Join paranormal expert and ghost hunter Hans Holzer as he investigates the most famous haunted locations around the world Ghosts have been known to haunt not only houses but other locations as well—such as dark forests, trains, ships, and even airplanes. Professor Hans Holzer looks at several of the most menacing of these cases, from the ghost bride of Nob Hill in San Francisco to the "gray man" of Pawley's Island in South Carolina and the haunted organ at Yale University in New Haven, Connecticut.