
Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.

Detectives work for decades to identify the remains of two women and find their killer.

The science of familial DNA is used to identify a rapist who eluded justice for years.

In 1999, hospital worker Jennifer Watkins is sexually assaulted and murdered; 20 years later, revolutionary DNA testing helps to solve the cold case.

In 2018, a 79-year-old woman in Utah is sexually assaulted after a man breaks into her home; genetic genealogy immediately identifies the rapist.