The Baby-Sitter (Point Horror S.)

From the minute Jenny accepts the Hagen baby-sitting job, she knows she has made a terrible mistake. First, there is the dark and gloomy Hagen house, filling her with dread and horror. Then the crank phone calls start, and Jenny discovers a creepy "neighbor" prowling in the backyard. When she finds a threatening note in her bad, she realizes that this isn't a harmless game. But who wants to hurt her? What kind of maniac is willing to scare her…to death?