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This episode explores the Codex Gigus, commonly known as the Devil’s Bible, an 800-year-old medieval manuscript housed in the National Library of Sweden. Standing three feet tall, nine inches thick, and weighing over 160 pounds, the book contains the complete Latin Bible, historical texts, medical instructions, and a striking full-page illustration of the devil. The hosts discuss the legend of its author, Herman the Recluse, who allegedly made a deal with Satan to complete the massive volume in a single night to escape execution. Throughout history, owners and readers of the book—including Emperor Rudolph II and author August Strindberg—have suffered tragic fates, fueling beliefs that the manuscript is cursed.
The hosts and historical records examine both the supernatural folklore and the practical realities surrounding the artifact. Handwriting experts note that the penmanship remains remarkably consistent throughout the 620 pages, a feat that would normally take decades or multiple scribes, adding to the mystery of its creation. While skeptics attribute the legends to coincidence and explain the illustrations as medieval moral warnings about heaven and hell, the book remains a fascinating window into 13th-century life and knowledge.
Hosts introduce the episode and a brief ad for a home security system.
The hosts discuss how the internet makes information instantly accessible.
The hosts explain the 13th‑century monk’s task of compiling all known knowledge into one manuscript.
The legend of Herman’s bargain with the devil to finish the codex in one night is recounted.
Herman’s life after the codex is finished, his suffering, and eventual death are explored.
The book’s movement through monasteries, emperors, wars, and fires is traced.
Stories of people who have allegedly experienced supernatural effects after seeing the codex are shared.
Theories about the missing pages and a rumored cursed prayer are discussed.
Scholars explain why the codex is unlikely to cause apocalypse and what it reveals about medieval life.
Hosts conclude the episode, provide social media links, and tease future content.
Codex Gigus Physical Dimensionsdata
The hosts detail the massive physical size of the medieval manuscript, noting it stands three feet tall, weighs over 160 pounds, and is bound in animal parchment.
The Infamous Devil Illustrationinsight
The book contains a rare full-page depiction of Satan with red claws, tusks, and a green face, which led to its nickname as the Devil's Bible.
Inconsistent Handwriting Mysteryinsight
Handwriting analysis shows no variation in penmanship from the beginning to the end of the book, defying the expectation that a single scribe's style would change over time.
Legend of Herman the Reclusestory
According to local legend, a condemned monk named Herman promised his soul to Satan in exchange for writing a book containing all world knowledge in a single night.
Emperor Rudolph II Obsessionstory
Holy Roman Emperor Rudolph II became obsessed with the manuscript after receiving it in 1594, leading to paranoia, erratic behavior, and ultimately losing his throne.
The 1697 Library Fire Incidentstory
During a massive fire in Stockholm in 1697, a librarian saved the heavy manuscript by tossing it out a window, where it reportedly landed on and injured a bystander.
August Strindberg Encounterstory
Famous Swedish writer August Strindberg snuck in to read the Codex Gigus at night, later experiencing a troubled personal life filled with marital strife and alcoholism.
“The real cost of a break-in isn't your valuables. It's the feeling that your home stopped being safe.”
“The result was one of the largest, most ambitious manuscripts ever created.”
“The book is also full of colorful, elaborate illustrations like geometric designs in the margins that some think might be initials.”
Around the year 1229, one Bohemian monk supposedly made a deal with the devil resulting in a giant book that was written in one single night. As the book exchanged hands over the following centuries, it was said to be cursed, even hypnotizing those who laid eyes on it. Today, the manuscript sits in a library in Stockholm, but nobody has fully explained how it was written or where its missing pages went or said.
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