Scotty Parker, a college student in Southern California, is seeking a room for the fall semester at the last-minute. She is directed to a boarding house run by the standoffish Mrs. Engels; a Victorian architecture mansion on a cliffside overlooking the Pacific Ocean. Mrs. Engels lives in the house along with her teenage son, Mason, and several other college students, including Doris, Peter, and Jack. The four students become friends, and decide to go on a double date together. Afterward, Doris and Peter walk along the beach near the house. Peter, drunk, makes unwanted advances on her, and Doris leaves him on the beach. He falls unconscious, and is awakened by an unseen assailant who stabs him to death with a butcher knife.