The Zodiac Killer's Z340 cipher was one of the most infamous unsolved puzzles in true crime history. For over fifty years, it taunted codebreakers, cryptographers, and enthusiasts around the world. In this episode, we explore how, in December 2020, a trio of experts—David Oranchak, Jarl Van Eycke, and Sam Blake—finally cracked the code using modern technology and brilliant teamwork. We delve into the incredible journey of breakthroughs, false starts, and the ultimate discovery of the chilling message behind the cipher. Tune in to uncover how this enduring mystery was finally solved, revealing a rare glimpse into the Zodiac's twisted mind.

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