When a Stranger Calls (2006)

Deep within an opulent residence, far removed from a recent, grisly crime, teenager Jill Johnson begins a babysitting assignment. The children are peacefully asleep, and a quiet evening seems assured. However, the insistent ringing of a telephone shatters the calm. An insidious voice on the other end delivers chilling pronouncements, transforming Jill's mundane task into a descent into sheer terror. What began as routine unravels into a desperate fight for survival against an unseen predator. Her night becomes a harrowing testament to the fragility of safety.