The Necronomicon was not the first book by H.P. Lovecraft to terrify readers with tales of dark and twisted horrors from beyond. No, the Al-Azif, or Book of the Insect, is the first work that told mankind of Cthulhu, Azathoth, and other terrors. Indeed, it was the book that inspired "The Mad Arab" Abdul Al-Hazred to write its more famous successor.