The Zodiac Killer: California's Most Notorious Serial Killer

Between 1968 and 1969, the Zodiac Killer terrorized Northern California with brutal murders and cryptic letters to newspapers. The case remains unsolved.

THE CONFIRMED VICTIMS:

• December 20, 1968: Betty Lou Jensen and David Faraday
• July 4, 1969: Darlene Ferrin killed, Michael Mageau survived
• September 27, 1969: Cecelia Shepard killed, Bryan Hartnell survived
• October 11, 1969: Paul Stine, taxi driver, shot in head

THE CIPHERS:

• 408-Symbol Cipher: Solved in 1969 by Donald and Bettye Harden
• 340-Symbol Cipher: Remained unsolved for 51 years, decoded in December 2020
• Z13 and Z32: Still unsolved

PRIME SUSPECTS: Arthur Leigh Allen was the most investigated suspect. DNA did not match. Gary Francis Poste was named in 2021 by a private investigation team.

Despite decades of investigation, the identity of the Zodiac Killer remains one of criminology's greatest mysteries.

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