The author analyses the factual case for UFOs , asking whether the numerous sightings are real, nonsense or a bizarre phenomenon. He examines numerous classic sightings, revealing new aspects of these cases, including the jimmy Carter UFO sighting, the UFO abduction of Betty and Barney Hill and various other close encounters. Historical parallels to modern UFO sightings and claims of those who saw witches and fairies are also examined. Illustrated with black and white photographs.