Latest / Case Cracked / Ep 57 — Family Tree Trap: The Genealogy Upload That Caught the Golden State Killer
Transcript
- HOST: The killer left DNA at crime scenes for decades, but the clue that finally cornered him wasn’t in a police file. It was hiding in a family tree. [SFX: scary whoosh] HOST: Tonight’s case takes us to California, where one offender was known by three names: the Visalia Ransacker, the East Area Rapist, and the Original Night Stalker. HOST: Between 1974 and 1986, investigators linked him to at least 13 murders, more than 50 rapes, and over 100 burglaries. HOST: He attacked, vanished, and stayed invisible for more than 40 years. HOST: But DNA survived. HOST: Detectives had crime-scene genetic material. What they didn’t have was a match in CODIS, the traditional law enforcement DNA database. HOST: So in 2018, investigators tried something newer: investigative genetic genealogy. HOST: They uploaded a DNA profile to GEDmatch, a public genealogy site where users searched for relatives. [AD_BREAK:1] HOST: The result wasn’t a flashing neon arrow that said, “Here’s your killer.” It was distant cousins. HOST: But distant cousins can still build a map. HOST: Genealogists worked backward through birth certificates, marriage records, obituaries, and family lines. They built trees. They crossed out branches. They narrowed the suspect pool by age, geography, and opportunity. HOST: Eventually, one name rose to the top: Joseph James DeAngelo, a former police officer living in Citrus Heights. [SFX: surprise sting] HOST: Yes. A former cop. HOST: Investigators watched him. Then they collected DNA he threw away, including a tissue from his trash. HOST: That discarded sample matched the crime-scene DNA. HOST: The man who had terrorized California suburbs had been identified by relatives he’d never met. [AD_BREAK:2] HOST: DeAngelo was arrested on April 24, 2018. In 2020, he pleaded guilty to multiple murders and admitted dozens of assaults as part of a plea deal. HOST: He received life in prison without parole. HOST: This case changed criminal investigations. It also sparked fierce debate about privacy, consent, and what happens when your DNA can point to someone else. HOST: But for survivors and victims’ families, the breakthrough meant one thing: the mystery finally had a name. HOST: The clue wasn’t a fingerprint, a confession, or a witness. It was ancestry, turned into evidence.