10 Terrifying Horror Movie Phone Calls You'll Never Forget
2. Black Christmas
Black Christmas has a place amongst horror movie royalty. After all, despite many believing John Carpenter's Halloween as being the movie to start the slasher subgenre, it's actually 1974's Black Christmas that is the rightful launching pad of the humble slasher.
Not only is Black Christmas famed for being the jumping off point for one of horror's most beloved and popular subgenres, but the movie also has one of the most notable uses of the telephone in the history of horror.
Centred on a sorority house, Black Christmas sees the residents of said house begin to receive a variety of threatening phone calls. Being young carefree sorts, however, the girls pay little attention to these calls and play them down as just somebody goofing around. That is until the body count starts to pile up.
Not only did Black Christmas introduce moviegoers to the notion of the slasher, but the picture also gave us all one of the first uses of the eventually-overplayed trope of 'the call is coming from inside the house' that would become a staple of horror for years to come.