Nine Zodiac Killer Suspects And The Disturbing Stories Behind Them

Published December 13, 2022
Updated October 23, 2024

Earl Van Best Jr.: The Zodiac Killer Suspect Who Was Accused By His Son

Was Earl Van Best Jr The Zodiac Killer

San Francisco ChronicleA San Francisco Chronicle photo of Earl Van Best Jr. from coverage of his statutory rape trial.

When author Gary Stewart was asked about his thoughts on the Zodiac Killer’s identity, he had a curious response. In his 2014 book The Most Dangerous Animal of All, Stewart alleged that the mysterious murderer had been his biological father, a man named Earl Van Best Jr.

Stewart, who grew up with adoptive parents, was inspired to learn more about his biological father after his biological mother reached out. Van Best had eloped with Stewart’s mother when he was about 27 and she was just 14, and, according to History, later served time for statutory rape. But that’s not why Stewart thought that his father was the infamous murderer.

As SF Gate reports, Stewart learned that Van Best liked ciphers and the opera — especially The Mikado, which the Zodiac referenced in his letters. What’s more, an expert said that he had similar handwriting to the Zodiac.

Gary Stewart

TwitterGary Stewart thinks that his biological father could be the Zodiac Killer.

Stewart also believed that his father and the Zodiac shared animosity toward the same journalist. San Francisco Chronicle reporter Paul Avery reported on the Zodiac, and received a Halloween card allegedly from the killer that read: “Peek a boo! You’re doomed. From your secret pal.” Avery happened to be the same reporter who’d covered Van Best’s statutory rape trial.

But though Stewart’s book promised to solve the mystery of the Zodiac Killer’s identity, critics found his methods lacking. As executive producer Ross Dinerstein and director Kief Davidson started to develop The Most Dangerous Animal of All into a documentary series, their private detective said that Van Best’s handwriting, fingerprints, and DNA didn’t match the Zodiac’s and that Van Best had been in Europe during the killer’s spree.

Still, Dinerstein is keeping an open mind about the Zodiac Killer’s identity. “I don’t think we’re ever going to know who the Zodiac Killer is,” he told Vulture. “I would be surprised if Earl Van Best Jr. is the Zodiac, but I also wouldn’t be surprised if Earl Van Best Jr. was involved or had some connection to it.”

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 22, 2025.