A closer look at
the Zodiac case.

Explore the crimes, communications, and unresolved questions through the research and analysis of Michael Cole, author of The Zodiac Revisited.

Explore the archive

Start with a question.

Selected starting points from the research archive. Follow the evidence, examine an argument, or revisit the story behind a crime.

01 / THE CASE

An introduction to the case and the questions surrounding the man behind the name.

02 / THE CIPHERS

Michael’s proposed solution, the reasoning behind it, and the limits of interpreting a thirteen-symbol cipher.

03 / THE CRIME SCENES

A closer look at the scene of the murders of David Faraday and Betty Lou Jensen.

Tools & reference

Hands-on tools and reference material for readers exploring the Zodiac’s communications.

Create a cipher from your own message and experiment with its configuration.

Find fonts for working with the symbols used in the Zodiac’s ciphers.

A video introduction to the cipher generator and its controls.

The book series

A three-volume examination of the case, separating its factual foundation from analysis and fact-based speculation.

I
The Facts of the Case
The events, crimes, and communications that form the foundation of the case.
II
Analysis and Fact-Based Speculation
An examination of the evidence and the possibilities it raises.
III
Tying It All Together
A broader interpretation of the case and its connections.

Watch & listen