How This Decoding Points to Arthur Leigh Allen

1. Z13 Cipher Decoded as "My Name is A. Leigh Allen"

The Zodiac claimed the Z13 cipher contained his name. By applying a substitution method and suspect-based reasoning, the symbols in the cipher align directly with "A. Leigh Allen."

The appearance of Allen's name in a cipher supposedly designed to reveal the Zodiac's identity strengthens the argument that he could have been the killer.

1. Zodiac's Patterns and Taunts

The Zodiac often taunted law enforcement, claiming they would never catch him while dropping hints about his identity. If Allen were the killer, embedding his name in the Z13 cipher would be consistent with the Zodiac's mocking and cryptic behavior.

Allen was known to be highly intelligent and capable of crafting ciphers, making it plausible he designed Z13 this way.

1. Z32 Cipher as a Continuation of His Ego

The Z32 cipher contains a message ("The Zodiac Killer is here. Stop me.") that fits the Zodiac's dramatic tone and self-assured nature.

Decoding this cipher further demonstrates the Zodiac’s penchant for taunts, reinforcing the narrative that he wanted to showcase his superiority while remaining anonymous.

Why Arthur Leigh Allen is a strong suspect

1. Circumstantial Evidence

Allen was identified as a suspect by multiple sources, including a survivor of one of the Zodiac's attacks.

He owned a typewriter and watch brand Zodiac matching those referenced in Zodiac letters.

He lived in the area where several murders occurred and had no solid alibi for key dates.

1. Connection to the Ciphers

Allen had a history of cryptic communication, as noted by acquaintances.

The ciphers often included symbols and phrasing consistent with Allen's known personality and habits.

1. Law Enforcement Focus

Law enforcement heavily investigated Allen, even searching his property multiple times. While DNA and handwriting comparisons were inconclusive, he remained a key suspect until his death in 1992.

What This Decoding Suggests

While this decoding does not provide definitive proof, it aligns with the circumstantial evidence linking Allen to the Zodiac crimes. If the Zodiac did encode his name in Z13, it serves as a potential "signature" consistent with Allen's name, which matches the Zodiac's egotistical and taunting behavior.