Fleming deftly explores the enigmatic history of UFOs, extraterrestrials, and conspiracy theories related to the infamous events during the summer of 1947 in Roswell, New Mexico. Brisk chapters (with such evocative headings as “What’s That in the Sky?” and “Could It Really Be a Flying Saucer?”) cogently weave together how the now-ubiquitous story of a UFO crash-landing in the desert came to be.