The Ciphers of the Zodiac Killer

The Ciphers of the Zodiac Killer
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The NCM welcomes David Oranchak, an expert in the Zodiac Killer cryptograms! The Zodiac, a serial killer in California, rose to fame in 1969 by sending his own ciphers to newspapers to publish for the whole world to know what he had done. Have they all been solved?
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