In 1999, hospital worker Jennifer Watkins was sexually assaulted and murdered. Two decades later, revolutionary DNA testing helps to solve this cold case.

In 1992, a woman is sexually assaulted in Sacramento, California by a man wearing a ski mask. This sexual predator continues to commit heinous crimes until new evidence exposes his identity.

When two teens are found dead in Montana, detectives suspect an infamous gangster might be responsible. But it will take 65 years to find the true culprit.

A small community in Utah is shocked when an elderly woman is brutally attacked in her own home. Detectives use innovative techniques to solve the case.

After decades of searching, Ohio detectives use ground-breaking technology to hunt down the man who abducted and sexually assaulted a 19-year-old woman.

In 1997, two women are sexually assaulted in separate attacks. Forensic evidence suggests the crimes are linked, but it takes over two decades to find the perpetrator.

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On 24th December 1984, a body is discovered in a shallow grave. When another dead body is discovered police fear a serial killer is at work. The victims remained unidentified for decades before a new DNA technology gave them justice.

When a woman takes a genealogy test to learn what happened to her estranged mother, she is shocked to learn that her DNA has helped law enforcement identify a Jane Doe and identify the murderer of 4 other victims.

In 1981, a female high school student is found dead on the side of a road. Police work tirelessly on the case until new DNA technology exposes the killer.

In 1995, a masked man commits a series of sexual assaults at knifepoint. It takes more than 20 years for this serial rapist to be identified and then brought to justice.

In Alexandria, Virginia in 2016 a young female lifeguard is raped while working at a local pool. Police learn of a similar incident in Fairfax, Virginia 2 years earlier. It takes ground-breaking genealogy tools to find the perpetrator.

In 1968, 60-year-old Gwen Miller is brutally raped and murdered inside her own home. A devastating flood then halts the police investigation until ground-breaking science offers some new hope.

In 1998, a woman and her daughter are found brutally murdered, both shot in the head several times. The case goes cold for over a decade until genetic genealogy uncovers the perpetrator.

In 1976, a young woman is found dead at a military base in Orange County, California. Using forensic genealogy, experts break open the 40-year-old cold case.

In December 1987, the nude body of a 17-year-old girl was dumped on the side of a rural road in Ohio. She had been raped and strangled to death. Genetic genealogy is called upon to help solve this violent murder.

In 1988, Janet Tinsley reports her 8-year-old daughter April missing after she fails to return home. Three days later, a man out jogging makes a gruesome discovery in a nearby ditch.

In 1963, the body of a toddler is discovered in the Keene Creek reservoir in Ashland County, Oregon, wrapped in a bundle of bedding. The child is determined to a white male, possibly having Down Syndrome. Despite the limitations of forensic science at the time, investigators are determined to find out who the so-called "Boy in the Bundle" is, and how he ended up in the water. After nearly six decades, developments in technology provide a major break in the case.