Black Christmas (also released under the titles Silent Night, Evil Night, and Stranger in the House) is a 1974 Canadian independent horror film directed by Bob Clark and written by A. Roy Moore. It stars Olivia Hussey, Keir Dullea, Margot Kidder, Andrea Martin, Marian Waldman and John Saxon. The story follows a group of sorority sisters who are stalked and murdered over Christmas vacation by a killer hiding in their sorority house. It was inspired by the urban legend of "The Babysitter and the Man Upstairs", but was also largely based on a series of murders that took place in Quebec, Canada around Christmas time. Black Christmas is generally considered to be one of the first slasher films. A remake of the same name, produced by Clark, was released in December 2006. A disoriented man climbs up into the attic of a sorority house while the occupants hold a Christmas party. Jess Bradford (Olivia Hussey) receives an obscene phone call from "the moaner," a man who has recently been calling t...