It's not your typical UFO book, though it is full of contactees, conspiracy plots, and cattle mutilations. With an in-depth, although skeptical scrutiny of the UFO phenomenon, Peebles doesn't address every case but tackles the most widely quoted incidents from Kenneth Arnold's sighting of flying disks in the '40s through the abduction trends of the early '90s. While the book is biased, Peebles' research is impeccable, and he brings to light facts which many pro-UFO authors tend to neglect.