Ghostwatch was a controversial British horror-mockumentary television movie which was produced by the BBC and aired on BBC One on October 31 (Halloween), 1992. The 90-minute film was a horror story shot in a documentary style and appeared as part of BBC Drama\'s Screen One series. It involved BBC reporters performing a live, on-air investigation of a house in Northolt, Greater London at which poltergeist activity was believed to be taking place.