Nine Zodiac Killer Suspects And The Disturbing Stories Behind Them

Published December 13, 2022
Updated October 23, 2024

Ross Sullivan: A Notorious Suspect In The Death Of Cheri Jo Bates

Was Ross Sullivan The Zodiac Killer

TwitterSome believe that Ross Sullivan has a strong link to possible Zodiac victim Cheri Jo Bates.

There are a couple of reasons why some believe that Ross Sullivan was the Zodiac Killer. But the most compelling has to do with the murder of Cheri Jo Bates, who some consider a potential Zodiac victim, in 1966.

Then, on Halloween, Bates’ body was discovered on the Riverside City College campus, where the 18-year-old had just started her freshman year. According to Voigt’s Zodiac Killer website, she had been beaten and stabbed.

Sullivan was one of the original suspects in Bates’ murder. He worked at the campus library, which was close to where the body was found, and several of his coworkers at the library remembered that he made them uneasy. He even briefly disappeared after Bates’ death.

Cheri Jo Bates

TwitterCheri Jo Bates was just 18 when she was murdered, possibly by the Zodiac Killer.

Though Bates isn’t considered an official Zodiac victim, her murder has struck many as eerily similar to the Zodiac Killer’s crimes. Bustle reports that local newspapers received letters after Bates’ death with details only her killer would know, and that these letters bore a resemblance to the Zodiac Killer’s letters (including word usage and misspellings).

What’s more, Sullivan’s possible connection to Bates isn’t the only reason why some think that he’s a convincing Zodiac Killer suspect. Sullivan studied cryptology, wore army boots (similar to prints that were found at a Zodiac crime scene), and with his thick spectacles, he bore a strong resemblance to the Zodiac Killer.

Today, however, Sullivan’s whereabouts are unknown. And since Bates is not officially considered a Zodiac victim by the police — though she is by some experts like Voigt and the Case Breakers — her murder might not have anything to do with the Zodiac Killer or his mysterious identity.

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. "Nine Zodiac Killer Suspects And The Disturbing Stories Behind Them." AllThatsInteresting.com, December 13, 2022, https://allthatsinteresting.com/who-was-the-zodiac-killer. Accessed July 16, 2025.