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An independent investigator just unlocked what could be one of America’s most shocking crime connections: the Zodiac Killer and the Black Dahlia murder may have been committed by the same person. After nine months of cryptographic work, investigator Alex Baber claims he cracked the Z13 cipher, revealing a name hidden for 78 years. The FBI is now reviewing the stunning discovery and suspect links.
🔥 Quick Facts
- The Z13 Cipher Decoded: Reveals the name Marvin Merrill, an alias for Marvin Margolis
- Time Span Between Crimes: 1947 Black Dahlia murder to 1968-1969 Zodiac killings in Northern California
- Key Evidence: LAPD approached the suspect’s family for DNA testing, unprecedented in the Black Dahlia case
- Cryptographic Method: Artificial intelligence software tested 71 million possible names to crack the code
The Code-Breaking Breakthrough That Changed Everything
Alex Baber, co-founder of Cold Case Consultants of America, spent nine months analyzing the Zodiac Killer’s cryptic messages using proprietary AI technology. The Z13 cipher, sent in April 1970, was preceded by the taunting message “My name is”, suggesting the killer encoded his true identity in thirteen characters.
Baber’s breakthrough employed double-layered encryption involving transposition and substitution ciphers arranged in a 2 by 7 grid. The decoder used Elizabeth Short’s name (the Black Dahlia victim) as the numerical key to unlock the sequence. Former NSA codebreakers peer-reviewed his work and confirmed the cryptographic validity of the solution.
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The Suspect: Marvin Margolis, AKA Marvin Merrill
Marvin Margolis, also known by the alias Marvin Merrill, was a prime suspect in Elizabeth Short’s 1947 murder. Social security records connected the two identities, revealing Margolis dated Short in the 1940s and was among 22 persons of interest in the original LAPD investigation.
According to sources, the suspect’s background included World War II military service as a medic in the Pacific, multiple failed careers, and a history of troubled relationships. Criminal profiler John Kelly stated that the career field producing the most serial killers is medicine, with five of 22 early suspects in Short’s murder being doctors or medical professionals. “In my opinion,” Kelly told Fox News Digital, “this guy fits like a glove.”
Connecting the Pieces: Physical Evidence and Handwriting Analysis
| Evidence Type | Details |
| Handwriting Analysis | Phonetic spelling errors matched between Zodiac letters and Margolis documents |
| Sketch Evidence | Margolis drew a portrait labeled “Elizabeth” 46 years after her death with wounds matching her injuries |
| Hidden Word Detection | Word “Zodiac” appears embedded in pencil impressions on sketch’s lower right |
| Family Interview | Margolis’s son showed visible physical reaction, saying “We’re gonna be OK” after learning findings |
Baber visited Margolis’s surviving son, who provided handwriting samples. According to Baber, both Zodiac and Margolis made identical phonetic spelling mistakes, a rare linguistic signature. The son also produced a chilling sketch drawn by his father, labeled “Elizabeth,” apparently depicting Black Dahlia victim Elizabeth Short.
FBI and Law Enforcement Review Under Way
Baber shared his evidence with law enforcement agencies across California for official review. Most dramatically, LAPD detectives approached Margolis’s family to request DNA samples, marking the first time in 79 years such a step was taken in the Black Dahlia investigation.
“That’s never happened for the Black Dahlia case,” Baber stated publicly. The FBI declined immediate comment, but sources confirm the bureau is evaluating the cipher solutions and circumstantial connections. If verified, this case could rewrite the history books on two of America’s most infamous unsolved murders.
What Makes This Theory So Compelling to Investigators?
Baber uncovered additional links implicating a single perpetrator: Margolis’s roommate during the 1947 Black Dahlia investigation was Bill Robinson, a hand-picked World War II cryptographer chosen by General MacArthur. This suggests Margolis had access to advanced encryption knowledge.
A podcast titled “Killer in the Code” hosted by Michael Connelly documents the investigation in detail. Margolis, who has since died, was never charged in either case. But the mounting evidence from cipher decryption, handwriting analysis, sketch analysis, and forensic genealogy continues to raise questions. Did one man orchestrate America’s two most captivating cold cases?
“Currently, for the first time in history, LAPD detectives approached the family of a suspect to obtain DNA. That’s never happened for the Black Dahlia case… we got a pretty good feeling that we’re sitting in the right seat.”
— Alex Baber, Cold Case Consultant
Sources
- Fox News – Breaking investigation into Zodiac cipher decryption and Black Dahlia suspect connection
- Daily Mail – Comprehensive analysis of Z13 and Z32 cipher solutions with forensic expert commentary
- Slate – Investigative feature on the 80-year connection between two unsolved California cases
