Inside The Tragic Stories Of The Zodiac Killer’s Victims — And The Mystery Of How Many People He Murdered

Published October 13, 2025
Updated October 14, 2025

Bryan Hartnell And Cecelia Shepard

Cecelia Shepard

Find A GraveCecelia Shepard, the fourth known victim murdered by the Zodiac Killer.

The next victims of the Zodiac Killer were attacked on Sept. 27, 1969. Then, 20-year-old Bryan Hartnell and 22-year-old Cecelia Shepard, both students at Pacific Union College, were picnicking at Lake Berryessa, near Napa.

During their picnic, they were approached by a man wearing a black hood and sunglasses. As Hartnell later told the police, the stranger claimed he was an escaped convict who needed money and a new car in order to escape to Mexico. But the stranger didn’t accept their offers of money, and then he stated: “I don’t want the money, all I want to do is kill [you].”

The Zodiac Killer tied Shepard and Hartnell up with plastic clothesline, then proceeded to stab them with a knife multiple times — Shepard was stabbed at least 10 times, and Hartnell was stabbed six times. Shepard succumbed to her injuries at the hospital, while Hartnell ultimately survived.

By that point, the police knew there was a serial killer in Northern California. In fact, he’d even given himself a name. In addition to the chilling messages he sent to police, the killer had also sent letters to local newspapers that August, in which he identified himself as “Zodiac.” He had also signed a letter to the San Francisco Chronicle on July 31, 1969, with a cross-circle symbol.

Police found that same symbol painted on Hartnell’s car, along with the dates of the other Zodiac Killer victims’ murders.

Bryan Hartnell's Car

Public DomainThe Zodiac Killer left the dates of his murders on Bryan Hartnell’s car door.

The murderer seemed to be escalating — fast. But before long, the final known Zodiac Killer victim was slaughtered.

author
Kaleena Fraga
author
A senior staff writer for All That's Interesting since 2021 and co-host of the History Uncovered Podcast, Kaleena Fraga graduated with a dual degree in American History and French Language and Literature from Oberlin College. She previously ran the presidential history blog History First, and has had work published in The Washington Post, Gastro Obscura, and elsewhere. She has published more than 1,200 pieces on topics including history and archaeology. She is based in Brooklyn, New York.
editor
Jaclyn Anglis
editor
Based in Brooklyn, New York, Jaclyn Anglis is the senior managing editor at All That's Interesting, where she has worked since 2019. She holds a Master's degree in journalism from the City University of New York and a dual Bachelor's degree in English writing and history from DePauw University. In a career that spans 11 years, she has also worked with the New York Daily News, Bustle, and Bauer Xcel Media. Her interests include American history, true crime, modern history, and science.
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Fraga, Kaleena. "Inside The Tragic Stories Of The Zodiac Killer’s Victims — And The Mystery Of How Many People He Murdered." AllThatsInteresting.com, October 13, 2025, https://allthatsinteresting.com/zodiac-killer-victims. Accessed October 24, 2025.