Based on the testimony of 200 subjects who claimed to have been abducted by aliens, this analysis by a distinguished scholar stands as one of the most definitive and well-researched studies on the subject. It persuasively examines the broader implications of these experiences and their larger place in human consciousness. This commemorative edition of the groundbreaking study includes the most remarkable testimonies collected by the author, new forewords by leading experts, and photographs. It serves as a fitting tribute to a pioneer authority in this controversial field, and pays homage to a man who dedicated his career to investigating the phenomenon of alien abduction and itsrole in the science of human experience.