Who Was the Zodiac Killer? Suspects and Theories
5 Zodiac Killer Theories You Should Know After Watching The Most Dangerous Animal of All
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Much of the case against Sullivan boils down to how closely he matches descriptions of the Zodiac. He sported a buzz cut, glasses, and favoured military style clothing, as well as boots like the one that left a print at the Lake Berryessa stabbings. There was also suspicion that he was connected to a Zodiac-esque murder that occurred in 1966. His coworkers at the college near where the body of Cheri Jo Bates was found said that he made them uncomfortable, and that he disappeared for days after the murder. A letter confessing to her murder was sent to The Press-Enterprise — before the Zodiac killings officially began, which rules out any copycat theories. Sullivan was explored as a suspect on the History Channel's The Hunt for the Zodiac Killer.
Compared to other suspects, there is relatively little known about Sullivan, and there's no record of him being called in for questioning in relation to the Zodiac killings.