Theory Zodiac new 2026

[Nataku1995]

Subject: A Legal Perspective on the Zodiac Case: The Case for Dual-Authorship (Allen & Sullivan)​

Introduction:


As a practicing attorney, I have spent considerable time reviewing the Zodiac Case files from a prosecutorial and evidentiary standpoint. After analyzing the structural contradictions in the forensic data, I am convinced that the 50-year failure to solve this case is due to the "Single Suspect" fallacy. I am formally proposing a Dual-Authorship Theory that bridges the gap between physical evidence and witness testimony, involving Arthur Leigh Allen as the "Enforcer" and Ross Sullivan as the "Communicator."


The Legal & Forensic Argument:


1. Resolving the DNA Contradiction:


The 2002 partial DNA profile extracted from the stamps did not match Arthur Leigh Allen. In a standard defense, this is used to exonerate him. However, from a co-authorship perspective, it only proves Allen did not lick the stamps. If Ross Sullivan—a library assistant with high-level cryptographic and literary skills—was the "Writer" and logistics manager, the DNA on the envelopes belongs to him, not the man who committed the physical attacks.


2. Witness Testimony vs. Biological Evidence:


We must account for the positive identification of Arthur Leigh Allen by survivor Michael Mageau. As a lawyer, I recognize that direct identification by a victim is a primary pillar of a criminal case. The reason the fingerprints and DNA failed to link Allen to the letters is a classic "separation of roles." The man who fired the gun (Allen) was not the man who handled the mail (Sullivan).


3. The Chronological "Silence" (1977-1992):


The timeline of the Zodiac’s activity and the suspects' deaths provides a compelling "Smoking Gun":

• Ross Sullivan died in 1977. Immediately following his death, the sophisticated letters and cryptograms stopped. The "Persona" of the Zodiac died with the man who had the intellectual capacity to create it.
• Arthur Leigh Allen lived until 1992. While he remained the primary physical suspect, the "Zodiac" communications never regained their original complexity or frequency after Sullivan’s passing. The "Enforcer" survived, but he had lost his "Scriptwriter."

4. Physical Overlap & Reasonable Doubt:


Both men shared a similar robust build, height, and wore glasses. This physical redundancy created a perfect "visual shield," allowing them to be interchangeable in the eyes of distant or traumatized witnesses.


Conclusion & Call to Action:


To move this case forward, we must move beyond the "Lone Wolf" theory. I urge the cold case community and investigative agencies to:

• Pursue Investigative Genetic Genealogy (IGG) on the Sullivan family (specifically the descendants of Ross's brother, Tim Sullivan) to compare against the 2002 partial profile.
• Investigate 1960s social or professional overlaps between Allen and Sullivan in the Vallejo and Riverside areas.

If the DNA of the letters matches Sullivan and the identification of the killer remains Allen, the case is legally solved as a criminal partnership.

 

[Sor Juana]

That’s an interesting angle, who knows, it might be right