Case File

The Doodler: San Francisco's Unsolved Serial Killer

DNA evidence and a living suspect offer new hope in a decades-old case that terrorized the city's gay community

🇺🇸 American

Published June 6, 2025

A sketch of a man’s face pinned to a bulletin board in a San Francisco police station, surrounded by faded 1970s crime scene photos and notes, hinting at the hunt for the elusive "Doodler" serial killer
EVIDENCE

Quick Facts

Perpetrator(s)Unknown — nicknamed 'The Doodler'
Victim(s)Gerald Cavanagh, Joseph 'Jae' Stevens, Klaus Christmann, Frederick Capin, Harald Gullberg, Warren Andrews
Crime sceneSan Francisco, California, USA (Ocean Beach, Golden Gate Park, Land's End, Lincoln Park)
Date of crimeJanuary 1974 – September 1975
Type of crimeSerial murder

Between January 1974 and September 1975, an unidentified serial killer stalked San Francisco's gay nightlife, claiming the lives of at least six men and wounding three others. The perpetrator became known as the Doodler—a chilling nickname derived from his habit of sketching victims before attacking them, sometimes claiming to be a cartoonist working on designs in diners and bars.

The victims were predominantly white males who encountered the killer at gay venues in neighborhoods like the Castro and Tenderloin. They were stabbed repeatedly, with wounds on both front and back of their bodies, often exhibiting defensive injuries from desperate resistance. Among the confirmed victims was Gerald Earl Cavanagh, a 49-year-old Canadian-American immigrant found stabbed on Ocean Beach on January 27, 1974; Joseph "Jae" Stevens, a 27-year-old female impersonator and comedian whose body was discovered at Spreckels Lake in Golden Gate Park in June 1974; and Frederick Capin, a Navy veteran and Vietnam War vet from Port Angeles, Washington, found near Ocean Beach in May 1975 with a stab wound to his aorta.

The investigation initially stumbled, with police treating the killings as separate crimes until patterns emerged. Most victims were found in the Ocean Beach and Golden Gate Park areas, where the killer appeared to dispose of bodies with methodical brutality. The case gained notoriety and drew the attention of Inspector David Toschi, the legendary homicide detective known for his work on the Zodiac case.

Timeline

1 January 1974

Gerald Cavanagh found dead near Ocean Beach

In January 1974, Gerald Cavanagh is found near Ocean Beach in San Francisco. He is considered the first known victim in the case.

1 June 1974

Joseph 'Jae' Stevens and Klaus Christmann killed in 1974

During 1974, Joseph 'Jae' Stevens is killed in the Golden Gate Park area and Klaus Christmann is likewise found dead. The year is confirmed, exact dates not verified.

27 April 1975

Warren Andrews attacked at Land's End

On April 27, 1975, Warren Andrews is attacked at Land's End. He later dies of his injuries and is considered by SFPD to be the sixth murder victim.

12 May 1975

Frederick (Fred) Capin found dead

On May 12, 1975, Frederick Capin is found dead in San Francisco as another victim linked to the unidentified perpetrator.

4 June 1975

Harald Gullberg found dead

On June 4, 1975, Harald Gullberg is found dead. He is the fifth confirmed murder victim in the case of 'The Doodler'.

1 September 1975

Murder series ends — no perpetrator arrested

September 1975 marks the most widely source-supported end point of the known murder series. No perpetrator is identified or arrested.

1 January 2018

SFPD releases audio recording and updated composite sketches

As part of the active cold case investigation, SFPD releases an audio clip of a suspect along with an age-progression portrait and increases the reward in the case.

While detectives suspected the Doodler of up to 16 murders, only 5-6 were firmly linked by the San Francisco Police Department. The discrepancy reflects a grim reality of the era: the gay community's reluctance to cooperate with authorities, driven by pervasive homophobia and fear of exposure. Some victims likely went unidentified, their deaths never officially attributed to the serial killer.

The breakthrough came decades later when three survivors identified a living suspect in police lineups. One was a foreign diplomat who was stabbed six times in his own apartment after inviting the killer home; another was an entertainer. Despite these identifications, prosecutors lacked sufficient testimony to pursue charges—the survivors' understandable reluctance to participate in a public trial left the case in limbo.

In April 1975, Warren Andrews was assaulted at Land's End and left unconscious. He died weeks later, and the San Francisco Police Department officially linked his death to the Doodler in January 2023, designating him as the probable sixth victim.

The case has experienced renewed momentum in recent years. In 2020, authorities announced DNA evidence had been recovered and analyzed. In 2023, the SFPD released an age-progressed forensic sketch of what the suspect might look like today—now estimated to be around 70 years old, based on descriptions placing him as a Black male aged 19-25 in 1975, approximately 6 feet tall with a slender build. Simultaneously, the reward for information leading to the suspect's identification, apprehension, and conviction was increased to $250,000.

As of February 2026, the case remains open and unsolved. The Doodler represents a dark chapter in San Francisco's history and a cautionary tale about how institutional indifference and social stigma can allow predators to evade justice. Yet the presence of a living suspect, combined with modern DNA technology and substantial financial incentive, offers a glimmer of hope that one of America's most prolific unidentified serial killers may finally be brought to account.

**Sources:** https://en.wikipedia.org/wiki/Doodler https://listverse.com/2018/06/29/10-haunting-facts-of-the-doodler-of-san-francisco/ https://www.sanfranciscopolice.org/news/doodler-cold-case-investigation-update-23-009 https://www.aetv.com/articles/serial-killer-doodler-still-at-large

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