Augustin Calmet's work, The Phantom World, overviews a rich and varied selection of supernatural tales and beliefs from the stance of the logician. The author compiles testimonies from different places such as Hungary, Poland, Peru, and England and provides his stories with illustrations by famous authors. He seeks to understand the truth behind the stories. For example, what made people believe in good and bad angels, magic, apparitions, vampires, witchcraft, possession by demons, and other mystical stories.