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

A woman takes a genealogy test to learn what happened to her estranged mother and is shocked to learn her DNA helped law enforcement identify a Jane Doe that remained a mystery for decades.

In 1998, the bodies of Megan and Sherri Scherer were found lifeless in their sitting room in Portageville, Mo.; both had been shot in the head several times.

In 1968 in South Dakota, 60-year-old pharmacist Gwen Miller is found dead -- but the case goes cold and remains so for decades.

In August 1977, the body of a young girl is discovered by blackberry pickers in Everett, Wash.; she had been strangled and shot, and investigators launched a two-tiered investigation.