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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, EP13 "Gunpoint Horror"

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.

S2, EP3 "The Montana Murders"

A young couple is murdered in Montana in 1956; in 2019, investigators use voluntary genealogical databases to catch the killer.

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, EP1 "Deadly Desire"

Police in Southern California were called to a particularly violent murder scene; advances in forensic genealogy finally solved the case.

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.

Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.
Original Air Date: Apr 23, 2020
Genres: DocuseriesTV Series
Rating: TV14
Playback: HD
4 seasons available on demand
Available on

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