The Man With the Hammer: Gary Poste and the Zodiac Killer Theory Explained

In this episode, Simon and Tom examine one of the most controversial modern Zodiac Killer suspects: Gary Francis Poste. The story begins with a chilling moment—an elderly man, a simple question, and a violent response with a hammer. That moment would later fuel a nationwide media storm and reignite interest in a case that has remained unsolved for over 50 years. We break down the claims made by the Case Breakers, a team of former law enforcement and intelligence professionals who publicly named Poste as the Zodiac in 2021. Key areas explored in this episode: The hammer incident and the credibility of the sole witness Poste’s background: Air Force service, cryptography training, and life in the Bay Area during the Zodiac murders His move to Groveland, California in 1970—the same year the Zodiac killings stopped Allegations of violence, control, and disturbing behaviour reported by neighbours The forehead scars and how they compare to the Zodiac composite sketch The controversial cipher theory linking Poste’s name to the Zodiac’s coded messages The connection to the Cheri Jo Bates murder—and why police dispute it Claims of hidden weapons caches and a possible trained group of followers The ongoing mystery surrounding DNA evidence—and why it has never been conclusively compared We also examine strong criticism from leading Zodiac researchers, including Tom Voigt, and explore whether the Case Breakers’ evidence holds up under scrutiny. With no confirmed forensic link—no definitive DNA, fingerprints, or handwriting match—the case against Gary Poste remains entirely circumstantial. So why hasn’t law enforcement fully addressed it? And what happens when a suspect dies before answers are found? The Zodiac case remains officially open. And the question still stands: Was Gary Francis Poste the Zodiac Killer—or just another name in a long list of suspects? 🎙️ This episode sets up our next instalment, where Simon and Tom critically review the Gary Poste theory in detail. Zodiac Killer, Gary Francis Poste, Zodiac suspect, Case Breakers, true crime podcast, unsolved murders, serial killers, Cheri Jo Bates, Zodiac ciphers, cold case, forensic investigation, true crime UK, true crime US, criminal psychology, unsolved mysteries  About Crime Time Inc. Season 5 of Crime Time Inc. broadens its reach across two sides of the Atlantic. This season features cases from Scotland and across the wider UK — rooted in real investigative experience — alongside deep dives into some of the most infamous murder cases in American history. Hosted by former detectives Simon and Tom, with experience in both the UK and the United States, including time working alongside the FBI, the show strips away sensationalism to explain how crime and justice really work. Two crime worlds. One podcast. New episodes released regularly throughout the season. Our Website: https://crimetimeinc.com/ If you like this show please leave a review. It really helps us. Please help us improve our Podcast by completing this survey. http://bit.ly/crimetimeinc-survey Hosted on Acast. See acast.com/privacy for more information.