"The Codex Gigas," also known as the "Devil's Bible," is a giant medieval tome that has evoked fear for centuries and believed to contain a malevolent power; experts investigate its legendary secrets and uncover the mystery behind its author. Find out more tonight at 20h15 on 'Forbidden History' only on #TheHistoryChannel | HISTORY

What is the Devil's Bible? How was this massive manuscript written in a single night? The legend is that a Monk on his death bed made a deal with the Devil to finish the bible in time to save his life, and although he may have finished it, his life was not spared. Check out this ancient text with a portrait of the Devil that could only have been made with the help of Lucifer himself. | The Infographics Show