The late 15th century was a time of great turmoil and upheaval in Europe. The Catholic Church was facing challenges from Protestant reformers, and the fear of witchcraft and demonic activity was widespread. In response to these concerns, Kramer wrote "De Praestigiis Daemonum" as a guide for judges, inquisitors, and theologians on how to identify, prosecute, and punish witches. The book is a comprehensive treatise on demonology, covering topics such as the nature of demons, their powers, and their interactions with humans.