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Bloodline Detectives
Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.
S2, EP18 "Cuyahoga Falls Mystery"
In Ohio in December 1987, the nude body of 17-year-old Barbara Blatnik is found face down on a rural road; she had been raped and strangled.
S1, EP13 "Llandarcy Serial Killer"
In 1973, two young girls are found murdered in the Welsh village of Llandarcy; the killer's identity remains a mystery until 2002.
S2, EP17 "Justice for Leslie"
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.
S3, EP4 "Last Seen at Dairy Queen"
In 1979, Kim Bryant's body is discovered in the Las Vegas desert; it takes law enforcement 40 years to name her killer.
S4, EP20 "Murder in Marietta"
The 1972 rape and murder of 9-year-old Debbie Lynn Randall is solved thanks to new science - 50 years later.
S4, EP19 "The Sadistic Killer"
Investigative genetic genealogy unmasks the sexual deviant who raped and killed Christina Castiglione in 1983.
S4, EP18 "Carrie's Courage"
A woman who was sexually assaulted at gunpoint in the 1980s contacts a genetic genealogist to solve her case.
S4, EP17 "Murder in Apartment 101"
In 2022, investigative genetic genealogy exposes a killer who stabbed a woman to death in her home in 1980.