This 17th century treatise on demonology, written by the respected theologian, Catholic priest, and exorcist, Rev. Father Sinistrari, examines a particular class of spirits known as the incubus and succubus. These minor demons crave sex and often attack their victims while they sleep. Though incubus and succubus are considered less dangerous than possessing demons, they can be relentless in pursuit of their desire and grow violent when resisted. Demoniality...