
Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.
A young woman is found beaten to death in Wisconsin in 1984; killer evades detection for decades until a revolutionary DNA method reveals his identity.
When a woman is found dead in her home, detectives are left with more questions than answers.
A woman out for a walk is attacked and sexually assaulted by an unknown assailant; 14 years later, police trace a family tree using genetic genealogy and find the rapist.
In 1974, a 5-year-old girl disappears while walking to her friend's house; 46 years later, detectives are able to put the case to rest using modern DNA technology.