What if the key to solving a 40-year-old murder mystery was hidden in the DNA of a killer's third cousin, who simply wanted to build a family tree? For decades, the Golden State Killer terrorized California, leaving a trail of cold cases that stumped investigators. Then, in 2018, a revolutionary new technique blew the case wide open, leading them right to his door.
This is the story of forensic genealogy—a powerful and controversial tool that turns public ancestry websites into a vast genetic lineup. In this episode, we break down the exact science of how investigators build a suspect's family tree from a single drop of blood or saliva. We'll explore the incredible detective work that solved an "unsolvable" case, but we'll also ask the tough questions: Did you and your relatives consent to this? And in our quest for justice, how much genetic privacy are we willing to give up?
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27 分