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

A 60-year-old pharmacist is strangled and sexually assaulted in her home; almost 50 years later her killer is tracked down using genetic genealogy.

In 1998, a 12-year-old girl and a 38-year-old woman are found raped and murdered.

A woman storms out of a restaurant after an argument with her husband and is never seen alive again.

In 1987, the body of a 17-year-old girl is found face down on a rural road; she had been raped and strangled.