Is Earth undergoing an alien invasion? In this thrilling examination of the UFO phenomenon, author Rupert Matthews assesses the growing threat of alien reconnaissance on Earth. From the earliest recorded sightings to the most recent encounters and abductions, the book sifts through the evidence and asks the crucial question: why do they come? Among the cases discussed in depth: . Caught on radar - the Rendlesham sighting . The crucial case - Roswell . Visitors in the night - the Men in Black . Antonio Boas - intimate contact with ufonauts Whether you are a firm believer in extra-terrestrial visitors to earth or a confirmed sceptic this book provides a balanced view of events to date. One thing no-one can deny: UFOs are out there.