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

In 1997, a woman is attacked on her route home; a suspect is arrested over 20 years later with the help of a genetic genealogical search.

In 1974, a 5-year-old girl disappears while walking to her friend's house; after 46 years, detectives are able to put the case to rest using modern DNA technology.

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.