This book is a compilation of articles from the magazine Science and Mechanics, dating from 1967, written by Lloyd Mallan, Gordon Evans (who also wrote for Fate, Saucer News and Flying Saucer Review) and Frank Salisbury. The highlights of the book are the illustrated history of unexplained sightings from Project Blue Book and the three part investigation into UFO sightings at Wanaque reservoir, New Jersey in October 1966. There is also a somewhat unsettling short investigative piece on "Ithaca's Terrifying Flying Saucer Epidemic".