Taken from first-person accounts and historical documents, this book chronicles more than 300 examples of alien encounters, conspiracy theories, and the influence of extraterrestrials on human events throughout history. Investigating claims of visits from otherworldly creatures, aliens living among us, abductions of humans to alien spacecraft, and accounts of interstellar cooperation since the UFO crash in Roswell, this discussion of the theories and mysteries surrounding aliens is packed with thought-provoking stories and shocking revelations of alien involvement in the lives of Earthlings.