When a Stranger Calls (2006)

Enjoy the trailer! A hundred miles away from the scene of a grizzly murder in small town America, JILL JOHNSON (Camilla Belle) settles in for a routine night of babysitting. With the children sound asleep and a beautiful home to explore, she locks the door. But when a series of eerie phone calls from a STRANGER insist that she check the children, Jill panics. From IMDB: Tagline: Whatever You Do, Don't Answer The Phone. Plot Outline: During an otherwise routine babysitting gig, a high-school student is harassed by an increasingly threatening prank caller.