Blu-ray/Collector's two disc edition. Black Christmas is a 1974 Canadian psychological slasher 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 receiving threatening phone calls, while being stalked and murdered during the holiday season by a deranged murderer hiding in the attic of their sorority house. Years after it's release, Black Christmas has received respected praise and is credited for originating the unsolved ambiguous identity for the killer. The film is generally considered to be one of the earliest slasher films, served as an influence for Halloween, and has become a cult classic.