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.

When a young mother disappears, authorities dive for clues and answers in a muddy creek.

The episode delves into the details of the crime, the investigation, and the subsequent trials. It also explores the brothers' childhood, their relationship with their parents, and the factors that may have led them to commit such a heinous act.

A flower delivery turns deadly, when a young woman is fatally shot at her front door.

A woman 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.

A heart-pounding body-camera video captures moments after a firefighter is gunned down.

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.

Officers race to find a kidnapped woman, not knowing that saving her would lead to the capture of a serial killer.

JonBenét Ramsey's father speaks about what he thinks police can do right now to identify her killer. Can new technology solve this crime?

A college teen vanishes while home on winter break. Will messages on his social media help his family's personal search?

The discovery of a backyard burial leads police to a killer's arrest.

A famed real estate developer, Gary Triano, 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.

The investigation into a multimillion-dollar con in a close-knit community helps investigators uncover the murder of a young father.

A new interview with Gabby Petito's parents reveals what we haven't heard before about the case.

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

David Muir investigates how cutting-edge forensic DNA technology has led to long-awaited justice in two murder cases that remained unsolved for decades.

Two women shot while asleep in their home – one miraculously survives to tell her story.

The death of Kari Baker, a Texas minister's wife, left a church community shocked and her family convinced it was foul play.

Newly obtained investigative files provide fresh insight into one of New England's most notorious mysteries, which unfolded after Nathan Carman and his mother Linda Carman took a fateful fishing trip in 2016. Was it lost at sea...or was it murder?

A beloved celebrity hairstylist is found murdered in his own home in 2017. Was it a burglary gone wrong or something more sinister? His family searches for justice and answers. Who killed Fabio?

When Abraham Shakespeare wins $30 million in the Florida lottery in 2006, he is generous with his winnings, helping friends, family, and strangers. But three years after his windfall, Shakespeare mysteriously vanishes. Police begin an investigation, and there is no shortage of possible suspects.