For more than fifty years, the bizarre events at a remote Utah ranch have ranged from the perplexing to the wholly terrifying. Vanishing and mutilated cattle. Unidentified Flying Objects. The appearance of huge, otherworldly creatures. Invisible objects emitting magnetic fields with the power to spark a cattle stampede. Flying orbs of light with dazzling maneuverability and lethal consequences. For one family, life on the Skinwalker Ranch had become a life under siege by an unknown enemy or enemies. Nothing else could explain the horrors that surrounded them -- perhaps science could.