After half a century of widespread speculation about UFOs and abductions by aliens, a distinguished historian reveals why aliens have come, and exposes their frightening plans for planet Earth. It is a disturbing picture of aliens integrating themselves into our society and relegating humans to an inferior status.The result of three decades of research, this book answers some of the most important questions researchers have been asking since the beginning of the UFO controversy. Professor Jacobs provides, for the first time, new details about the aliens' "breeding program" -- a bold plan to create a breed of alien-human "hybrids" who will eventually colonize, and ultimately control the Earth.

A direct, authoritative challenge to researchers such as John Mack, who believe the abduction phenomenon is essentially benevolent and spiritually uplifting, The Threat adds complexity and depth to our knowledge of this fascinating subject. The secret alien agenda revealed in this book is ominous, and Professor Jacobs warns that it must be confronted -- before it is too late.