In the US, a man desperately calls the police for help after he is attacked. Police work to crack the case using security footage and phone tracking. In the UK, a dog lover is found murdered in her rural home.
In the US, a sister tracks down her brother's killer by becoming an amateur sleuth, and in the UK, CCTV is the main witness to identify the killer of a mother of four.
Mark Arthur wanted to control his wife Heather's every move, even tracking her phone. When she met another man, he lost control.
Stewart Weldon was a career criminal operating in plain sight with convictions for kidnapping, burglary and sexual assault. It would take a routine traffic stop for the darkest depths of Weldon's crimes to be revealed.
The installation of a CCTV system caught a twisted killer who was using his position as a healthcare worker to secretly kill patients.
A woman is found chained up in a shipping container and for detectives, it's only the tip of the iceberg.
In 1979, 16-year-old Kim Bryant disappears from outside a Dairy Queen in Las Vegas. Three weeks later, her body is found: she had been sexually assaulted and bludgeoned to death. 40 years later, genetic genealogy finally names the killer.
Michelle Wyatt is found strangled to death in 1980. Few leads arise until 41 years later, thanks to forensics.
A young woman out jogging is attacked and viciously raped at knifepoint. The perpetrator continues his reign of terror by raping another five times over the next nine years.
Genetic genealogy brings answers to the families of two little girls who were murdered in 1986 in Tacoma, WA.
Steven McDowell refused to accept that his marriage to Crystal was over. When she disappeared during a hurricane, efforts to uncover foul play were hampered.
Remorseless murderer Casey Pigge's main ambition is to be the ultimate serial killer. If unrestrained, he remains a deadly threat.
Nothing was going to stop Ricky Dubose from breaking free of prison. Whilst being transported on a bus between facilities, he killed two correctional officers before escaping - and going on the run.
James 'Porky' O'Rourke's addiction to violence means he is one of the most feared men in the UK prison system.
The installation of a CCTV system caught a twisted killer who was using his position as a healthcare worker to secretly kill patients.
Richard Beasley, the Craigslist Killer, lured desperate job seekers to the woods with promises of employment at his fictional ranch.
For decades, detectives in Washington search for the perpetrator behind three unsolved murder cases. Finally, they can match DNA to a suspect. But "he" doesn't exist anymore.
In 1999, hospital worker Jennifer Watkins is sexually assaulted and murdered. 20 years later, revolutionary DNA testing helps to solve the cold case.
A killer evades justice for the murder of Diana Hanson for 38 years until genetic genealogy can identify him.
Michelle Wyatt is found strangled to death in 1980. Few leads arise until 41 years later, thanks to forensics.