"German Spirit" and "Realm of Spirits": In the 19th century, these were by no means contradictory. Both were interconnected during a time still regarded as an era of scientific and technological progress and the disenchantment of our world. The author demonstrates that belief in spirits and spiritualism cannot simply be seen as remnants of old folk superstitions. Rather, the frameworks of speculative German philosophy and regional traditions of enthusiastic Christianity provided numerous points of connection for spiritualist ideas, which fascinated even the educated classes. This book describes for the first time the worldviews, cults, and magical practices in Germany from the late 18th century to the early 20th century that were associated with the belief in ghostly appearances and the power of necromancy. It introduces the reader to the subject matter.