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

A seven-year-old girl is kidnapped and raped, but it takes almost 20 years for her assailant to be caught.

In 1987, Terry Wood finds his wife Roxanne dead; genetic genealogy pinpoints her killer 35 years later.

A lorry driver is found dead behind the wheel in Camberley, England; police use a revolutionary technique of familial DNA analysis.

The police investigation into the Washoe County murder.