Rogo touches ephemerally on the entire spooky gamut: ghosts and poltergeists, ESP, spirit photography, out-of-body experiences, haunted houses. He covers his tracks neatly right at the start announcing that ""If one looks for reasons or explanations, psychical phenomena will soon catapult the seeker into a quagmire."" It won't do to try to pin down those phantoms -- rather, the paranormal ought, by now, to be accepted as ""natural,"" and but for our hopeless materialism, would be. Psychotics, according to Rogo, may be specially sensitive to the psi world and their testimony should not be discounted merely because they're certifiable. He has collected dozens of instances -- footsteps on the empty stairs, flying objects, sudden premonitions of the death of a loved one later verified by something as official as a telegram: Some of these emanations are contemporary; not surprisingly many date from dusky evenings in Victorian drawing rooms. As he says, ""Phantoms are mysterious things"" -- don't smile, that's meant to be serious.