French Engineer Says He Solved the Zodiac Cipher that Reveals the Killer’s Name: But Who Was Lawrence Kane?

Many cast doubt on Faycal Ziraoui’s claim but forensics may reveal the truth

Lori Lamothe
13 min readJun 29, 2021
The Z13 cipher Fayçal Ziraoui claims he cracked. Zodiackillerciphers.com

This is the second story in a two-part series on the Zodiac. You can read the first installment — “12 Surprising Facts about the Zodiac Killer” — here.

It has been a banner year for amateur detectives. In January, true crime activists brought the case of an anonymous hiker found dead in a tent to national attention, which led to his identification. In April, authorities arrested Kristin Smart’s killer based on facts that came out during the course of a podcast. And six months ago three amateur code breakers solved the Zodiac Killer’s infamous 340-cipher — a task that the world’s top cryptologists, police and the FBI had been working on for more than 50 years.

Blame it on the pandemic. Or on the burgeoning online true crime community that allows people across the globe to access key facts about unsolved cases. Whatever the reason, the efforts of these laptop sleuths have had significant real-world results.

Now a French Engineer claims he has solved the final two Zodiac ciphers, known as Z13 and Z32. The self-named Zodiac Killer murdered five people between the late…

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Lori Lamothe

Author of 4 poetry books. Cold cases. Fiction. Book reviews.