The Zodiac Killer 2023 Guide: Decades of Murder and Research
Marin, Shannon V. / Betts, Sandy
In his 1986 book, the author Robert Graysmith speculated that Zodiac continued to kill long after a near arrest in San Francisco in 1969, but this was a divisive idea. An alternate view, apparently popular in law enforcement, was that Zodiac's murders preceded or overlapped with those of an unrelated killer hunting girls and young women in the Greater San Francisco Bay Area. The Santa Rosa Hitchhiker Murders were a core part of this theory. In...