In October 2021, Christina Parcell was found stabbed to death in her South Carolina home. When authorities arrived, they found a gruesome scene: Christina's body in a pool of blood with 36 stab wounds and mysterious rose petals strewn throughout the home. Police begin looking for a killer and set their sights on those closest to Christina, including her fiancé and her young daughter's father, with whom she had a contentious custody battle, though both were later found not to be the killer. But when a Ring doorbell camera captures an image of a man riding a bicycle and then entering Christina's home around the time of her murder, it leads them to a courtroom confession that no one saw coming. 

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.