20 baffling forensic cases that stumped everyone
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The Zodiac Killer
The Zodiac Killer murdered a number of people in the San Francisco Bay area in the 1960s and early 1970s and has never been caught – but not for lack of forensic evidence. Zodiac, as he called himself, left behind fingerprints and handprints at his crime scenes and on the taunting letters he sent to law enforcement. The text of the letters, themselves provided forensic evidence as well. And while several people have claimed to be the Zodiac, they don’t match the forensic evidence from the killings.