David Carpenter: The Trailside Killer (Part 1)

Morbid

04/14/25

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62m

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Throughout the 1960s and 70s, from Los Angeles to San Francisco, Californians were terrorized by multiple killers including notorious serial killers like the Zodiac Killer, the Hillside Stranglers, Herbert Mullin, and Ed Kemper. While the decade may have ended with these killers disappearing or apprehended, the threat of violence and murder simply moved north.

Though less known than his contemporaries, David Carpenter was no less prolific and frightening a killer than those men mentioned above. Nicknamed “The Trailside Killer” by the press, Carpenter terrorized Point Reyes and Santa Cruz County for a decade, assaulting, kidnapping, and killing at least eight people, but he was suspected of more. Like those other killers, Carpenter had a long history of violent and antisocial behavior going back to his childhood, including multiple arrests and incarcerations. How was it that a man with such an alarming history of violence could go uncaught for a decade?

Thank you to the Incredible Dave White of Bring Me the Axe Podcast for research and Writing support!

References

Associated Press. 1980. "Trail Killer will strike again." Santa Cruz Sentinel, December 1: 1.

Burkhardt, Bill. 1979. "Woman found murdered on Mt. Tam." San Francisco Examiner, August 21: 1.

Graysmith, Robert. 1990. The Sleeping Lady: The Trailside Murders Above the Golden Gate. New York, NY: Onyx.

Keraghosian, Greg. 2020. "'Do not hike alone': For 21 months, the Trailside Killer terrorized Bay Area's outdoors." San Francisco Chronicle, October 25.

Leader, Lewis. 1980. "Identification ends dad's long quest." San Francisco Examiner, December 2: 2.

San Francisco Examiner. 1960. "MP's shots foil attack on woman." San Francisco Examiner, July 13: 1.

—. 1961. "Presidio attacker gets 14 yrs." San Francisco Examiner, March 10: 11.

—. 1960. "Sex case insanity plea." San Francisco Examiner, October 8: 5.

Santa Cruz Sentinel. 1970. "Boulder Creek girl attacked." Santa Cruz Sentinel, January 29: 22.

—. 1970. "Grand jury indicts con." Santa Cruz Sentinel, July 17: 7.

—. 1970. "SLV kidnap suspect flees Calaveras jail." Santa Cruz Sentinel, April 27: 1.

The People v. Carpenter. 1997. S004654 (Superior Court of Los Angeles County, April 28).

The People vs. David Carpenter. 1999. S006547 (Superior Court of San Diego County, November 29).

Todd, John. 1980. "Tam closed in hunt for clues." San Francisco Examiner, October 16: 1.

Cowritten by Alaina Urquhart, Ash Kelley & Dave White (Since 10/2022)

Produced & Edited by Mikie Sirois (Since 2023)

Research by Dave White (Since 10/2022), Alaina Urquhart & Ash Kelley

Listener Correspondence & Collaboration by Debra Lally

Listener Tale Video Edited by Aidan McElman (Since 6/2025)

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Previous Episode

The Exorcism of Roland Doe

April 10, 2025

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69m

In the winter of 1973, director William Friedkin released his iconic horror classic The Exorcist, a film that has shocked and terrified audiences for more than fifty years. Based on William Peter Blatty’s novel of the same name, The Exorcist tells the story of a young girl who becomes possessed by a demonic entity, and the two Catholic priests who attempt to exorcise the demon. Even more terrifying than the content of the film, however, was the fact that The Exorcist was supposedly based on a true story.

William Peter Blatty had always stated The Exorcist was based on a supposedly true story he’d heard while at Georgetown University. According to Blatty, a Maryland boy, known as “Roland Doe,” had become possessed by a demonic entity and, among other things, underwent a negative personality change and began exhibiting impossible abilities including an ability to speak Latin. It was only through the dedication of one Jesuit priest that the boy was eventually freed of his possession and went on to live a normal life.

Since the release of both the novel and the film in the 1970s, a great deal more has been learned about “Roland Doe” and the supposedly true story that inspired The Exorcist, raising many questions about the veracity of the original claims. Who was “Roland Doe,” and was he truly possessed by a demon, or just the intense emotions of an adolescent boy?

Thank you to the Incredible Dave White of Bring Me the Axe Podcast for research and Writing support!

References

Allen, Thomas. 1993. Possessed: The True Story of the Most Famous Exorcism of Modern Time. New York, NY: Doubleday.

Associated Press. 1949. "'Evil spirit' cast out of 14-yearf-old." The Bee (Danville, Virginia), August 10: 8.

McGuire, John M. 2005. "Priest was last of three who did 1949 exorcism." St. Louis Post-Dispatch, March 3: A1.

News and Observer. 1964. "Tar Heel develops space ceramics." News and Observer (Raleigh, NC), September 3: 27.

Nickell, Joe. 2001. "Exorcism!: Driving Out the Nonsense." Skeptical Inquirer 20-24.

Opsasnick, Mark. 1999. "The haunted boy of Cottage City, the cold hard facts behind the story that Inspired The Exorcist." Strange Magazine.

Young, Maya. 2010. Boy whose case inspired The Exorcist is named by US magazine. December 20. Accessed March 17, 2025. https://www.theguardian.com/us-news/2021/dec/20/the-exorcist-boy-named-magazine.

Cowritten by Alaina Urquhart, Ash Kelley & Dave White (Since 10/2022)

Produced & Edited by Mikie Sirois (Since 2023)

Research by Dave White (Since 10/2022), Alaina Urquhart & Ash Kelley

Listener Correspondence & Collaboration by Debra Lally

Listener Tale Video Edited by Aidan McElman (Since 6/2025)

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Next Episode

David Carpenter: The Trailside Killer (Part 2)

April 17, 2025

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49m