This Cold Case Still Haunts California… And It’s Still Unsolved

If you’re interested in exploring more cases like this, check out Audible. You can get a free audiobook plus a 30-day trial using the link below, and it’s a great way to support the channel at the same time: https://amzn.to/4mvHleb In the late 1960s, residents of Northern California were put on edge following a string of unsolved murders that mostly targeted young couples. These random acts of violence were soon attributed to The Zodiac Killer, an unidentified individual who went on to send odd cyphers and cryptic messages to the press following the crimes. Although decades have passed and a dozen potential suspect names have been put forward, as of February 2026, the Zodiac Killer remains nameless. 00:00 Introduction 01:05 The Murders 08:08 Letters to the Media 12:27 Arthur Allen 17:56 The Aftermath Check out our Patreon for rewards and to aid the work our channel does! Each and every bit of support we receive is truly appreciated by everyone on the team. If you're able to support us, you can find us on patreon at: https://www.patreon.com/coldcasedetective Join us as we investigate individual true crime cases on the CCD podcast. Spotify: https://open.spotify.com/show/5CTs6p0E8NUP8aBaabVlqs Itunes: https://podcasts.apple.com/gb/podcast/coldcasedetective/id1507935359 Google Podcasts: https://podcasts.google.com/?feed=aHR0cHM6Ly9mZWVkcy5idXp6c3Byb3V0LmNvbS85ODg5MTgucnNz RSS Feed: https://feeds.buzzsprout.com/988918.rss If you would like us to research a specific case, or have a personal connection to a case, you can fill out our Cold Case form below and we will do our best to conduct an investigation into the case: https://forms.gle/Vq2F69HTxE1nbwc37 Social Media: Instagram: https://www.instagram.com/coldcasedetective/?hl=en Twitter: https://twitter.com/ccdetective Cold Case Detective was created by TJ Ruesch and the team behind Top5s & DestinationDeclassified. Our aim is to educate and spread awareness on some of the most puzzling missing person cases in history... This is Cold Case Detective, shutting the blinds on unsolved mysteries as we seek to heat up another...