"De Praestigiis Daemonum" is a treatise on demonology written by the German theologian and Catholic priest, Heinrich Kramer, in 1486. The book is one of the most influential and infamous works on witchcraft and demonology in the Early Modern period. Kramer's work was widely disseminated and translated into several languages, including English. The English translation of "De Praestigiis Daemonum" is a valuable resource for researchers and scholars interested in the history of witchcraft, demonology, and the occult.