The Zodiac Killer terrorized Northern California in the late 1960s and taunted police and newspapers with cryptic, cipher-laden letters, and forty years later his identity is still unconfirmed. Crime writer Aphrodite Jones goes back through that unresolved case, weighing the false leads, the competing suspects, and the conspiracy theories that have accumulated around the killings and the letters. She also addresses how Hollywood dramatizations of the case have blurred with the documented evidence, separating what investigators actually found from what later films and books added. The film works as a case review rather than a new investigation: it retraces the known timeline of murders and correspondence and lays out where the record runs out and speculation begins. Jones frames the killer's continued anonymity as the real subject, more than the crimes themselves, since it is the unanswered question that has kept the case alive in the public imagination for decades. There is no reveal here, only a clearer map of what is known, what is guessed, and what remains genuinely open.