Black Christmas (1974)

Near Christmas, a group of students from a women's fraternity receive disturbing calls and terrible threats. One is murdered, another disappears and they face horror with little help from the police. Stalked by a psychopath hiding in their attic, they will try to fight to survive. Inspired by the legend of “The Nanny and the Man Upstairs” and a series of murders in Montreal's Westmount, this film, directed by Bob Clark, is a classic of Canadian horror cinema.