Here, from the widely respected British UFO Research Association, are the reports of a group of dedicated and well-known UFO researchers--believers and skeptics alike--that present a complete overview of the phenomenon that has baffled mankind for decades. This comprehensive study of UFOs includes: * The amazing reports of sightings-from all over the world * The frightening contacts-radar, visual, personal encounters, and alien abductions * The investigations-what they show, and what the government may be covering up * The explanations-are they extraterrestrial, or is there another way to explain this 40 year phenomenon * The case for skepticism-and the case for scientific study.