Forensic files sign of the zodiac: 59 Photos
Forensic Files Sign of the Zodiac (TV Episode
FAQs
First letters from the Zodiac. The Zodiac's letters, sent at least from 1969 to 1974, often started with This is the Zodiac speaking and signed with a symbol resembling the crosshairs of a gunsight: . He sent out four cryptograms, or ciphers; two have been solved, one in 1969 and one in 2020.
The true identity of the Zodiac killer has never been confirmed by law enforcement, though several suspects have been identified over the years.
He coined his name in a series of taunting messages that he mailed to regional newspapers, in which he threatened killing sprees and bombings if they were not printed. Some of the letters included cryptograms, or ciphers, in which the killer claimed that he was collecting his victims as slaves for the afterlife.
Z 408 cipher. It was solved by a North Salinas schoolteacher Donald Harden and his wife Bettye. The Zodiac killer split this cipher into three pieces and sent it to two newspapers.