This book is not fiction. The author researches REAL facts and sightings, and concludes that the saucers are interplanetary. Donald Keyhoe made a serious recearch, from an "inside" perspective , having some access to original military files. Before he started the research, he would not believe in the "visitors from space" answer. But checking thoroughly every other possible answer, he saw that they didn't fit in the sightings and the reports.
This book is a *must* have to anyone who wants to know the truth about the UFO phenomenon. It contains everything, from the reports and reactions to the military cover up. The *visitors* were here even before we were born. Anyone with a clear mind will see this.

In the realm of UFOlogy, this book was not only one of the first, but also one of the best reports ever written on the subject. I first read it in the early 1950's, and believe me, it is perhaps the one book that fueled my interest not only in UFO's but in all forms of Fortean Phenonema, both past and present for the last fifty-three years. No fadism in the pages of this excellent tome - just cold, hard, and well researched facts about a subject that is now more popular than when this book was first published in 1950.