Beginning with the identification of Jack the Ripper by a medium who also had precognitive knowledge of his atrocities, the author presents an extraordinary variety of actual crimes puzzling enough in themselves , but remarkable in the accurate reconstruction of events by psychics. The author, an authority on spiritualism and psychic research, writes clearly and smoothly, reporting salient facts on the assumption they are psychic experiences, but never presuming the reader must agree. In summary, he explores not only the role of the psychic world in past crimes but the role it may play, if properly utilized, in the future.