He has been linked to several other cold cases, some in Southern California or outside the state. The Zodiac also claimed to have murdered thirty-seven victims. His known attacks took place in Benicia, Vallejo, unincorporated Napa County, and the city of San Francisco proper. He targeted young couples and a lone male cab driver.

The Zodiac murdered five known victims in the San Francisco Bay Area between December 1968 and October 1969, operating in rural, urban and suburban settings. The case has been described as the most famous unsolved murder case in American history and has become both a fixture of popular culture and a focus for efforts by amateur detectives.

The Zodiac Killer is the pseudonym of an unidentified serial killer who operated in Northern California in the late 1960s.