<P>From mysterious strangers and unpredictable beings to weird behavior and paranormal phenomena, the investigative team of Brad and Sherry Steiger explores more than 130 claims of visits from the unexplained, including ghosts, phantoms, aliens, and otherworldly beings. The book covers accounts of the supernatural from throughout the ages, and the breadth of the duo's findings and encounters will have even nonbelievers intrigued to discover what bold claim is next. Some of the accounts they relate tell of undersea cities hiding advanced technology developed by secret societies, physical energies activated by the psyche, out-of-body travelers, unidentified terrestrial life-forms such as orbs, and visitors from other dimensional frequencies or levels.