In the suspenseful thriller "When a Stranger Calls (1979)," a young babysitter's night takes a terrifying turn when she begins receiving mysterious and chilling phone calls. As the calls escalate in intensity, she realizes that she is not alone in the house and that her life is in grave danger. With the help of the police, she must navigate a twisted game of cat and mouse with a menacing stranger whose motives remain shrouded in mystery. Tension mounts as the babysitter races against time to uncover the identity of her tormentor and ensure her own survival. "When a Stranger Calls" delivers heart-pounding suspense and spine-tingling thrills that will keep viewers on the edge of their seats until the gripping conclusion.