The Devil’s Book, the Zodiac’s Name, and Other Unsettling Truths
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About the episode
What if two of America’s most infamous unsolved murders were never separate at all? In this episode of The Box of Oddities, Jethro explores a startling new claim that uses artificial intelligence, cryptography, and old-fashioned detective work to suggest a single suspect may link the Zodiac Killer and the Black Dahlia—two crimes long thought to belong to different eras and different monsters. At the center of the theory is the Zodiac’s infamous Z13 cipher, a short, taunting code that promised to reveal the killer’s name and resisted decryption for more than 50 years. A self-taught cold-case researcher applied AI-driven computation to generate and eliminate more than 70 million possible name combinations, cross-referencing them against military records, census data, timelines, and geographic constraints. The result? A single identity with chilling connections to Elizabeth Short, the victim known as the Black Dahlia. Retired detectives and former intelligence cryptography specialists weigh in on why this approach is different—and why it may be the closest anyone has come to a real answer. But that’s only part of the journey. Kat and Jethro also dive into a collection of real human facts that sound completely fake—from the faint light emitted by the human body, to phantom limbs that can feel wet, to why eyewitness memories are far less reliable than we want to believe. Along the way, a Freak Family email reveals how deeply The Box of Oddities can rewire your brain (sometimes permanently). Finally, Kat closes the episode with one of history’s most unsettling books: the Codex Gigas, the largest medieval manuscript ever created. Said to contain the entire Bible, medical texts, exorcisms, and forbidden knowledge—and famously featuring a full-page illustration of the devil—the manuscript’s uniform handwriting and impossible scale raise an ancient question: was this the work of a single monk… or something else entirely? True crime, forbidden manuscripts, unsettling science, and the quiet moment when coincidences stop feeling accidental—this is The Box of Oddities doing what it does best. Learn more about your ad choices. Visit megaphone.fm/adchoices
