Most ghost stories relate to old buildings. The spirits involved are like a flashback in time, frozen in a repetitive action, oblivious to the surroundings of modern life. Poltergeists however, are something entirely different. They haunt people, not places, and they deliberately make their presence known. Poltergeists demonstrate a level of intelligent interaction with the living world that is not known amongst other types of ghost. Opinion is split on exactly what “poltergeists” are. Some argue that they are energy sources, originating from living people. Others suggest that they are the spirits of the lingering deceased.