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

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 that remained a mystery for over 40 years.

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.

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

The body of a young girl is discovered strangled and shot; genetic genealogy is used to identify the victim and killer.