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Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.
S1, EP18 "Town Path Predator"
How an extensive investigation and revolutionary science of familial DNA revealed an attacker's identity.
S2, EP11 "The Murder Mystery of Mary London"
In 1981 a young woman is found murdered on the side of the road; who killed her remains a mystery for decades until law enforcement can utilize genetic genealogy to crack the case.
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, EP2 "Sacrilege in Sacramento"
In Sacramento, three women are assaulted by the same man; investigators use genealogy technology to track down the suspect.
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.
