The Demonism of the Ages: Spirit Obsession and Its Remedies

The Demonism of the Ages investigates beliefs in demonic possession, witchcraft, and spirit obsession throughout history, especially in medieval and early modern Europe. Summers draws from trial records, exorcism manuals, and theological writings to explore how demonology shaped religious fear, judicial practice, and cultural imagination. This work is both a historical survey and a literary exploration of one of the most haunting themes in the Western esoteric tradition.