In the late 1960s, Northern California was haunted by a shadow known only as the Zodiac Killer. He stalked young couples, taunted the press, and dared police to catch him—sending ciphers, threats, and even a piece of a victim’s shirt. Officially linked to five murders but claiming thirty-seven, Zodiac left behind fear, confusion, and one of the most chilling mysteries in true crime history. In this episode, we unravel the murders, the letters, and the suspects that continue to keep the Zodiac’s name alive… and we ask the terrifying question: could he still be out there?