The Poltergeist
WILLIAM G. ROLL, Ph.D., is an Oxford-educated parapsychologist on the faculty of the Psychology Department of State University of West Georgia in Carrollton, Georgia. Over the course of his extensive career he has written three books and more than two hundred scientific articles. He has appeared on numerous segments of "Unsolved Mysteries," as well as the Discovery Channel and other television documentaries. In 1996 Roll received the Outstanding Career Award from the Parapsychological Association and in 2002 he received the Tim Dinsdale Memorial Award from the Society for Scientific Exploration.