New Zodiac-Killer Book by Tom Voigt



Uncovering the Mystery: Tom Voigt’s CRIMINAL / INSANITY Takes a Deep Dive into Arthur Leigh Allen

If you’ve spent any time down the true-crime rabbit hole, chances are you already know the name Tom Voigt. Since launching zodiackiller.com back in 1998, Voigt has been at the forefront of crowdsourced investigation, archiving evidence, and keeping the public focused on one of the most infamous unsolved serial killer cases in American history.

Now, after decades of research and direct access to original case material, Voigt is back with a compelling new release: CRIMINAL / INSANITY: The untold true story of the Zodiac Killer and top suspect Arthur Leigh Allen (featuring a foreword by Terry Poyser).

What Makes CRIMINAL / INSANITY a Must-Read?

While countless books, documentaries, and movies have examined the Zodiac mystery, Voigt offers something distinct: a true-crime time capsule thirty years in the making.

  • Untold Crime Details: Uncovers fresh nuances and documented facts regarding the Zodiac’s rampage across Northern California.

  • Firsthand Accounts on Arthur Leigh Allen: Features rare, eye-opening perspectives on Allen—the man widely considered the primary suspect—from the friends, neighbors, and associates who knew him best.

  • Unprecedented Access: Built on years of working directly with official case files and interviewing original investigators and key players.

Key Book Details

  • Title: CRIMINAL / INSANITY: The untold true story of the Zodiac Killer and top suspect Arthur Leigh Allen

  • Author: Tom Voigt (Foreword by Terry Poyser)

  • Format: Kindle Edition Amazon Book Link

Final Thoughts for Sleuths

Whether you believe Arthur Leigh Allen was the man behind the cipher or you remain open to other theories, Voigt’s investigative history makes this an essential addition to any true-crime bookshelf.


CRIMINAL / INSANITY: The untold true story

 of the Zodiac Killer and top suspect Arthur Leigh Allen



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