Men in Black incidents straddle the realms of mysticism and science, occultism and UFOs, material reality and fantasy; partaking of all, defined by none. Since ancient times these mysterious beings have stalked the planet. In recent years they have tried to silence witnesses of UFO sightings with threats, harassment and worse. Who are these strange beings garbed all in black? Are they government agents? Aliens? Creatures from another dimension? In Casebook on the Men in Black, author Jim Keith traces the path of these unusual visitors through history, and presents startling evidence about their origin and purpose. Jim Keith is the bestselling author of OKBomb: Conspiracy, and Cover-up, Casebook on Alternative 3, Black Helicopters Over America and The Gemstone File.