Explains the theories behind ghostly phenomena from the perspective of parapsychology. Covers whether or not anyone can prove the existence of ghosts. What these hauntings and poltergeists are are and what they tell us about human experience.How knowledge of parapsychological lab research enhances understanding of apparitions, hauntings and poltergeists, both from the perspective of an investigator and the people who encounters them. How investigators can recognize and enhance their psychic abilities. Written by a world-renowned ghostbuster, Loyd Auerbach