In 2012, Toni Henthorn is hiking in the Rocky Mountains with her husband, Harold, to celebrate their twelfth wedding anniversary. Tragedy strikes when she falls from a 160-foot cliff. Is it a terrible accident or something more sinister?
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Willing to kill for just $20 and drugs, Joshua Gardner commits his first murder at 24. Even behind bars, he can't contain his rage, brutally beating a fellow inmate to death.
Having committed over 27 assaults on correctional officers, Billy Tracy is one of the most violent offenders on death row.
The installation of a CCTV system caught a twisted killer who was using his position as a healthcare worker to secretly kill patients.
Matthew Hoffman was a seemingly ordinary tree trimmer in the sleepy town of Mount Vernon, Ohio, but he concealed an obsession with trees and a brutally violent side.
Derrick Todd Lee, known as the Baton Rouge Serial Killer, terrorized Louisiana from 1992 to 2003, eluding capture for years. Eventually, advanced DNA testing would help police close the net.
Forensic pathologist Dr. Richard Shepherd investigates the murder of Lesley Potter in Mumbles, Wales. Lesley was strangled by her husband Derek, who then hanged her to make it look like death by suicide.
Forensic pathologist Dr. Richard Shepherd investigates the murder of author Helen Bailey by her fiance Ian Stewart. He also investigates the murder of Stewart's first wife, Diane Stewart, which was discovered following his trial for Helen's killing.
Michelle Wyatt is found strangled to death in 1980. Few leads arise until 41 years later, thanks to forensics.
This episode follows the exhaustive investigation into the murder of Tangie Simms and how genetic genealogy helped solve the crime.
The case follows the investigation into the murder of Le Bich Thuy and how the killer was finally identified.
"Motorway Killer" is the story of a random killing and how police used the revolutionary science of familial DNA to solve the crime.
A community in Utah is shocked when an elderly woman is attacked in her own home and fight to solve the case.
"Blood Bath" is the harrowing story of Melanie Road's murder, how police never gave up hope and with the help of familial DNA tracked down her killer.
Using the I-45 Interstate as a hunting ground, William Reece committed rapes and murders for over a decade.
Detectives in Houston, Texas search for a killer with an everyday job and a signature method. Though he evades capture for years, it's an in-the-family atrocity that brings him to justice.
Profiles include a woman who murdered her own father and stepmother for money.
A women, along with her boyfriend, is convicted in the fatal shooting of four people at the Witchduck Inn.
A profile of a woman who was convicted of murdering her adoptive grandmother. Then, a woman shot a teen after losing money playing a game.
An abandoned vehicle is discovered with the bodies of four victims inside. With no clear motive, only hidden cameras can expose the killer. In the UK, Alice Ruggles is found murdered, and suspicion lands on her stalker ex-boyfriend.
Two women are killed, and all evidence suggests their husbands are involved with their untimely deaths.
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