tracing chilling 911 calls, including one from the victim herself.

After a dad of four vanishes, an investigation involving a body transporter and deputy coroner uncovers an outrageous murder plot.

Two key witnesses now say they lied about the murder of a young mother. Could this free a convicted killer?

Murder, power, and deception unravel in the Murdaugh family saga and the new Hulu miniseries exploring their downfall.

When a dedicated Army nurse disappears, her father begins his own desperate search. Investigators discover a complex web of jealousy, violence and a Marine harboring dark secrets.

A college student is murdered at home; investigators uncover evidence from a string of sexual assaults; a survivor who helped authorities catch the killer speaks out for the first time.

A beloved hairstylist vanishes without a trace, launching a multistate investigation that ultimately uncovers a chilling trail of deception.

After a mom is killed outside her workplace, real-time surveillance video helps detectives uncover clues leading to a suspect whose own confession suggests a possible mastermind still at large.

A star cyclist is gunned down by a friend's jealous girlfriend, and the international chase to find the suspect.

A North Dakota student is abducted after shopping at the mall; inside the hunt to catch a killer before he kills again.

When a woman is found murdered, a written confession gives insight into the mind of her killer.

Gypsy-Rose Blanchard's story of murder, family, romance, deception and abuse; her first interview after her release from prison.

An attempted kidnapping leads police to a killer.

Conspiracy, escorts, and murder-for-hire. An exclusive inside look at the undercover investigation.

A U.S. Army Sergeant is murdered; investigators uncover a heartless plot of adultery and greed.

A mysterious brutal murder and the bizarre home renovation that may have been the motive.

A Florida university campus is on edge when a student disappears. Police say love, lies and obsession led to murder.

A mom who would stop at nothing to find her daughter after she vanished, and the team of investigators who solved the deadly mystery.

When four young women go missing, police hunt for a serial killer roaming the interstate. John Quiñones takes us into the families' quests for answers.

Ruby Franke, a popular YouTuber, sees her world implodes after her emaciated son escapes.

When a young couple is found dead, police learn they were involved in an online feud and uncover a deadly catfishing scheme.

A teen girl vanishes after getting into an unknown vehicle. When the truth of her disappearance comes to light, the community is shocked by who is behind the violent plot.

It seemed like life in the small town of Selmer, Tennessee, revolved around the well-known and beloved church pastor Matthew Winkler. Matthew, along with his wife Mary and their three daughters, were seen as a perfect family — until parishioners discovered their pastor's body in the family's home, and Mary and the daughters were nowhere to be found.

When Tricia Todd, a young mother who recently relocated to Hobe Sound, Florida, failed to pick up her 2-year-old daughter from the babysitter, her family was instantly worried. Police conducted an extensive search, questioning a pastor who twice met Tricia during her evening walks on the beach, a local ventriloquist whom she was infatuated with, and her ex-husband Steven Williams. But when those leads seemed to go nowhere, authorities were left wondering— who would want a young mother dead?

The last time anyone heard from Tracie Hawlett and J.B. Beasley, two teenagers on the verge of their senior year in high school, was on a sweltering July night in 1999. Tracie called her mother from a payphone to say they were on the way home from celebrating J.B.'s birthday — but the two never made it home. The girls' bodies were discovered in the trunk of J.B.'s car, less than a mile from the payphone, with gunshot wounds to their heads. Despite exhaustive efforts, including attempts to identify unknown male DNA found on one of the girls, the involvement of multiple agencies, national TV appeals, and even attempts at hypnosis of eyewitnesses, the case eventually went cold. In 2019, the use of genetic genealogy led to a breakthrough, resulting in a shocking arrest. Could they have finally found the killer?

In 2016, Fabio "Big Daddy" Sementilli was a beloved and sought-after hairstylist with a client roster that included Jennifer Lopez, Russell Crowe, Jackie Chan, Jennifer Love Hewitt and more. When Sementilli was discovered lying lifeless on his family's pool deck with multiple stab wounds to his neck and back, his family, friends and the hair-care industry were devastated. Initially, police suspected he had been a victim of a burglary gone wrong — until DNA found in his car led them to an unlikely suspect, who had attended Sementelli's memorial service sporting an injury.

In 2011, a witness last saw 20-year-old nursing student Holly Bobo walking into the Tennessee woods with an unknown man. Three years later, authorities found her remains miles from her home. After the largest and most expensive investigation in the Tennessee Bureau of Investigation's (TBI) history, authorities ultimately charged Zach Adams, Dylan Adams and Jason Autry with the kidnapping and murder of Holly. Although there was little physical evidence and no DNA linking any of the men to the crime, a jury convicted Zach at trial — based mainly on Jason's testimony, in which he stated that he had been present when Zach shot and killed Holly. Dylan Adams and Jason Autry both eventually pleaded guilty to lesser charges. Earlier this year, Jason recanted his testimony, saying he made it all up, and while prosecutors stand by the conviction, lawyers for Zach are now asking a judge to grant him a new trial.

Leo Schofield spent over three decades serving a prison sentence for the brutal murder of his young wife, Michelle Schofield. "20/20" documents the significant developments in the case since his conviction, including the identification of fingerprints found inside Michelle's car, belonging to a convicted killer who lived in the area and would later confess to the crime. Now, in April of 2024, following nationwide attention to his case, Leo was released from prison on parole. For two years, "20/20" has reported on Leo's legal journey and gives an inside look at the ongoing battle to clear his name and his new life following his release from prison.

A new interview with Keith Papini after his ex-wife Sherri Papini served time in prison for her false kidnapping tale and mail fraud.

A couple is murdered inside their home, possibly by someone trying to hide a secret double life.

It's the case that has fixated the nation: Karen Read is the woman charged with second-degree murder in the death of her Boston police officer boyfriend, John O'Keefe, in a tragic and controversial case that has left families and a community demanding answers.  

Exclusive interview with Ashley Benefield, the woman at the center of the so-called "Black Swan Trial."  Was she forced to defend her life, or was there something more behind the killing?

A secret romance in a remote Alaskan town leads to murder. Police body camera footage reveals clues for a multi-state hunt for the killer.

When a young singer disappears, her family, police and a woman with a prophetic vision launch an urgent search, but it's a set of keys that unlocks the answers.

Romantic jealousy leads to murder, and detectives discover the killer was closer than they could have imagined when a cold case leads to a conviction.

When 27-year-old Laura Ackerson from Kingston, North Carolina, goes missing – not showing up for work, not answering phone calls and failing to pick up her children at custody exchange – her friends and family begin to panic. Police launch a cross-country investigation that leads to a rural muddy creek in Texas and uncover a trove of evidence and troubling surveillance video.Police eventually make a gruesome discovery in the murky waters of Oyster Creek—Laura's dismembered human remains. The father of her children, Grant Haze, becomes one of the prime suspects as does his wife, Amanda. Police question both of them who point fingers at each other – leading authorities to question who killed Laura. "20/20" speaks with Grant; Amanda's adult daughter, Sha; friends and acquaintances of Grant and Laura, as well as law enforcement and prosecutors involved in the case.

The latest on the case of Erik and Lyle Menedez, the brothers who killed their parents in Beverly Hills, and the newfound support in the effort to free the brothers. Plus, the never-before-seen excerpts from the "20/20" interview with the brothers.

It was a cold January day in the Buckhead neighborhood of Atlanta when a young, beautiful socialite, Lita McClinton Sullivan, answered the front door of her home. Surprised to see a delivery man holding a dozen pink roses, Lita began to accept the delivery — but in an instant — the delivery man pulled out a gun and fired shots, leaving Lita with a fatal wound to the head. 

A wife/mom goes missing the night of a Halloween party, and her car is found abandoned by the side of the road. The incredible story of Karen Swift, with exclusive interviews, is ONLY on "2020."

A heart-pounding body-camera video captures moments after a firefighter is gunned down. A family drama unfolds in real time as police hunt for the killer.

It was one of the most notorious murders in the Atlanta area when a father was gunned down while dropping his young son off at preschool just days after a mysterious person was seen lurking outside his home with a gun.

A whispered call for help and 33 hours of interrogation lead to the discovery and capture of a college town serial killer.

The unsolved murder of JonBenét Ramsey, the 6-year-old pageant queen found murdered in her home, including an all-new interview with John Ramsey and never-before-seen footage of Barbara Walters' interview with both parents, John and Patsy Ramsey. 

The investigation into a Texas murder reveals the killer may have been watching all along.

The latest reporting on the investigation, exclusive interviews and chilling new details in the Idaho case.

A hockey player, a brutal murder and a shocking witness – the victim's young daughter.

Did a mom found dead in a luxury apartment slip and fall, or was it something more sinister?

Was it a case of self-defense or murder after a mom of two shot and killed her partner?

Affairs. Antifreeze. A letter from the grave. What really happened to Julie Jensen?

After a mother and daughter are murdered, investigators encounter a self-proclaimed vampire and taunting letters from a killer.

An Instagram model's relationship with an older man turns deadly, and a witness provides a shocking account of the fatal day.

Breaking coverage and exclusive analysis after a jury found former South Carolina attorney Alex Murdaugh guilty of murdering his wife and son.

A man wakes up to find his fiancée dead; a shocking confession changes everything.

How a North Dakota love triangle ended with murder and a house in flame.

A college student, Lauren McCluskey, is murdered after being stalked. Did the University fail to protect her?

An open marriage, a secret affair, and a sinister plot for murder.

A devout husband goes from victim to murder suspect; how a wife's secret recording changes everything.

As environmental crises cause a Las Vegas reservoir to recede, a trail of bodies from decades past is revealed.

A clown murders a Florida mom, leading to a 30-year journey to solve the case.

A love triangle involving a divorced mother and two wealthy doctors ends in a successful murder-for-hire plot.

A serial killer works as an FBI informant while concealing horrific crimes.

The courageous journeys of families and survivors following the tragedy at an elementary school in Uvalde, Texas.

After a popular local musician is found dead, covert police surveillance uncovers horrific murders in Colorado and exposes a killer.

A twisted couple's bizarre marriage pact, and how one of them was brought to justice by a small-town police chief.

The notorious disappearance of Kristin Smart, whose killer was finally brought to justice after a decades-long investigation.

The dramatic twists and turns in the more than decadelong investigation into the Gilgo Beach murders.

After a teen vanishes, her family searches for answers but police see a suspect closer to home.

A 12-year-old is kidnapped during a sleepover with her friends; authorities launch a cutting-edge investigation to find her.

The stunning case of an illicit affair, manipulation and murder.

An inmate and corrections officer vanish. Was it a kidnapping – or a forbidden romance?

When a boy is kidnapped riding a bike, parents, police and a blogger work to bring him home.

After a woman vanishes, police uncover her husband's dark past.

A young woman's mysterious disappearance and the search-and-rescue operation that led police to a barn full of dark secrets.

After a young couple is murdered, their true identities lead to a shocking twist about their missing baby.

Reporting on a verdict in the case of a beloved law professor's gruesome murder.

When multiple women are murdered in Texas, police hunt for a serial killer – but is he closer than they think?

The murder of a beloved mom sparks an international manhunt; police uncover clues in an accused killer's diary.

A former NFL player and his wife are murdered in Texas and the shocking evidence in their son's third murder trial.

After a woman was found dead, authorities uncovered an elaborate web of lies surrounding James Addie, spun to conceal his biggest secret of all – he was living a double life.

A new "20/20" documents the latest details in the developing story on the Murdaugh family murders, the alleged financial crimes of Alex Murdaugh and other unusual events surrounding the family.

Lori Vallow's brother Adam Cox sits down for the first TV network interview about the tragic family events that led up to the murders of his sister's two children.

For over 26 years, authorities tried to locate Jodi Huisentruit, a 27-year-old anchorwoman who vanished in Mason City, Iowa. Now "20/20" explores surprising new leads in the case.

Michigan mother of three Sharee Miller sat in the center of a complicated love triangle. She used sex, deception and the internet to pit her lover, Jerry Cassaday against her husband Bruce Miller.

A new "20/20," in collaboration with Plum Pictures, features an exclusive prison interview with Diane Staudte, the mother behind a sinister plot to poison her husband and two children.

In a special "20/20" event, ABC News reports on the latest chapter in the downfall of Elizabeth Holmes and her blood-testing company Theranos, once valued at $9 billion.

Diane Sawyer decodes the mysteries behind the Heaven's Gate cult, including an exclusive interview with Rio DiAngelo, a member who left the group.

Two months after his death, a new "20/20" reports on Robert Durst, the fugitive multimillionaire New York real estate heir and his shocking trial that led to a murder conviction.

A new "20/20" in collaboration with Plum Pictures features the first network interview with Wendi Mae Davidson from prison, where she is serving a 25-year sentence for her husband's murder.

For the first time in 20 years, Haylei Jordan speaks out to "20/20" and reveals insight into her mother's troubled past, including her allegedly volatile relationship with Larry McNabney.

Can text messages sent from miles away lead to time behind bars? "20/20" reports on the unprecedented suicide texting case that landed Michelle Carter in prison.

Anthony Harris speaks with ABC News' 20/20 more than 20 years after he was released from prison for a crime he didn't commit, the murder of his neighbor Devan Dunvier. Her killer is still wanted.

Never-before-broadcast video gives insight into the mind of serial killer Henry Louis Wallace, who confessed to 11 murders from 1990-1994, and his only surviving victim speaks in his first interview.

A couple is murdered inside their home. Could the killer be trying to hide a secret double life?

A new "20/20," in collaboration with Plum Pictures, features an exclusive interview with Laura Day, nearly a decade after her first-degree capital murder conviction for her 6-year-old stepson's death.Aka "Wave of Deceit"

Two go on safari, one returns; an exclusive interview with a man who says he heard a shocking confession.

For three decades, Leo Schofield has been serving life in prison since his wife's brutal stabbing. The "20/20" season 45 premiere poses the question: is Leo in prison for the crime of another man?

Never-before-seen police tapes from inside the Sherri Papini case.

A workplace romance turns fatal for a Baton Rouge teacher-of-the-year mom. Could a three-year-old eyewitness help crack the case?

New details about the case of 17-year-old Brittanee Drexel, whose disappearance while on spring break stumped police for years.

An international search for a California man suspected in his wife's murder takes a shocking twist.

Video evidence leads police to learn the shocking identity of a former Arkansas senator's killer.

The murders of three young girls in 1977 turned an Oklahoma community upside down after the case went cold for decades.

John Quiñones examines why investigators say an act of "divine intervention" helped them solve a Minnesota farmer's murder.

When a husband is violently murdered, his wife and her alleged lover become suspects.

A mysterious drug overdose kills new mom Christina Harris. Would she leave behind a crucial clue that actually points to a killer?

Police launch a 38-day nationwide manhunt to find a 15-year-old Tennessee student taken by her teacher.

An exclusive interview with a fake doctor who hid a deadly secret.

Behind the glitz and glam of one of the sexiest shows in entertainment, an FBI investigation revealed Chippendales founder Steve Banerjee was the mastermind behind multiple murder-for-hire plots.

In the 1970s, a notorious serial killer makes a winning appearance as a contestant on a popular dating show in the midst of his killing spree.

New insight into the murder of JonBenét Ramsey; the video diaries of legendary detective Lou Smit, who was brought out of retirement to investigate the murder of the child beauty queen.

A man who claims to have killed his wife while sleepwalking opens up about the incident, his children and his life in prison.

On the anniversary of Anna Nicole Smith's death, her daughter visits the most influential places in her mother's life.

A world-renowned surgeon is caught in a web of lies and deceit by his fiancée.

Margaret Rudin discusses her desire to prove her innocence in the murder of her husband.

Investigation into the past of Lori Vallow, whose two missing children were later found dead.

A true crime love triangle mystery. Now for the first time, an exclusive interview with the accused wife, the day before she was to take the stand.

Angie Dodge was murdered in 1996 and the wrong man served 20 years in prison for the crime. Her mother never stopped investigating and helped catch the true killer in 2019.

Tonight ABC News presents a live "20/20" primetime special on the aftermath of the Atlanta mass shooting and the increase in anti-Asian American hate crimes around the country.

A young woman goes missing. There's no body, no murder weapon, no crime scene. Now, follow one mother's crusade for justice in this true crime investigation.

In a new interview, convicted murderer Lyle Menendez speaks out from prison following Menendez Brothers' newfound TikTok fame.

The search for a killer whose reign of terror left five Florida college students dead over four days.

A family exclusively discusses their seemingly perfect husband and father's deadly secret.

An intimate portrait of George Floyd's life on the heels of Derek Chauvin's murder conviction.

New interviews reveal shocking info on a botched murder investigation into who killed Riley Fox.

Eighteen years after his pregnant wife's murder, could Scott Peterson receive a new trial?

New details are revealed in the case of a missing Colorado mom who secretly ran an expensive escort business.

The couple at the center of the so-called "Gone Girl" kidnapping case reveal new details to Amy Robach.

What happened to Fort Hood soldier Vanessa Guillen? "20/20" features the first TV interview with her fiancé.

An inside look at the life of socialite Ghislaine Maxwell, Jeffrey Epstein's alleged co-conspirator.

20 years after so many young mothers lost their husbands, Diane Sawyer brings nearly 40 families back together to share stories about their resiliency and hope.

David Muir speaks with survivors and spends time with families who lost loved ones 20 years after the attacks.

Three young women were murdered on Stanford university's campus within two years of each other. For nearly 50 years, the mystery remained unsolved until DNA technology finally linked the killers.

A millionaire, an ex-NFL player and a mom become a deadly love triangle. Nanette Packard and Eric Naposki are serving time for the murder of her fiancé Bill McLaughlin.

Anna Sorokin, known as the "Soho Grifter," conned the highest social circles into believing she was a German heiress worth millions, featuring an interview with Sorokin following her release from prison.

Behind the glitz and glam of one of the sexiest shows in entertainment, an FBI investigation revealed Chippendales founder Steve Banerjee was the mastermind behind multiple murder-for-hire plots.

Joe Bryan, a former principal in Clifton, Texas, was convicted of murdering his wife Mickey Bryan in 1985, a crime he maintains he didn't commit. Was it connected to another murder in the small town?

The first wife of a "Jekyll and Hyde" Manhattan plastic surgeon mysteriously disappears. More than 30 years later, Robert Bierenbaum confesses to her murder.  John Quinones investigates.

Why the Petito case went viral and the outcry for the same attention to be applied to the cold cases of others, especially people of color and indigenous women.

Before serial killer Keith Hunter Jesperson, known by his nickname "Happy Face Killer," turned himself in in 1995, authorities believed Laverne Pavlinac and her boyfriend murdered his first victim.

Julie Rea was in prison for her 10-year-old son's murder until a "20/20" viewer helped crack open the case, leading to a serial killer confessing to the crime. One of his attack survivors speaks out.

Diane Sawyer's exclusive with the Turpin children who escaped parents' house of horror.

Arbery's mother Wanda Cooper Jones discusses her mission to find truth and justice after the tragedy that changed their lives forever.

The shooting tragedy on the 'Rust' movie set – what really happened? Now, hear breaking new interviews from crew members who were there, the Sheriff, the DA, and the father of the armorer.

Interviews with Amanda Berry, Gina DeJesus and Michelle Knight, who made headlines when they escaped their Cleveland kidnapper's home after a decade of captivity.

The story of Pamela and Gregg Smart, Gregg's death, and the trial that convicted his wife of accomplice to first-degree murder, among other charges. Close to three decades later, Pamela maintains her innocence.Pamela Smart talks about the murder of her husband, for which she was sentenced to life in prison.

A couple was preparing to sell their yacht to move closer to family when they vanished forever. Investigators found that complete strangers to the couple were responsible.

A look at the elaborate plan Edward Shin hatched to cover up the murder of his business partner Christopher Smith.

Ted Bundy's longtime girlfriend and her daughter open up about their lives with him.

Details surrounding the Jodi Arias murder case, including excerpts from Arias' personal journal and victim Travis Alexander's blog, and new interviews with Alexander's friends and family.

The stars of the hit show look back at the best pitches, the biggest fights, and of course, the greatest money makers and those making the greatest impact with their businesses.

After spending almost 10 years behind bars for his former girlfriend's death -- a crime he says he did not commit -- Nicholas McGuffin opens up after his conviction is overturned.

The extraordinary chain of events that led to a COVID-19 global health crisis.

The night a marijuana dispensary owner was kidnapped, tortured and maimed; Cortney Shegerian is the bait in a police plan to arrest Hossein Nayeri; Hossein Nayeri appeals to the jury in his own trial.

Communities across US take drastic measures to slow spread of coronavirus; How prepared are we to test for the novel coronavirus; The 'new normal' of the coronavirus.

Decades after four bodies were discovered in New Hampshire's Bear Brook State Park, a podcast renews interest in the cold case and helps lead authorities to solving it.

Healthcare workers and medical professionals' extraordinary work on the frontlines, the latest developments on the COVID-19 pandemic and how hard the crisis is hitting the U.S.'s gig economy.

The chilling true crime story of a '85 Chicago Bears legend and the murder of his pregnant girlfriend.

The sting operation to catch a woman in a murder-for-hire plot is filmed for a reality-TV series.

Interviews with daughters of Karl Karlsen, who nearly got away with murdering his wife and son.

New details regarding the arrest of Ghislaine Maxwell, a longtime companion of the disgraced financier, and hear from the women who survived his crimes.

Julius Jones, who was convicted in the shooting death of an Oklahoma businessman at 19 years old, tells his version of events, claiming he is innocent, from death row.

In 2017, authorities reopen the investigation into the 1983 murder of a young Black man in Georgia.

Remembering the television pioneer, his life and his legacy as the legendary host of the 'Live' morning franchise for 28 years.

An investigation into why the United States was unprepared for COVID-19, how government and administration officials failed and missed the warning signs, and what the country needs to do to reopen.

Exploring how the 1963 March on Washington for freedom and jobs began. 

An ABC News special examines his career, from playing Jackie Robinson, Thurgood Marshall, to T'Challa in "Black Panther." His influence was felt far beyond Hollywood, all the way to the White House.

A 20-year-old U.S. Army soldier, Vanessa Guillen, is murdered inside a Fort Hood, Texas, armory by another enlisted soldier.

The ex-wife of former NBA player Lorenzen Wright pleads guilty to facilitating his murder.

Melanie McGuire insists she's innocent in husband's 2004 killing. Her trial captured the nation's attention after fishermen found her husband's legs in a suitcase.

John Lennon's close friends and colleagues provide insight into his life and lasting legacy; radio reporters talk about the last interview John Lennon did with them the day he died.

James Dailey, who is on death row for the 1985 murder of Shelly Boggio, said Paul Skalnik's lies helped convict him. One of the prosecutors in the case says Dailey received "an appropriate sentence."

A killer terrorizes idyllic California neighborhoods in the 1970s and 1980s, evading authorities as he lives among his victims for over four decades.

A deep dive into the disappearance of wife and mother Susan Powell and the stunning twist involving her two young sons at the hands of her husband Josh Powell.

An investigative "20/20" by ABC News and Louisville's Courier Journal takes a deep dive into the evidence in the Breonna Taylor case and searches for answers from the night that claimed her life.

After Boeing's 737 MAX planes were changed and cleared to fly again, "20/20" reports on the aircraft's controversial flight control software and how it mistakenly sent planes into deadly nosedives.

A woman's seemingly obsessive and threatening messages to an ex precede a stunning twist.

Rodney Reed attempts to clear his name and overturn his conviction for a 1996 murder.

In a case that remains shrouded in mystery, actor Robert Blake speaks to "20/20" thirteen years after he was acquitted in his wife's murder.

Televangelists Jim and Tammy Faye Bakker's religious empire and the sex and financial fraud scandals that engulfed it.

A look into the past of Cary Stayner, who terrorized Yosemite National Park in 1999, murdering four women; interviews with former FBI agents Jeff Rinek and John Boles; an interview with one of Stayner's original intended victims.

After "BTK" serial killer Dennis Rader's shocking confession, his daughter had to find ways to cope with her new, shattered reality.

A New York woman convicted of murdering her second husband and attempting to murder her daughter.

Insight into serial killer Ted Bundy's vicious past and crimes, featuring new interviews with key players, including surviving victims and those who were instrumental in helping place him behind bars.

A man terrorizes the city of Kalamazoo, Mich., for eight hours on Feb. 20, 2016.

When 19-year-old Sarah Stern's car is mysteriously found on a New Jersey bridge, a former classmate comes forward with information that helps authorities discover what happened.

Dr. Joseph Sonnier met his girlfriend Richelle Shetina at a dance class, and the two traveled to Paris together, just weeks before the unthinkable happened.

The rise and fall of Silicon Valley star Elizabeth Holmes and her technology company Theranos.

A woman shoots her three young children, seriously injuring two and killing one.

A man convicted of killing his pregnant wife is set free after less than eight years in prison.

A 21-year-old Miami hotel guest has no memory of being attacked, raped and left for dead.

Rebecca Schaeffer is shot point blank at the door of her Los Angeles home by her longtime stalker.

A woman discovers her biological father is actually her mother's former fertility doctor.

A mother on death row for the unthinkable. Now the court orders testing on crucial crime scene evidence.

A man convicted of murder has his conviction overturned by an appeals court and waits to see if a higher court agrees it should be overturned.

Revisiting the 1989 case of a female jogger who was brutally raped and beaten in New York City.

Daniel Wozniak was a community theater actor in California when he was arrested for the murders of Sam Herr, a war veteran, and Julie Kibuishi, a college student and dancer, in May 2010.

When a woman is found unresponsive in her bathtub, two of her daughters suspect their father is responsible.

Trump on polls showing Biden ahead: 'I don't believe those polls; Trump on Mueller, immigration and putting his personal touch on Oval Office

How did an ordinary-looking American family turn into pistol-wielding bank robbers?

When a woman secretly records her husband's affair, she snaps and kills his girlfriend and herself.

A lifelong hustler discovers the strip club scene; Strip club workers' new hustle takes a dark turn; Doctor almost swindled out of $100,000 after three dates with woman.

Detectives use DNA evidence to solve a cold case involving the murder of an 18-year-old woman.

Performers Siegfried Fischbacher and Roy Horn open up about the infamous career-ending tiger attack.

Daughter of Kansas woman who went missing found alive 15 years later; John Robinson, the conman; John Robinson goes to trial for three murders in Kansas.

Dan Markel and Wendi Adelson's marriage falls apart in Florida; FBI tries to get more information on Markel's murder; Where Dan Markel murder case stands today.

Dorothy Stratten's life and promising career are cut short when her estranged husband kills her.

Payton Leutner speaks out for the first time after two friends stabbed her and left her for dead in the woods of Waukesha, Wis., to prove themselves to a fictitious character known as "Slender Man."

A man is convicted of killing his 8-month-pregnant wife; a tip points to another suspect.

Mary Jo Buttafuoco, Joey Buttafuoco and their daughter Jessie reflect on their lives following Mary Jo's shooting in 1992.

When a University of Illinois scholar goes missing, a suspect's girlfriend works with the FBI to go under cover and secretly record a conversation that ultimately cracks the case.

Beth Holloway takes her first extensive trip back to Aruba in nearly ten years after her daughter, Natalee Holloway, disappeared while on vacation there almost 15 years ago.

Thirty years after she learned she was switched at birth, Kimberly Mays reveals details about her tough childhood and her struggle with her identity.

A look at Lou Pearlman, former manager of *NSYNC, Backstreet Boys, and O-Town, and his past that includes ponzi schemes and swindling investors and banks out of hundreds of millions of dollars.

Mom says daughter suffered from illnesses and needed wheelchair, feeding tube; Gypsy Blanchard on what happened the night mom was stabbed to death; Man says he feels ex-girlfriend used him to kill her mom.

North Korean leader Kim Jong Un and his fractured family's 70-year dynastic rule; interviews with those who knew Kim Jong Un and his assassinated half-brother.

An investigation is underway in California after 13 siblings ages 2 to 29 were allegedly held captive in a home. 20/20 reports on the latest details coast-to-coast with those closest to the story.

‘Army of survivors' break their silence at Nassar sentencing; Larry Nassar defends himself in court; The repercussions from Nassar sexual abuse case.

Slender Man stabbing: Parents recall what happened that morning; 12-year-old survives being stabbed 19 times by her friends; What is Slender Man, the figure that motivated two girls to stab their friend.

Prominent Virginia couple found brutally murdered in their home; Detectives question daughter of couple found murdered and her boyfriend; Boyfriend, girlfriend travel to Europe during murder investigation.

The stars of the most influential romantic movies take viewers behind the scenes and dissects the most memorable moments from these classics.

As ABC's hit show "Roseanne" gears up to return to television this spring, the entire cast reveals behind-the-scenes moments, memories, and what to expect from the revival of one of TV's most iconic sitcoms in a special edition of "20/20." Returning actors Roseanne Barr, John Goodman, Laurie Metcalf, Sara Gilbert, Lecy Goranson, Michael Fishman and Sarah Chalke discuss the show's legacy and share what life was like starring on the No. 1 show.

Angelika Graswald, who was convicted of involuntarily killing her fiance, tells her story.

Man recalls last hours before son, wife were shot and killed; Dad survives son's murder plot that killed mom and brother; Son becomes prime suspect in mom, brother's murders.

Woman dies mysteriously in historic California mansion; Dead woman's family refuses to believe she committed suicide; Nearly seven years after mysterious death, civil trial begins

Investigating a little-known study headed by psychiatrist Dr. Viola Bernard that saw several sets of twins and triplets separated as infants, adopted out to different parents and monitored to study the effects of nature versus nurture.

The unsolved disappearance of a 5-month-old infant in 1997 is reexamined after two women contacted the baby's mother online, believing they may be her missing child. Included: a look at indictments that were made against the parents and then dropped.

ABC News' Amy Robach sits down for the first interview with Denise Huskins and Aaron Quinn, who describe the anguish they felt after authorities at the time dismissed Denise's kidnapping as a hoax, causing the case to be known as the "Gone Girl" kidnapping after the fictional book and film. Denise recounts her nightmare revealing new details about her harrowing hours in captivity and opens up about confronting her kidnapper, Matt Muller, in court. The couple discusses the damage the ordeal has had on their careers and personal lives, and what the future holds now that the truth has been revealed. The interview comes just days after Denise and Aaron reached a tentative settlement of $2.5 million with the city of Vallejo in their civil lawsuit for defamation and infliction of emotional distress.

Recently divorced woman starts dating man with a troubled past; Man, girlfriend allegedly behind murder-for-hire plot to kill their exes; Arrested for alleged murder-for-hire of their respective exes.

A convict's mother is interviewed about the great lengths she's gone to in order to prove her son is not guilty of murdering a college student in 2003. Included: details on an overturned conviction and a new confession in the case.

Strikes will establish a strong deterrent of chemical weapons: Trump; Pentagon officials remark on strikes in Syria

The event America's been waiting for - James Comey - his first interview since being fired by President Trump.

So many strong hardworking American women living paycheck to paycheck face threats, humiliation, & danger at work. Now Diane Sawyer reporting.

Woman recalls being branded as part of joining secret society; What former NXIVM members say about Keith Raniere's attitude toward women; How 'Smallville' actress became involved with NXIVM.

‘East Area Rapist' terror grips Sacramento as number of victims rises; Authorities say at least 12 killed by 'Golden State Killer' across California; 'Golden State Killer's' spree allegedly began when he was a cop.

'Oh, here we go,' Southwest pilot recalled saying after hearing a bang; 'It was terrifying,' recalls passenger on deadly Southwest flight

A look at the two most important women in Prince Harry's life.

Memorable moments from Prince Harry and Meghan Markle's wedding.

Summer blockbuster stars reminisce about time on set and reveal little-known facts on special edition of "20/20".

Reports on ankle bracelet monitoring failures and murders committed by people ordered to wear them.

Woman's sudden death raises family's suspicions; Sheriff acknowledges missteps in handling dead woman's case.

Mom discovers daughter brutally attacked by man with shovel; Attack survivor undergoes hypnosis to remember details about assault; DNA match links man to near-fatal shovel attack.

Woman is convinced stepfather asked Pagan biker group to kill her mother.

'I felt nervous and worried': 12 boys, coach trapped inside Thai cave; The moment when 12 boys, coach trapped inside Thai cave were found alive.

Adults abandoned at birth turn to genetic genealogy to find biological family; Adults abandoned at birth meet biological family members for the first time; Woman meets biological sister for first time, finds another long-lost sibling.

Parents fear for young daughter's safety as her behavior changes dramatically; Rare disorder may explain 11-year-old's sudden odd tics and moodiness; Why is PANDAS so controversial? Medical professionals are divided.

Thai cave rescuers say they expected some kids to die during the mission; Mission is a 'go': Rescuers jump into action to save boys from Thai cave.

A look back at the career, life and legacy of the "Queen of Soul".

John McCain, a devout maverick, dies at 81; John McCain on the horrors he endured as a POW; John McCain's colleagues, friends reflect on his legacy.

This summer the world watched in awe as a treacherous mission was staged to save 12 boys and their soccer coach from a flooded cave in Thailand. Now that the team is safe, a special edition of "20/20" features ABC News foreign correspondent James Longman's exclusive interview with the boys and the coach, Ekkapol Chantawong, known as Ek. The boys open up about previously unknown details including the excitement they felt when they first entered the cave, their time studying at a Buddhist temple after the rescue, and their enthusiasm and dreams for the future – including one boy who says he wants to become a Navy SEAL. Coach Ek sheds new light and details on the moment he first realized they were trapped, how he kept the boys calm in the cave and how grateful he is that they are all alive.

In October 2013, 14-year-old Abby Hernandez disappeared on her way home from school without a trace. Nine months later, the New Hampshire teen returned home with a harrowing story of kidnapping, captivity and unspeakable abuse. Mostly silent for nearly five years since she disappeared, Abby tells her story for the first time to ABC News correspondent Deborah Roberts. She opens up about the difficult details of her abduction including being held for months in captivity by Nathaniel Kibby, who forced her to wear a shock collar and kept her prisoner inside a shipping container; and the psychological strategies she had to deploy in order to stay alive, including bonding with Kibby. Abby discusses her life now and how it has changed since her captivity.

A high school cheerleader and football player's tumultuous relationship; Teen found dead in her bed from a gunshot to her head; Today, convicted killer apologizes for shooting ex-girlfriend.

Interview with Elizabeth Thomas, who was taken at age 15 by her Tennessee high school teacher, resulting in a 38-day nationwide manhunt.

Stories of Americans who followed their dreams and started new careers later in life, including a woman who quit her finance job to pursue acting, and a woman who became the oldest person to graduate the from the Houston Police Academy.

Audio detailing the night Prince nearly died from overdose on plane; Prince suddenly dies at Paisley Park from fentanyl overdose.

Teacher's gruesome 1992 death launches decades-long mystery; Pennsylvania teacher's 1992 death grows cold.

An exclusive sit-down interview with first lady Melania Trump.

11-year-old arrested for his pregnant soon-to-be stepmother's murder: Why police believe ex-boyfriend was not connected to woman's murder; What it's like to be 11 years old and accused of murder.

A $3.5 million mansion, a beautiful family's future up in flames; Closing in on the brutal killer in DC mansion murders; Friends, family testify against suspect at trial for DC mansion murders.

Former hockey star's young family shattered by wife's murder at home; Manhunt begins for brutal killer of mother of two; 7-year-old daughter becomes key eyewitness in attack on mom.

Former first lady Michelle Obama talks about her new memoir, ``Becoming.''

26-year-old face transplant recipient: 'I see me'; Face transplant recipient's mom learns about renowned reconstructive surgeon.

Texas couple's wedding anniversary celebration ends in tragedy; Woman discovered tied up in a closet, husband stabbed, beaten to death; Woman's family believes husband's killer is still out there

Looking back at the legacy of a president.

Chris and Shanann Watts' seemed to be in love, say friends, family; In a shocking statement, Chris Watts describes how he killed his wife; Shanann Watts and her two daughters are found dead.

Ex-members of the Church of Scientology who crusade against it; actress Leah Remini discusses her fight against the Church of Scientology and her goal of making it lose its tax exempt status.

Profiles of working individuals and families across America who are struggling to stay in the middle class; issues of dwindling job opportunities, income inequality and community solutions are explored.

20/20 Anchored by Elizabeth Vargas and David Muir Airs Two Special Hours Thursday and Friday, Featuring a Preview of the Inauguration, Exclusive Interviews With Ivanka Trump, Donald Trump Jr. and Eric and Lara Trump, and Live Coverage From Inaugural Balls.

A celebration of the life and legacy of legendary actress Mary Tyler Moore, from her childhood to her groundbreaking career.

A man claims his mother disappeared during an ill-fated fishing trip the two had embarked on.

Playboy model and reality TV star Anna Nicole Smith is remembered ten years after her sudden death.

The ex-wife of Justin Ross Harris talks about the death of their son and the ensuing court case.

"20/20" takes a look back at the Emmy Award-winning series "Shark Tank" and the incredible American entrepreneurs behind $100 million in deals made over the past eight seasons.

A 16-year-old gay teen whose mother sent him to a series of Christian-run youth camps that practice so-called "gay conversion therapy'' talks about his experience.

Charles Manson's tumultuous childhood and time in prison; What happened the night Sharon Tate was murdered by Charles Manson's followers; Where Charles Manson and his followers are today.

After spending 11 years in prison for allegedly murdering her mother, Noura Jackson is released and a new trial is ordered.

What happened before woman was stranded in desert near Grand Canyon; Stranded student near Grand Canyon builds fire, sign to signal for help; Student stranded near Grand Canyon reunites with her rescuers

Two mothers hire a private investigator Sheila Wysocki to search for answers concerning the mysterious deaths of their children, Lauren Agee and Jonathan Crews.

A Canadian woman who served time for catfishing professional basketball player Chris Andersen and a 17-year-old girl who had a social media presence discusses the reasons behind her scheme.

Two years after the interview during which she announced she was transitioning to female, Caitlyn Jenner reconvenes with Diane Sawyer to talk about the realities of her life.

A Tennessee high school teacher accused of kidnapping his 15-year-old student causes a 38-day manhunt that ends with the two being found in northern California; interviews with people close to the case.

Computer programmer and businessman John McAfee discusses being named a person of interest in the murder of his neighbor and the resulting tumult. He also discusses what his life is like today.

Tracking families that have been affected by severe attachment to digital devices, from the height of unmanageability to the journey toward recovery.

When a 16-year-old girl accuses a classmate of raping her at a party, the investigation divides the small Alabama town.

Exclusive interviews, photos and footage related to the Nixon Watergate scandal.

An international investigation into Otto Warmbier's 17-month imprisonment in North Korea, and his death, which occurred less than a week after he was brought back to the United States in a state of unresponsive wakefulness.

An exploration of the nationwide crisis of road rage and how incidents can quickly become dangerous; traveling across the country with the Colorado State Patrol.

Investigation into the questions that still remain surrounding the 1997 murder of designer Gianni Versace.

Friends of O.J. Simpson discuss the former professional football player and the armed robbery of memorabilia dealers that landed him in prison.

Footage of U.S. border officers accused of encouraging a 16-year-old to drink a dangerous liquid to prove he's not a smuggler; cases of border agents and officers being accused of abusing those crossing the border.

A jury finds a young woman whose boyfriend committed suicide with her encouragement guilty of involuntary manslaughter.

Molly Martens Corbett says husband was controlling, possessive; Former FBI agent, daughter charged with the murder of her husband; Molly Martens Corbett, her father head to prison for murder.

Who are the white nationalists and Antifa; White nationalists, counterprotesters face off in Pikeville, Kentucky; Violence erupts between white nationalists, counterprotestors in Charlottesville.

A reality-TV executive receives a rare hand transplant after losing limbs due to a rare disease.

A freshman at Northern Arizona University who shot four fraternity brothers outside of a party -- killing one -- claims self-defense, leaving the local community divided; interviews with the survivors and the parents of the young man who died.

Doctors with disabilities and others share stories of resilience and survival in spite of tragedy.

Archival footage and new interviews provide a look at the arrest and conviction of Scott Peterson in the murders of his wife, Laci, and their unborn son, even as Peterson awaits answers to an appeal and a legal petition from death row.

Authorities set up an elaborate sting operation to catch a Houston couple who were allegedly attempting to hire a hit man to kill their exes.

Brother recalls the last day he saw his sister Holly Bobo alive; Missing nursing student Holly Bobo's remains are found by ginseng hunters; Jury returns with verdict in man's trial for Holly Bobo's murder.

Las Vegas country music festival underway, as shooter prepares in hotel; Woman describes moment when husband was shot while holding her; Remembering the Las Vegas shooting victims.

Multiple women describe alleged encounters with Harvey Weinstein; Angelina Jolie, Gwyneth Paltrow claim Weinstein harassed them; What could happen next for Harvey Weinstein, his accusers.

Twenty-seven years after a Florida woman was fatally shot on the doorstep of her home by an assailant in a clown costume, police arrest her husband's new wife.

An investigation into the unanswered questions still remaining about the Las Vegas mass shooting; interviews with friends, neighbors, and a girlfriend of Paddock's; survivors and those coping with their new lives.

When former Marine discovered teen son talking to ISIS recruiters; How ISIS uses the internet to target young Americans for recruitment; The fight against ISIS's reach on America's youth.

Civil suits allege sexual assault and defamation regarding a college coach and an athlete.

Following the life of Nathaniel Newman -- who was born with a condition known as Treacher Collins.

The special will include insider details on classic holiday films including a casting decision, Jim Carrey's torture-surviving technique training during "How the Grinch Stole Christmas"; and a visit to a Vancouver psychiatric hospital, the stand-in for Gimbal's toy department in "Elf." The hour will consider the question of whether favorites such as "Trading Places" and "Die Hard" qualify as Christmas movies; and talk to a spokesperson from Rotten Tomatoes to discuss what it takes to qualify as a Christmas classic. The history of small-screen favorites such as "A Charlie Brown Christmas" and "Rudolph the Red-Nosed Reindeer" will be featured, as well as interviews with the voice-over artists behind these favorite animated characters, and the owner of the fully restored Santa and Rudolph puppets.

Investigation into the 2002 murder of Christa Worthington and whether the man convicted actually committed the crime; a 2-hour special.

Meghan Markle's engagement to Prine Harry; interviews with those who know Meghan; an in-depth look at Meghan's life, family, humanitarian work, and career.

Former members of NXIVM, a professional coaching company, speak out about their experiences in the alleged secret society; NXIVM's litigation tactics against former members and critics.

The only thing more amazing than the lives they save are their own life stories. "20/20" Anchor Elizabeth Vargas sits down with doctors who have disabilities, are inspired by tragedy and practice improvised medicine, as they share their inspiring stories of resilience and survival. The special also goes behind-the-scenes on the set of "The Good Doctor" and interviews actor Freddie Highmore who stars in the show as Dr. Shaun Murphy, a surgical resident with autism and savant syndrome. Highmore discusses how he prepared for playing the role of a doctor with autism and how the public has responded to his role.

A privileged teenager named Ethan Couch, who plead guilty to four counts of intoxication manslaughter, avoids jail time after psychologist Dick Miller claimed the young man's upbringing caused him to have "affluenza".

Convicted of murder despite the lack of a body, weapon or DNA evidence, Mario Casciaro speaks out about the crime he says he did not commit.

When a wealthy doctor is found murdered in his Texas home, a tip leads investigators to the victim's girlfriend's ex-boyfriend.

Criminal charges filed against comic Bill Cosby; Cosby's defamation counterclaim against some of his accusers.

The good and bad ways in which the lives of lottery winners changed; lottery winners discuss their paths to instant wealth.

Michigan state Rep. Todd Courser is caught on tape scheming to spread rumors he was involved in casual gay sex to help cover an extramarital affair between him and a colleague, Rep. Cindy Gamrat.

Investigative genealogist Pamela Slaton helps a man who was abandoned as a baby, a woman with a half-brother she has never met and a woman seeking her biological father search for their families.

An encounter in traffic during a driving lesson leads to a shootout and the death of Tammy Meyers.

After nearly 17 years, Sue Klebold, the mother of Columbine shooter Dylan Klebold, speaks on television for the first time ever about the tragedy, the victims, the relationship with her son and what it was like inside their home.

People try to free their children from a polygamist sect; a mother is confronted by the sect's parishioners; how federal investigations, lawsuits and apostates of the church are fracturing the polygamous community.

A jury decides the fate of Matt Leili four years after he was charged with the murder of his wife, Nique, who went missing from their home a week before being found dead.

Looking at defining moments in the careers of some of the most notable 2016 nominees, including Sylvester Stallone, Brie Larson, Bryan Cranston, Ridley Scott and Matt Damon.

A community theater actor tries to frame a veteran of the war in Afghanistan for the murder of a 23-year-old college student.

David Muir reports on the deadly heroin epidemic that crosses all boundaries and has few treatment options.

ABC News' anchor Diane Sawyer has the first sit down television interview with actress Kate del Castillo. Del Castillo, the woman who was at the center of the controversy with Joaquin "El Chapo" Guzman, discusses what happened and the danger surrounding the takedown of one of the most wanted men in the world.

Tucked away in Manhattan's Lower East Side, a family with seven children lived together in a small apartment for more than a decade, but almost no one knew they existed. The children - one daughter and six sons - were raised in four small rooms, homeschooled by their mother and trapped by their father, who allowed them to leave the apartment they shared only for rare, closely supervised outings. Until one day in January 2010, when one son, Mukunda, a middle child who was 15 at the time, found the courage to break free. The story of the Angulo family was revealed through the award-winning documentary "The Wolfpack," focusing on the six brothers - Bhagavan, Govinda, Narayana, Mukunda, Krisna (now Glenn) and Jagadesh (now Eddie) - then ages 11 to 18, and their unusual upbringing, along with their passion for movies, so intense that they copied down entire scripts, constructed costumes and props, memorized lines and acted out entire scenes.

The 2012 shooting death of Ashley Fallis in her Colorado home is investigated to determine whether she was murdered or committed suicide.

It was a bitter cold evening in April 2013 when sisters Samantha and Gianna Rucki ran away from their Lakeville, Minnesota, home. They left without their shoes or coats and disappeared into the night. But oddly, there was no manhunt to find them, no Amber Alert was issued and there were no police press conferences to provide updates after they went missing. The girls were found almost three years later, alive, healthy and living at a therapeutic horse farm less than three hours away from their family home. Now their mother, who denies having any involvement in their disappearance, is facing felony charges, and the circumstances of how and why these two teen girls vanished is a mystery beginning to unfold.

What would drive a church-going Springfield, Missouri, woman and her daughter to fatally poison two family members with anti-freeze, and attempt to kill a third over a 14-month period? Diane Staudte and daughter Rachel both confessed to the murders of Diane's husband, Mark, and her son, Shaun, and attempting to kill her daughter Sarah, and are both serving life terms in prison. "20/20" takes viewers inside the case, revealing new details of the heinous murder plot. ABC News correspondent Deborah Roberts sits down with Sarah Staudte, the surviving victim, who describes how she discovered that her mother wanted her dead. The hour also features interrogation tapes of Diane and Rachel Staudte describing, in their own words, how and why they did it, as well as interviews with detectives, prosecutors, and friends and family members of the victims.

"20/20" will report on the incredible life and untimely death of music legend Prince. The hour will be anchored by Elizabeth Vargas and will feature reporting from Vargas, Dan Harris from Prince's home in Minneapolis, Chris Connelly in Los Angeles, and Deborah Roberts in New York.

Ron Miscavige, father of the Church of Scientology leader David Miscavige, speaks exclusively to ABC News Anchor Dan Harris about his son's journey within Scientology starting when the family joined in 1970, and then his ultimate rise to current leader of the Church. It is a rare look inside Scientology told by someone who lived it for more than 40 years, 27 of them working for the Church's Sea Organization. Ron Miscavige's experience with and ultimate break from Scientology in 2012 is recounted in his new revealing memoir, "RUTHLESS: Scientology, My Son David Miscavige, and Me."

Could someone ever forgive a mom who would abandon not one but three newborn babies within blocks of each other over a five-year period? It is an incredible mystery that is solved right before viewers' eyes, as "20/20" teams up with renowned DNA detective and genetic genealogist CeCe Moore. Janet Barnicoat, one of those three baby foundlings, started her search as many do, with a Facebook post begging for clues about her biological family. The post went viral. After hearing about her story, Moore volunteered to help her on her search. What followed is a bewildering and shocking story, as Barnicot discovers she is one of three siblings abandoned by the same mother. But once the three are reunited, they go on a quest to find that mystery mom responsible for the unthinkable. It all culminates in a dramatic family confrontation and a series of startling confessions. Even Moore, with her 16 years of experience, had never seen a story like this one – telling Elizabeth Vargas, "It just blew my mind."

What happened to Kelsie Schelling? Twenty-one year old Kelsie mysteriously vanished into thin air in Pueblo, Colorado, over three years ago. The family says surveillance video, text messages and other evidence point to her boyfriend's involvement, yet, to their outrage, police have not yet classified the case as a homicide and have not charged him with a crime. But then a series of Facebook messages to Kelsie's mother raise new theories – is the missing girl's disappearance prompting someone to attempt extortion? "20/20" investigates and confronts those behind the mysterious plot and uncovers developments about what really happened to Kelsie.

Jannie Ligons, a director of a daycare center in Oklahoma City, will never forget the night in 2014 when then-Oklahoma City Police Officer Daniel Holtzclaw pulled her over. Ligons' story of what happened during the traffic stop is exactly the same as the way Holtzclaw tells it, that is until, she says, Holtzclaw forced her to expose herself under the guise of searching Ligons, a 58-year-old mother of four and grandmother of 12, for a concealed weapon. Ligons is African-American, and Holtzclaw is half-white, half-Japanese.

With allegations of sexual misconduct spanning five decades from more than 50 women, it was only this past week that a Pennsylvania judge ruled that there is enough evidence to try Bill Cosby on criminal charges. Elizabeth Vargas brings the latest news in "Cosby on Trial" - a legal battleground that now includes both civil and criminal actions across several jurisdictions - including Cosby's new defamation counterclaims against some of his accusers.

Fourteen-and-a-half years ago Michele Harris, a mother of four young children, disappeared without a trace from her luxurious home in upstate New York. Her abandoned minivan found at the bottom of her driveway on the family's expansive estate led many to believe.

Bobby Brown on Forming New Edition, Then Solo Career; What Led to Bobby Brown, Whitney Houston's Divorce; Bobby Brown on Passion for Cooking, His Kids

Orlando Nightclub Massacre: A Timeline of What Happened; Orlando Nightclub Massacre: A Violent Attack on Prideful Community; Orlando Massacre Suspect's Father: 'I'm Really Saddened and I'm Really Surprised'.

Community Recovery czar Christopher Bathum is accused of sexual battery by former clients.

New hope leads to further investigation into a cold case: the disappearance of Indiana college student Lauren Spierer.

Dallas Ambush Shooting: From Peaceful Protest to Chaos; Dallas Shooting Suspect Wanted to Kill White Cops, Police Say; Black Parents on Talking to Their Kids About the Police.

Jaycee Dugard Recalls the Day She Was Kidnapped; Jaycee Dugard's Mother Terry Probyn on Moving Forward; Jaycee Dugard Checks Off Items on Her 'Dream' List.

A family struggles to have their daughters apparent suicide reinvestigated as a murder

The FBI trails a family of dysfunctional bank robbers.

A suspect, Felix Vail, is investigated and tried for a 50 year old murder of his wife and the disappearance of two other women.

When a wealthy doctor is found murdered in his Texas home, a tip leads investigators to the victim's girlfriend's ex-boyfriend.

Failed efforts to free American humanitarian aid worker Kayla Mueller from ISIS captivity following her 2013 kidnapping.

The investigation into the 2007 disappearance of a soccer mom reveals she had been running an escort business and one of her clients may be to blame.

Diane Sawyer sits down with Elizabeth Vargas to discuss Vargas's secret struggle with alcohol and anxiety as revealed in her book "Between Breaths: A Memoir of Panic and Addiction''; anxiety and alcohol abuse among Americans is examined.

The investigation into the killing of a criminal law professor leads detectives to suspect the murder is the result of a family feud.

Friends, Family Stunned to Learn UNC Student Is Dead; FBI Develops Profile of Murdered UNC Student's Killer; Police Remain Confident They Will Find Faith Hedgepeth's Killer.

After being indicted for second degree murder by a grand jury, Nick Hillary, a black man accused of killing 12-year-old Garrett Phillips, faces trial in an all white town. Garret's mother, Tandy Cyrus, reflects on the emotional aftermath of losing her son.

After two trials, Kimberly Long was convicted of brutally murdering her boyfriend, Ozzy Conde, has spent seven years in prison, and, with the help of The California Innocence Project, she now has a new shot at justice. With her conviction overturned and the possibility of a third trial, 20/20 investigates whether she really committed this violent crime as the prosecution alleges. ABC News Correspondent Matt Gutman sat down with Kimberly as she tells her side of the story.

University of Virginia's former Associate Dean of Students Nicole Eramo talks about the Rolling Stone article detailing the alleged gang rape of one of the school's students at a frat party.

Christopher Waide is convicted of the 2014 murder of 19-year-old Lea Porter and is sentenced to 48 years in prison; the report includes never-before-seen police interrogation videos, surveillance videos and crime scene photos.

U.S. authorities scrutinize a supposed miracle cure for autism that a fringe church is promoting; employees faking injuries to receive disability; an American woman convinces people she is a descendent of French nobility.

Babs Proller told ABC News' "20/20" that she hid a tape recorder during her conversations with federal prosecutors' star witness, Armando Morales.

A look at the life of Donald Trump and how he captured the presidency, featuring interviews with his family, longtime friends and campaign manager Kellyanne Conway.

Journalist Gretchen Carlson speaks out about the sexual harassment she's experienced throughout her life; a former Wall Street trader talks about the sexist atmosphere he observed at work; lengths people will go to to prove harassment claims.

Kiefer Sutherland on Starring in ABC's Hit Show "Designated Survivor"; The Top Secret Bunkers the Government Doesn't Want You to Know About; How Poland Coped When Most of Government Was Killed in Plane Crash

The incredible story of Owen Suskind, a young man with autism featured in the recent documentary "Life, Animated." In 1994, when Owen was almost three years old he started to withdraw and eventually stopped speaking. At the time, not much was commonly known about autism, and Owen's parents, Ron and Cornelia, took him to a specialist who diagnosed him.

A conversation with Keith Papini, husband of the California mom who disappeared on Nov. 2, 2016, and was later found bound and injured 150 miles from her home.

Mark Carver, serving a life sentence for the 2008 murder of University of North Carolina student Ira Yarmolenko, speaks out.

He believes there was enough evidence to indict the Ramseys of a crime.

Entertainers and legends who passed away in 2016 are profiled, including Prince, Muhammad Ali, Florence Henderson, Fidel Castro, David Bowie, Glenn Frey, Merle Haggard, Pat Summitt, Arnold Palmer, Craig Sager, Gene Wilder, Doris Roberts and others.

Stories from the lives of George Michael and Carrie Fisher.

A look back at the lives and careers of actresses -- and mother and daughter -- Debbie Reynolds and Carrie Fisher.

Melissa Moore, daughter of Keith Jesperson, was a teenager when she found out her father was a serial killer.

Suzy Favor Hamilton's Secret Struggles Despite Success on Track; Olympic Runner Suzy Favor Hamilton Becomes Top Las Vegas Escort; Suzy Favor Hamilton Shocked by Bipolar Disorder Diagnosis.

O.J. Simpson: Inside the Case of the Defense 'Dream Team'; Hear O.J. Simpson Speak For the First Time Under Oath.

‘Shark Tank' Shark Kevin O'Leary Names His Top 5 Sales Techniques; What You Might Not Know About the Business of Mark Kay.

Tennessee Woman Claims She's Victim of Online Threats to Her Life; Young Couple Found Murdered With Baby Alive, Covered in Blood; Woman Denies Wanting Couple Dead Because of Social Media Feud

The so-called "affluenza" case of a Texas teenager who caused a fatal car accident that killed four people and severely wounded another made national headlines in 2013 when 16-year-old Ethan Couch's defense team used an unusual argument during the trial. During Couch's sentencing, a psychologist hired by the defense testified that the teen was a product of "affluenza" -- a term used to describe Couch's irresponsible lifestyle associated with his affluent upbringing -- and that irresponsible parenting had "strongly enabled" the accident, despite the fact that Couch had a blood alcohol level three times the legal limit on the night of the crash.

An Arkansas family re-homes two of its three adopted daughters when the girls' disruptive behavior causes the people to fear for their own safety.

Actress Leah Remini reveals in an exclusive interview with ABC News "20/20" how Tom Cruise was one of the factors that led her to break from the Church of Scientology. "Being critical of Tom Cruise is being critical of Scientology itself… you are evil," Remini told ABC's Dan Harris in a new promotional clip from the interview. Remini, 45, describes how she and her family joined the Church when she was a young girl, built a successful acting career in Hollywood while being a diligent Scientologist, and how she eventually decided to sever ties with the Church."As time goes on, you start to lose touch with the real world. The mindset becomes ‘Us against them,'" Remini said. "The decision to leave is you are giving up everything you have ever known and everything you have worked for your whole life." The actress also details her 30-year association with the Church in her new memoir, "Troublemaker: Surviving Hollywood and Scientology." "I feel that people need to understand this has been my whole life," Remini said "I want them to understand how it happens."

Angelika Graswald, accused of killing her fiance during a kayak trip on the Hudson River, discusses the case while behind bars; the 911 call and interrogation video; interviews with two of Graswald's friends; legal roundtable and a kayak expert.

Terrorist attacks on Paris

Barbara Walters interviews candidate for GOP nomination Donald Trump, his wife, Melania, and his children.

Mother and daughter reunion after 50 years, an unbelieveable injustice

Dalia Dippolito, whose conviction for hiring a hitman to kill her husband was overturned, tells her side of the story.

The Searchers: An investigative genealogist helps an army veteran, whose twins disappeared from his life in Korea more than 40 years earlier, find his children.

Former CIA agent Michele Assad and her husband, Joe, plan the evacuation of 560 Iraqi Christian refugees who have been displaced by ISIS.

20/20 secrets and hazards from some very common businesses.

Man Discovers His Entire Life Has Been a Lie; Con Woman Linked to 50-Year-Old Mystery

Sixteen-year-old Skylar Neese disappeared after she snuck out of her West Virginia home in 2012. Investigators later learned that two of her friends had stabbed her to death.

Investigative Genealogist Reconnects Lost Family Members; Why Did Chris McCandless Go 'Into the Wild'?

Confessions of a Burglar, Pilot, Hairstylist, Doctor and Window Washers

The latest on the Cleveland kidnap victims and the Jodi Arias verdict

ABCNews' Barbara Walters explores the upcoming royal baby.

Personal Assistants, House Managers, Nannies, Butlers

From demon visions to alleged infidelity: Inside an unbelievable murder case.

Born into one of Kentucky's great political dynasties, Steve Nunn was meant to take the reins of power; instead, he fell into the depth of alcohol, sex and a touch of rage that would lead to revenge and murder.

The last person to see Sheena alive, her fiancé Joe Genoese, speaks with 20/20's David Muir

Dharun Ravi, convicted of a hate crime, speaks exclusively to Chris Cuomo.

Does winning a lottery jackpot really buy happiness?

Yvonne Stern survived three hits put out by her husband's ex-mistress.

A look at the unbelievable world of modern air travel.

From '50 Shades of Grey' to open marriages, what's going on with sex these days?

Meet the wildly gifted and tragically desperate who come to Sunset Boulevard.

From an ex-HR exec to a porn-star-turned mom, confessions you won't believe.

Who lets children ride bulls, drive monster trucks? Meet some unusual parents.

Meet a teen who hates sound, a woman who eats rocks and more.

They say good fences make good neighbors. But what about video cameras and the internet?

Stories of people who took matters into their own hands to right a wrong.

A champion gymnasts stunning secret, a brides unbelievable deception and more.

Author Rielle Hunter discusses her upcoming memoir and her relationship with former Democratic presidential candidate John Edwards.

What does it take to raise a mega family?

Chimpanzee mauls student in South Africa; Wild animals popping up in human habitats.

Teacher Caught Having Group Sex; Silly and Shocking School Pranks; When Student Discipline Goes Far

Going to Extremes: $65M to Marry My Daughter; Extreme Plastic Surgery.

Meet the teen who took on the popular coach, helping convict him of sexual abuse.

Insider Secrets at Restaurants and with Airplane Food.

A look back at the events of 2012.

Why did high school outcast Christine Paolilla, who was transformed from an ugly duckling into "Miss Irresistible," turn on the very girls who made her popular? On a hot, quiet July 2003 afternoon, four recent high school graduates, including Paolilla's two best friends and the most popular girls in school, Rachael Koloroutis and Tiffany Rowell, were gunned down at Tiffany's home in a Houston, Texas suburb. Police were baffled by the murders, which were seemingly random. But as police dug deeper in an investigation that dragged on for three years, they discovered that the killer might be closer to home than anyone ever expected. Was Christine Paolilla responsible for murdering Rachael, Tiffany and two others?

In his first interview since the tragic shootings at the Safeway in Tucson, Arizona, Capt. Mark Kelly sits down one-on-one with Diane Sawyer to offer an intimate portrait of a modern American love story, and to talk about a great national tragedy and finding the strength to heal. Their emotional conversation took place one week after the tragic shooting.

Who killed a popular school nurse and beloved mother of five from a picture postcard New England town on Mother's Day, 2009? Newly divorced Stacey Burns was viciously murdered in her bedroom, her body discovered by her two oldest kids. Could ex-husband and the father of her children, Ed Burns, have had a motive after going through a bitter divorce. Did her ex-boyfriend, Jim Vittum, have one after a recent break up? Or did someone else play a role in the murder? A year and a half later, New Hampshire State Police still have many questions left to be answered.

They started out like any kids, full of hope and dreams - but now they're homeless and in terrible danger of slipping between the cracks. These kids are not living under a bridge, but under the radar -- part of a new under-reported type of homelessness -- surfing from couch to couch, from the beds of friends to the beds of strangers. For over a year, Chris Cuomo and his team have chronicled the terrors and triumphs of four such teenagers, all surviving largely on their own.

One Family's Desperate Attempt to Survive Nine Brutal Winter Days Lost In the Oregon Wilderness, with Little Food and Surrounded by Black Bears.

Lisa Nowak has been to outer space, but that's nothing compared to the trip she took from Houston to Orlando. It was a bizarre story that made national headlines: decorated astronaut and national hero Lisa Nowak drove 900 miles through five states to confront her ex's new girlfriend, Air Force Captain Colleen Shipman, in a deserted dark Orlando airport parking lot. Why did Nowak have a knife, bb gun, mallet, pepper spray and diapers with her? What was her plan?

Did Michele MacNeill, a former beauty queen and mother of eight, really die of natural causes after falling unconscious in the bathtub, as her husband, Martin, suspected and police concluded? The medical examiner originally ruled death by natural causes, but is there more to this tragedy than meets the eye? Could Martin, a well-established local doctor, have been responsible, as his daughters Alexis and Rachel allege?

Canning questions Sheen on his controversial remarks and his public feud with the CBS comedy's creator, Chuck Lorre, which resulted in the hit show's suspension, as well as his notorious headline-making actions.

Carmina Salcido was just three when her father, Ramon, a hard working, hard drinking vineyard employee, went on a killing spree, taking the lives of seven people, including her mother, two sisters, grandmother and two young aunts, plus a vineyard supervisor. According to the doctors who saved her life, Carmina's survival was nothing short of a miracle.

Is a television show and its main character giving some viewers the idea to act on dark thoughts? ABC News Correspondent Jay Schadler reports on two murders which may have been inspired by the hit TV crime show "Dexter." Schadler travels to Rising Sun, Indiana to interview Andrew Conley, who was convicted of killing his younger brother, Conner, and to Edmonton, Alberta in Canada, where Mark Twitchell is currently on trial for the murder of John Altinger. Twitchell, a filmmaker who made a short film about a fictional murder in a garage, is alleged to have returned to the garage to commit murder for real. It's alleged that his movie script may have been a template for an actual homicide.

It was a case that stumped police: who beat Inna Budnystka, a young, blond cruise line worker in a Florida hotel, snuck her out of the hotel and left her for dead in a deserted cul-de-sac? Surveillance cameras captured her entering the elevator at the Miami hotel where she'd been staying, but she was never seen leaving again. When she regained consciousness, her statements to police were contradictory and confusing.

Former Chicago Bears star player Shaun Gayle speaks for the first time about the murder of his pregnant girlfriend and unborn child, gunned down at close range in 2007 by a woman who was secretly obsessed with him.

With home videos and rarely seen photographs from their childhoods and interviews with friends and Royal insiders, viewers are sure to learn things they never knew about the couple and their courtship.

Elton John and his partner, David Furnish, will sit down with Barbara Walters for their first major U.S. Television interview since the birth of their son, Zachary, this past Christmas. In the interview, John and Furnish will discuss why they wanted a child, how they kept the baby a huge secret until he was born, and how fatherhood has changed them both. They will also introduce Walters to Zachary, their four-and-a-half-month old son.

How do you survive the emotional and physical scars of an explosive plane crash? Popular mommy-blogger Stephanie Nielson and her husband, Christian, recall in excruciating detail their story, from surviving the actual small Cesna plane crash, engulfed in flames, to their painful and long recovery, to how Stephanie overcame her depression and learned to be a mom again to children who did not recognize her.

The days when the infomercial was a feature of only late-night TV viewing for insomniacs are long gone. Today infomercials are on 24 hours a day, seven days a week, and offer a diversity of products for all tastes. In fact, the explosion and expansion of infomercial products has transcended TV, and these products are now on store shelves nationwide. But how often does "too good to be true" ring true for infomercials? Who is watching - and buying -- the products that are being hawked by everyone from celebrities, fitness fanatics and other high-profile names? What's the next big thing? And what happens when you become an "infomercial addict"?

Private Channing Moss was on patrol in Iraq with members of his platoon from the 10th Mountain Division from Ft. Drum, NY when he was struck by an RPG that lodged in his lower abdomen -- but didn't explode. The soldiers' rulebook dictates, in this rare incident, that the wounded soldier should be moved aside and made as comfortable as possible, but that the lives of others should not be risked to save his life. A series of tough calls - all against the rules - then ensued.

It's decision time for Senator John Edwards - will he enter a plea deal or will he be indicted by the Justice Department for allegedly violating campaign law? We now know the former Presidential hopeful lied about his affair and the child he had with Rielle Hunter, but did he misuse hundreds of thousands of dollars to cover up the affair?

In the cutthroat world of beauty pageants, where competition is fierce and the hint of scandal can cost you your crown, Blair Griffith was hiding something very personal. Last October Blair was crowned Miss Colorado in the Miss USA Pageant - the next shot was at the national title. But before her bags were even packed for the competition, a knock on the door upended her life. Her family, broke, was being evicted.

From being scammed on dating sites to sites dedicated to showcasing the gruesome, 20/20 reports on the growing number of people victimized online and how cyber acts can lead to very real, life altering damage. Cuomo and a team of cyber experts break down how cyber villains operate and how people can avoid falling victim.

For 26 years it was a secret... what happened to the missing baby of infamous murderer Diane Downs, whisked away from the hospital just after birth, never to be heard from again. And with that kind of past, what kind of the future would she have? No one knew what became of this innocent child until now. Rebecca Babcock, born of a killer, talked to 20/20 about being the seed of a monster and how that legacy has shaped her life.

Millions of viewers watched Diane Sawyer's landmark interview with Jaycee Dugard, who was kidnapped at age 11 on her way to school and held captive for the next 18 years, during which time she was repeatedly abused and gave birth to two daughters. Many of those viewers filled the ABC News message boards with remarks about her survival and resilience. Now Chris Cuomo takes a closer look at Dugard's healing process, which includes a special horse therapy that has been an essential part of her treatment.

Superpowers are usually associated with action superheroes like Superman or Batman. And right now, from movies like "Captain America" to weekly fan conventions across the country, superheroes are bigger than ever. ABC invites viewers to meet some real people with superpowers that they've developed by dedicating their lives to the basic human urge to overcome limitations, to soar by unlocking abilities hidden deep within.

What happens to a family when a child's birth becomes a medical mystery? Barbara Walters reports on Kaylee Halko and Lindsay Ratcliffe, two vibrant young girls who suffer from a rapid-aging disease called progeria, a fatal condition that currently affects 80 known children in the world. The disease causes children to age at 10 times the normal rate. It is incredibly rare - occurring in only one of every four to eight million births - and always fatal. On average, children die at the age of 13.

There are an estimated six million hoarders in the United States - and while they suffer tremendously from the effects of this mysterious and devastating mental illness, their families also suffer along with them. In fact children of hoarders often spend a lifetime feeling ashamed, trapped and traumatized by the conditions of their home. In an eye-opening report, 20/20 looks at the children of hoarders, who come clean about the shame, resentment and lifelong secrets of growing up in such conditions.

Was it an accident or a suicide attempt at 80 mph on a highway that shattered one life and killed two other innocent people? Justine Winter was a 16-year-old straight-A student with a bright future. But one night, while breaking up with her boyfriend, she texted him that she wanted to end her life. Just a few minutes later, her car collided with a car carrying Erin Thompson and Erin's 13-year-old son, Caden. Both were killed instantly, yet somehow Justine survived and was charged as an adult with two counts of homicide. But was it? Did she deliberately kill a mother and her son, or did something else happen that night?

It was the "puff" seen around the world: 13 million people watched a YouTube video of two-year-old Aldi, an Indonesian boy, puffing hungrily on cigarette after cigarette with his family looking on. But while many viewed the video with amusement and perhaps some shock, 20/20 traveled to Indonesia to find that Aldi is just the tip of the iceberg, just part of a much larger story.

It was like a modern-day tale of Romeo and Juliet: A 14-year-old girl and 19-year-old boy fell madly in love, despite a parent's objection. But what happened next - a series of events that resulted in the murder of one of their mothers - was far from the ending of the Shakespeare play.

Everyone from stay-at-home moms to entrepreneurs, musicians and comedians are creating a new or second career and earning income by posting videos on YouTube. No longer do you need an agent or manager to launch a singing career or to publish a book. No longer do you need a company behind you to sell your ideas, products or how-to knowledge. Six years ago YouTube.com launched on the web and revolutionized video sharing. What began as a simple idea -- allowing anyone to upload and view videos, for free -- quickly transformed into a platform that connected the world. Now YouTube encompasses everything from how-to videos to entertainment, self expression, business and citizen journalism.

In the final hours before the verdict in the appeal trial of Amanda Knox, the now 24-year-old American convicted in 2009 with two others of murdering her roommate, Elizabeth Vargas reports the very latest bombshells in court from Perugia, Italy. For the past week in an underground medieval courtroom, the closing arguments in Knox's appeal have been unfolding before a jury of two judges, six jurors and a worldwide audience of millions. The proceedings have been intense - the prosecution showing images of the fatal wounds to the victim, Knox's former roommate Meredith Kercher; the defense insisting that the young American is herself a victim of shoddy police work and an overzealous prosecution. As Amanda and her family wait for word that could mean freedom, or a life sentence, Vargas, who has been covering the story from the beginning, reveals never-before-seen letters from Knox to her family, new interviews and access to the investigation, and uncovers details about the prosecutor's questionable past and motives.

In February 2008, 14-year old Brandon McInerney and 15-year old Lawrence King sat a row apart in 8th grade English. Just days before Valentine's Day, Brandon brought a gun to middle school and shot and killed Larry in front of his classmates. The unanswered question remains, why?

For the first time since Bernie Madoff was arrested almost three years ago for orchestrating the biggest ponzi scheme in American history, bilking investors of billions of dollars, a Madoff family member breaks her silence and reveals never-before-heard family secrets. In an exclusive television interview, Stephanie Madoff Mack, widow of Bernie's son, Mark Madoff, who took his own life two years to the day after his father's arrest, speaks candidly and emotionally to ABC News Anchor Chris Cuomo about marrying into one of New York's most powerful families, living through the public humiliation of Bernie Madoff's financial crimes and coping with her husband's suicide. She also reveals for the first time a letter Bernie Madoff sent to her from prison after her husband's suicide.

Michael Jackson's death on June 25, 2009 stunned the world. To many, the fact that his personal physician, cardiologist Conrad Murray, was right by his side - being paid $150,000 a month to watch over a sleep deprived Jackson six nights a week - was also shocking. Now a jury must decide if Murray was negligent, ultimately responsible for Jackson's death.