Black Christmas follows a group of sorority sisters during the Christmas holiday break as they prepare to leave their house for winter vacation. When several members decide to stay behind, they begin receiving mysterious and increasingly disturbing phone calls from an unknown caller lurking somewhere within the house itself. As the women try to determine the source of the calls and escape their predicament, they discover that a dangerous intruder has infiltrated their home. Trapped together during the festive season, the sorority sisters must band together to survive the night and unmask the killer in their midst. The film masterfully builds tension through minimal dialogue and unseen threats, creating an atmosphere of claustrophobic dread. With its innovative use of point-of-view camera work and the killer's perspective, Black Christmas pioneered many techniques that would become staples of the slasher genre. The film transforms the warmth and joy of Christmas into a backdrop for psychological horror, as the women face both external danger and their own mounting paranoia.
