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Speculative theory
Zodiac KillerAtlas
Crime & Trafficking · Serial killers
The Zodiac Killer is described in reference sources as an unidentified serial killer associated with a series of murders in Northern California. A University of Maryland forensic expert has been publicly associated with a team that reported a possible identification of the Zodiac Killer.
Open the caseDocumented6
- Documented · Archival compilation footage from the late 1960s documents contemporary public attention to the Zodiac crimes and investigation.
- Documented · Mainstream news outlets covered Stewart’s book as an alleged unmasking rather than an officially settled identification.
- Documented · Multiple books and media projects have offered competing decipherments, suspect theories, and psychological readings of the Zodiac case.
- Documented · Reference summaries state that the Zodiac Killer is directly linked to five confirmed murders.
- Documented · The case is widely associated with taunting correspondence and ciphers attributed to the killer.
- Documented · The Zodiac Killer is described in reference sources as an unidentified serial killer associated with a series of murders in Northern California.
Contested3
- Contested · A University of Maryland forensic expert has been publicly associated with a team that reported a possible identification of the Zodiac Killer.
- Contested · Author Gary L. Stewart published a book claiming that his father was the Zodiac Killer.
- Contested · Some commentators have framed elements of the Zodiac narrative as mythologized or open to challenge rather than fully settled history.