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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.
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, EP8 "Cold Case Twist"
A woman out for a walk is attacked and sexually assaulted by an unknown assailant; 14 years later, police trace a family tree using genetic genealogy and find the rapist.
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.
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.
