William G Roll (1926 - 2012) moved from Denmark to the United States in 1946, aged 20, and enrolled in a Bachelor of Arts at the University of California, Berkeley, majoring in psychology and philosophy. Following this he spent a number of years at Oxford University doing parapsychology research, where he received his M. Litt. degree for a thesis entitled "Theory and Experiment in Psychical Research". In 1957, Roll joined the staff of J.B. Rhine's Parapsychology Laboratory at Duke University, where he spent seven years conducting psi experiments and investigating cases of haunting and RSPK/poltergeist activity, which he is perhaps most well-known for. In 1989, Roll received his Ph.D. from Lund University, Sweden, for a thesis entitled "This World or That: An Examination of Parapsychological Findings Suggestive of the Survival of Human Personality After Death."
During his career Roll wrote more than 100 scientific papers, authored four books, was President of the Parapsychological Association, and in 2002 was awarded the Dinsdale Memorial Award by the Society for Scientific Investigation.
Roll's most famous case was as the lead investigator on the 1984 "Columbus Poltergeist" case, in which remarkable color photos were taken by a veteran newspaper photographer for the Columbus Dispatch newspaper, Fred Shannon, which allegedly showed spontaneous telekinesis events in action occurring in the home of Columbus, Georgia teenager Tina Resch.
The Poltergeist (2004 edition, Paraview Special Editions) ISBN 1-931044-69-4
Unleashed: Of Poltergeists and Murder: The Curious Story of Tina Resch (2004, Pocket Books)