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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.
S1, EP11 "Rockville Horror"
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.
S1, EP17 "The Murder of Helene Pruszynski"
Following the decadeslong investigation into the murder of Helene Pruszynski.
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.
S3, EP3 "Carla's Last Valentine's"
Carla Walker is raped and killed on Valentine's Day, 1974, leading to a cold case that takes 46 years to crack.
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.