When a Stranger Calls(tt0455857) Jill Johnson takes on what seems to be her best babysitting job yet. The children's parents are away and the kids are already in bed. But suddenly, the phone rings and a chilling voice asks, "Have you checked the children?" With the lights dim and the curtains drawn, Jill, feeling terrified, calls the police. The officers trace the calls and inform Jill that they're coming from inside the house. Trembling with fear, she musters up the courage to go upstairs and check on the children, only to find that her peaceful night has turned into a nerve-wracking and horrifying ordeal.