The Unknown Power
"The author was skeptical when he began his investigations in Brazil. Then strange and alarming things happened to him...He spent four bewildering nights in a poltergeist-ridden house, recording inexplicable events on tape. He watched several of the country's best-known psychic surgeons open bodies with their bare hands. Then he submitted to unorthodox surgery himself, and lived to recount his sensations. He encountered that rarest of all psychic phenomena--full-form materialization. He met the fabled Chico Xavier, whose automatic writings--dictated by the spirits of some 500 dead authors--are produced in a state of trance.