
Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.
In 1976, Leslie Penrod Harris storms out of a restaurant after an argument with her husband; hours later, her naked body is found near El Toro Air Base 20 miles away.
Investigative genetic genealogy unmasks the sexual deviant who raped and killed Christina Castiglione in 1983.
In 1994, 42-year-old Le Bich-Thuy is found dead next to her home; decades later, DNA and genealogy technology allow detectives to track down the killer.
Following the decadeslong investigation into the murder of Helene Pruszynski.