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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.

"Bloodline Detectives"

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

S2, EP19 "Chilling Notes From a Killer"

In 1988, Janet Tinsley reports her 8-year-old daughter April missing after she fails to return home; three days later, a man out jogging makes a gruesome discovery in a nearby ditch.

S2, EP7 "The Murder of Siobhan McGuinness"

In 1974, a 5-year-old girl disappears while walking to her friend's house; 46 years later, detectives are able to put the case to rest using modern DNA technology.

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.

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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