This is a fascinating book written in an easy-reading style that makes this complex and baffling subject highly entertaining. The chapters include: From Out of the Blue; Armed Reconnaissance; Casualties of War; Alien Contacts; Human Harvest; The Search for Truth; The Invasion Hypothesis; and, Conclusion.This book includes material from sightings of UFOs to meetings with aliens, contacts with alien cultures and outright conflict between humans and alien invaders.