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

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.

In Alexandria, Va., in 2016, a young female lifeguard is raped while working at a local pool; police soon learn of a similar incident in Fairfax.

On June 11, 1963, a man fishing in Oregon reels in the body of a toddler; the child had been wrapped in blankets and weighed down by iron molds.