Michael Cole
The Zodiac Revisited
A three-volume examination of the Zodiac case: the facts, the evidence, and an analysis of the killer’s crimes and communications.
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Putting the Zodiac in Perspective
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The Zodiac Revisited — Book Trailer
An introduction to the three-volume series.
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Zodiac Cipher Generator
Turn your own message into a cipher using the Zodiac 340 or 408 presets, or customize the settings.
Featured research
Ten Days of
Count Marco
The Count Marco columns preceding the July 1974 “Red Phantom” letter, brought together with Michael Cole’s analysis of what may have prompted it.
Read the introduction, follow the ten columns in date order, and finish with the conclusions.
Read the complete seriesMore from the research library
The “My Name Is” cipher
The newspaper context and Michael Cole’s proposed interpretation.
Read the background →Paul Stine: A Victim of Opportunity
Contributor Michael Kelleher examines Paul Stine’s final journey.
Read the article →Celestial navigation
Michael Cole’s 2006 essay on the map, compass rose, and the Zodiac’s name.
Read the essay →
