More than 50 years after the Zodiac Killer mysteriously vanished, his crimes and letters still haunt the world.

The Zodiac Killer conducted a campaign of terror in the late 1960s, killing seven victims before taunting investigators through a series of cryptic letters, clues and coded messages sent to local newspapers.

For more than five decades, investigators have searched for the identity of the Zodiac Killer. Hoaxes and forged letters fueled an ongoing media circus while the mystery inspired TV documentaries, feature films, books, websites, podcasts, and even copycat killers.

This compelling biography is written by Michael Butterfield, a writer and researcher who has been investigating the Zodiac case for more than 30 years. He separates fact from fiction and lays out what we know about the crimes, the mysteries and the theories surrounding the case, its legacy in popular culture, and where the investigation stands today.

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