This Serial Killer Used Secret Codes to Terrorize an Entire City

Title: Zodiac Killer: The Coded Letter to Police — Deciphering the Cipher Description: One of the most chilling puzzles in American true crime history: the Zodiac Killer’s cryptic coded letters sent to police and newspapers. In this video we take a deep dive into the infamous cipher — where it came from, how investigators and amateur sleuths have tried to crack it, what (if anything) it reveals about the killer, and why this piece of paper still haunts detectives and codebreakers today. What you’ll see in this video: • A brief background on the Zodiac case and its victims • A close look at the specific coded letter (structure, symbols, handwriting) • Step-by-step analysis of decoding attempts — from amateur solutions to professional cryptanalysis • What the cipher did and did not reveal about the Zodiac’s identity • The cultural impact: why the cipher became a media sensation and a magnet for copycats and conspiracy theories • Responsible discussion of suspects and why the case remains controversial This video is for historical and investigative interest only — we neither glorify violence nor sensationalize victims. If you’re new to the Zodiac case, this is a clear, source-driven primer on one of the most confounding cryptograms in modern criminal history. 🔔 Subscribe for more deep dives into unsolved cases, forensic decoding, and true crime investigations. 👍 Like the video if you enjoyed the breakdown, and comment below with your thoughts — do you think the cipher hides the killer’s name?