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.

Meet the man behind "Avatar: Fire and Ash," director James Cameron, who reveals what unlikely personal experiences inspired the "Avatar" film phenomenon.

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

Country's biggest stars, including Kenny Chesney, take us on an unforgettable journey through Nashville's legendary stages from the neon-lit Broadway bars to the iconic Grand Ole Opry.

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.

Take a look behind the scenes at the beloved sitcom's enduring impact on TV and culture, including interviews with Sheryl Lee Ralph, Kelly Ripa and former guest stars George Clooney and Mario Lopez.

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 candid and intimate conversation with Michelle Obama about the evolution of her style, the power of fashion and inspiring students working to make their own marks on fashion.

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

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

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

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

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

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

Celebrate seven decades of the magic, joy and innovation behind Disneyland and its iconic attractions.

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

A spotlight on Robert Redford's life and career reveals details about the actor and Oscar-winning filmmaker's legacy and most beloved films.

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

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

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

A Massachusetts jury found Karen Read not guilty of murdering her Boston police officer boyfriend in 2022, nearly a year after her first prosecution ended in a mistrial.

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.

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

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.

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

Live reporting from the Vatican as the world celebrates the first American Pope.

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

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

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. 

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.

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

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. 

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? 

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.

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

Robin Roberts interviews Oscar nominees Cynthia Erivo and Jesse Eisenberg, and spotlights many of this year's high-profile nominees, including actresses Demi Moore, Zoe Saldana and Mikey Madison, as well as actor Timothee Chalamet and more.

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 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.

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 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.

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.

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

Muir will be the only journalist to fly with the California Department of Forestry and Fire Protection to survey the destruction and will be joined by correspondents and reporters from across the frontlines, covering the latest developments as these powerful fires continue to ravage the city.

Chief national correspondent Matt Gutman, correspondent and ABC News Live anchor Kayna Whitworth, correspondents Mola Lenghi and Matt Rivers, and KABC meteorologist Leslie Lopez will report up-to-the-minute updates on the ground and interview people impacted most by the devastating fires that have changed both lives and a city in an instant.

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