When a Stranger Calls (2006)

In "When a Stranger Calls" (2006), a teenage babysitter receives unsettling phone calls from an anonymous stalker while house-sitting for a family. The tension escalates as she realizes the calls are coming from inside the house, leading to a terrifying confrontation with the intruder. The film focuses on the cat-and-mouse game between the babysitter and the dangerous stranger, highlighting themes of fear, suspense, and survival.