An interview at the Tribeca Film Fest with director John Dowdle revealed - when asked if this movie is based on an actual killer in Poughkeepsie - that (and I quote): "It's actually a combination of a number of them, but there's one -- Edmund Kemper. He was a really, really scary guy and we took a lot of pieces from him and we took some from the Green River Killer. There was a guy in Chicago we took pieces from. There was a duo in Michigan who worked together and filmed everything they did, and we took some stuff from them. Some from Ted Bundy too. So we sort of combined a lot of different real stories. Remember that couple that kidnapped a 19-year old girl and kept her as a slave for six years? We took pieces of that as well." So all of you out there insisting that this is a true story about a Poughkeepsie killer who video-taped his murders are making fools of yourselves.