An unidentified serial killer known as "Zodiac" killed at least five people and wounded two others in Northern California between December 1968 and October 1969, taunting police and press with letters and ciphers. The case remains unsolved despite thousands of proposed suspects and decades of investigation.
Arthur Leigh Allen Driver's License (cropped) — Credit: State of California · Public domain
Between December 1968 and October 1969, an unidentified assailant who came to be known as "Zodiac" carried out a series of attacks in the San Francisco Bay Area. Investigators agree on seven confirmed victims of assault, five of whom died. David Arthur Faraday and Betty Lou Jensen were shot and killed on December 20, 1968, on Lake Herman Road in Benicia. Michael Renault Mageau and Darlene Elizabeth Ferrin were shot in the early hours of July 5, 1969, in a park in Vallejo; Mageau survived, but Ferrin died. Bryan Calvin Hartnell and Cecelia Ann Shepard were stabbed on September 27, 1969, at Lake Berryessa in Napa County; Hartnell survived, but Shepard died two days later. Taxicab driver Paul Lee Stine was shot and killed on October 11, 1969, in the Presidio Heights neighborhood of San Francisco.
The perpetrator adopted the "Zodiac" name in a series of letters sent to regional newspapers, threatening further violence if the letters were not published, and claiming his victims were being collected as slaves for an afterlife. Some letters contained ciphers; of four produced, two remain unsolved, while two others were solved in 1969 and 2020 respectively. In his final confirmed letter, sent in 1974, the writer claimed responsibility for thirty-seven killings, a figure investigators have not corroborated. He also suggested a connection to the unsolved 1966 murder of Cheri Jo Bates in Riverside, though this link has never been proven.
No one has ever been arrested or charged in connection with the murders. The only suspect ever publicly named by police was Arthur Leigh Allen, a former elementary school teacher and convicted child molester who died in 1992. Allen was the subject of extensive investigation, but his fingerprints and handwriting could not be definitively matched to the Zodiac, and a partial DNA profile obtained in the early 2000s did not match him.
Over the following decades, numerous additional private researchers, journalists, and independent groups have proposed other suspects, including Earl Van Best Jr., Gary Francis Poste, Giuseppe Bevilacqua, Lawrence Kane, Paul Doerr, Richard Gaikowski, Richard Marshall, and Ross Sullivan, among others. None of these theories has resulted in an arrest or official confirmation by law enforcement, and several have been publicly disputed or discredited by investigators, researchers, or forensic examiners. Other publicly known individuals, including Charles Manson's associates, Ted Bundy, David Carpenter ("the Trailside Killer"), and Ted Kaczynski, were investigated and ruled out based on alibi, fingerprint, or handwriting evidence.
As of the most recent reporting, the case remains open, with the FBI stating there is "no new information to report." The killer's identity remains unknown.
Paul Lee Stine, Cecelia Ann Shepard, Michael Renault Mageau, David Arthur Faraday, Bryan Calvin Hartnell, Betty Lou Jensen, Darlene Elizabeth Ferrin
Date
1960s
Location
San Francisco Bay Area, California (multiple crime scenes including Benicia, Vallejo, Napa County, and San Francisco)
Case status
unsolved
Case timeline
1966
Cheri Jo Bates is murdered in Riverside, California; a possible but unproven connection to the Zodiac has been suggested.
1968-12-20
David Arthur Faraday and Betty Lou Jensen are shot and killed on Lake Herman Road in Benicia.
1969-07-05
Michael Renault Mageau and Darlene Elizabeth Ferrin are shot in Vallejo; Mageau survives, Ferrin dies.
1969-09-27
Bryan Calvin Hartnell and Cecelia Ann Shepard are stabbed at Lake Berryessa in Napa County.
1969-09-29
Cecelia Ann Shepard dies of injuries from the Lake Berryessa attack.
1969-10-11
Paul Lee Stine is shot and killed in the Presidio Heights neighborhood of San Francisco.
1974
The last confirmed Zodiac letter is sent, claiming responsibility for thirty-seven killings.
1992-08
Suspect Arthur Leigh Allen, the only person publicly named by police, dies.
2020
One of the Zodiac's ciphers is solved, decades after its original transmission.
2021
The independent group Case Breakers publicly names Gary Francis Poste as a suspect; the FBI states the case remains open with no new information.
Best coverage
Titles and descriptions are the creators’ own and may not reflect current legal status; see the dossier above for sourced case facts.
VIDEO
The Casual Criminalist / 2 hr 46 min
The Zodiac: Cracking the Code of a Serial Killer
VIDEO
Kendall Rae / 30 min
Zodiac Killer: Still Unsolved!
VIDEO
Bailey Sarian / 1 hr 1 min
The ONLY Zodiac Killer Theory That Makes Sense
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Kendall Rae / 1 hr 4 min
The Zodiac Killer “Identified”?! Who is Gary Poste?
People
Paul Lee Stine
VICTIM
Taxicab driver shot and killed October 11, 1969, in Presidio Heights, San Francisco.
Cecelia Ann Shepard
VICTIM
Stabbed September 27, 1969, at Lake Berryessa; died September 29, 1969.
Michael Renault Mageau
VICTIM
Shot and survived the July 1969 Blue Rock Springs Park attack.
David Arthur Faraday
VICTIM
Shot and killed on December 20, 1968, on Lake Herman Road in Benicia.
Arthur Leigh Allen
LAW ENFORCEMENT
The only suspect ever publicly named by police; a former elementary school teacher and convicted child molester who was investigated but never arrested or charged. Died in 1992.
Bryan Calvin Hartnell
VICTIM
Stabbed and survived the September 1969 Lake Berryessa attack.
Betty Lou Jensen
VICTIM
Shot and killed on December 20, 1968, on Lake Herman Road in Benicia.
Darlene Elizabeth Ferrin
VICTIM
Shot and killed near midnight July 4-5, 1969, at Blue Rock Springs Park, Vallejo.
Roles reflect public records and court outcomes at the time of writing — supporting citations are on file under Sources.
Archival records
other document
Zodiac-Killer
Credit: San Francisco Police Department · Public domain · Source
unclassified
Arthur Leigh Allen Driver's License
Credit: State of California · Public domain · Source
other document
Arthur Leigh Allen Driver's License (cropped)
Credit: State of California · Public domain · Source
An unidentified serial killer known as "Zodiac" killed at least five people and wounded two others in Northern California between December 1968 and October 1969, taunting police and press with letters and ciphers. The case remains unsolved despite thousands of proposed suspects and decades of investigation.
Where did the crime happen?
San Francisco Bay Area, California (multiple crime scenes including Benicia, Vallejo, Napa County, and San Francisco).
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