The ‘Codex Gigas’, latin for big book, is the largest medieval manuscript in existence. Once considered the eigth wonder of the world, stretching three feet long, weighing 165 pounds. Inside it are the bible, ancient histories, medicinal cures and magical spells. This documentary takes a look at the history of the book, and tries to uncover why it was written and by whom. Unlock the secrets of a medieval mystery, as science and investigation uncover the fabled and feared Devil’s Bible.