The Zodiac Killer's Game: Decoding His Infamous Cipher

What Two Former Detectives See in the Zodiac’s Letters! On August 1, 1969, three Northern California newspapers received mysterious letters that would transform a local murder investigation into a national obsession. The letters connected two previous attacks in the Vallejo area and introduced the Zodiac killer, providing specific details only the murderer could know, along with a threatening cipher. Upon publication, the cipher was decoded by a high school teacher and his wife, revealing the killer's chilling manifesto. This episode recounts the early crimes and the intense public and police scrutiny that followed, setting the stage for the Zodiac's reign of terror. 00:00 A Normal Morning in San Francisco 00:49 The Zodiac Killer's First Letters 00:53 Revisiting the Murders 02:01 The Chilling Phone Call 02:51 Families in Limbo 04:12 A Summer of Fear 04:53 The Killer's Letters Arrive 05:49 The Zodiac's Confession 07:33 The Enigmatic Cipher 11:54 The Newspapers' Dilemma 15:35 Chief Stiltz's Challenge 17:12 The Zodiac's Response 22:47 The Hardens Crack the Code 26:19 The Chilling Message 30:37 The Aftermath and Debate 33:45 Remembering the Victims 36:08 The Zodiac's Legacy 37:20 Next Episode Teaser 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.