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

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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.

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.