Explore the secret stories behind some of the big screen's most famous specters. Discover how the lights in one movie studio swing unaided from the rafters, and how in the bar of the famous Knickerbocker Hotel, objects move on their own and images of long-deceased stars appear and disappear at random. Whether a series of coincidences or the work of real spirits, Hollywood's historians and eyewitnesses explain why the glamorous ghosts of Tinseltown are unlike any others.