For nearly three centuries Malleus Maleficarum (The Witches' Hammer) was the professional manual for witch hunters. This work by two of the most famous Inquisitors of the age is still a document of the forces of that era's beliefs. Under a Bull of Pope Innocent VIII, Kramer and Sprenger exposed the heresy of those who did not believe in witches and set forth the proper order of the world with devils, witches, and the will of God. Even if you do not believe in witchcraft, the world of 1484 did.