From the back cover:
Since the beginning of recorded time, man and his world have been plagued by unknown forces and beings, baffled by archeological phenomena, and haunted by prophecies that often come true.
In OUR HAUNTED PLANET, John Keel, noted author and researcher, brings into chilling focus strange truths about the earth and its mysterious inhabitants.
Evidence of:
* Advanced civilisations existing thousands of years before the caveman
* The strange "Men in Black"
* People who vanish forever
* People who vanish and reappear within hours in another part of the world
* Ships adrift at sea - intact - but with no trace of crew or passengers ...