Why did they call him the zodiac killer: 59 Photos

Why Is He Called the Zodiac Killer? A Recap of the Serial Killers  Murdering Spree

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Arthur Leigh Allen was the most likely suspect in the Zodiac case, but there was not enough physical evidence to prove his guilt. The circumstantial evidence and fear in the community led to Allen being falsely identified as the killer. The identity of the Zodiac Killer remains a mystery, and the case is still open.
It's never been determined why the killer gave himself that name, but the press soon started calling him “The Zodiac Killer.” One of the most chilling characteristics of the Zodiac Killer was the string of letters with cryptograms and taunts he sent to newspapers.
To begin with, the killer was known as the Whitechapel Murderer however, a taunting letter was sent to the police station and the writer claimed to be the infamous serial killer – they signed the note with the name Jack the Ripper, sparking the name change.
According to The San Francisco Gate, the only people who absolutely saw the Zodiac Killer's face were three teenagers who witnessed him kill taxi driver Paul Stine—and those teenagers were inside of a house at least 50 feet from the cab where the murder occurred, and could only see the killer when his face was briefly ...