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

Advances in forensic science shine a light on a case that went cold for decades, revealing the name of a serial killer who murdered two women in the late 1980s in Orange County, Calif.

In 1990, a Mississippi woman is kidnapped and raped at knifepoint; the case goes cold for decades until a DNA match from an unrelated crime identifies the perpetrator.

In 1972, a young woman is found covered in blood by the road in Snohomish County, WA.

In 1980, an Ohio man finds his wife lying in a pool of blood after she had been stabbed by an unknown killer.