zodiac 1969 chronicle cipher

Zodiac Ciphers: How The Z 408 Cipher Was Solved 

Are You Willing To Try Solving The Zodiac’s Ciphers? 

The Zodiac didn’t leave much behind to clue us in to who he was after his horrific spree of crimes in the 1960s and 1970s. He terrified the Northern California population for years, then seemingly disappeared. He left behind just what we know of the crimes he’s been linked to, his letters, and his ciphers. Can the final mysteries of the Zodiac Killer case be unraveled with the information we have now? 

The Race To Solve The Zodiac’s Ciphers 

Even decades later, only 2 of the 4 Zodiac Killer ciphers have been solved. These include the Z 408 cipher and the Z 340 cipher. Read the Z 408 cipher in its 3 parts here: Z 408 cipher part 1, Z 408 cipher part 2, Z 408 cipher part 3. Only time will tell if the remaining Zodiac ciphers can be solved as well. 

The Solving Of The Z 408 Cipher 

Husband and wife David and Bettye Harden solved the Z 408 cipher within about 20 hours. Bettye correctly guessed at two cribs, or words or phrases that are suspected to appear in a message. Discovering cribs is useful in cracking a cipher because finding the locations of those cribs can allow substitutions to be identified, ultimately speeding up the process of uncovering the message. 

Using some of the little information known about the Zodiac Killer – the craving for attention made obvious by his letters – Bettye believed his message would start with “I.” She also believed the message would contain either the word “kill” or “killing” – or even that the Zodiac would directly state “I like killing.” Both of her guesses were correct. 

Read About The Zodiac Killer Case, Learn What Police Knew 

You can read over 200 pages of Zodiac-related police reports in Tom Voigt’s Zodiac Killer: Just the Facts. The chronological order of the reports makes it easy to learn things in the order they occurred, or you can use the easily searchable index to pinpoint whatever information you’re looking for. 

Information Gathered From the #1 Zodiac Killer Website 

Tom Voigt is responsible for the creation, curation, and editing of the #1 Zodiac Killer website, Zodiackiller.com. Launched in 1998, Zodiackiller.com remains the ONLY Zodiac Killer website recognized by law enforcement. To learn more about the release of Zodiac Killer: Just the Facts, as well as other information about the Zodiac Killer case, visit Zodiackiller.com today.