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Suspects receiving major media and/or law enforcement attention.
Allen is the most popular suspect in the case --most likely due to the publicity given him from two true crime novels. "Zodiac" and "Zodiac Unmasked" detail the evidence and logic pointing author Robert Graysmith's suspect. Read more...
Rick Marshall was another suspect further developed by former San Francisco Chronicle cartoonist Robert Graysmith.Read more...
Jack Tarrance became a suspect when his stepson, Dennis Kaufman was watching a television profile of the Zodiac Case. Kaufman found many similarities between the Zodiac killer and Jack Tarrance. Tarrance also looked strikingly similar to the composite sketches of the Zodiac Killer. Read more...
Robert Tarbox purchased a full page ad in the Oct. 17, 2007 edition of the Vallejo Times. Tarbox, 80 years old as of this writing, is a former attorney who once resided in Vallejo, CA Read more...
Bruce Davis was a Manson family member convicted in the murders of musician Gary Hinman and former stuntman Donald "Shorty" Shea. Read more...
Gareth Penn's accused Harvard-educated architect Michael O'Hare,a professor at UC Berkeley's Goldman School of Public Policy, of being the Zodiac Killer
Gareth Penn was born January 1, 1941 in Carmel, CA is an American author and, in his own words, a "medievalist, artillery surveyor, free lance writer, economic researcher, reference librarian, and receptionist in a robot factory."
Less publicized suspects.
Persons who have "confessed" to being the Zodiac Killer.