The Stepfather (1987)

Jerry Blake is a man obsessed with having the perfect American Dream life - including the house with the white picket fence in the suburbs, complete with an adoring wife and loving children. He believes he's found it when he marries Susan Maine and becomes the stepfather to Susan's 16-year-old daughter, Stephanie. But Stephanie gets an uneasy feeling when she is around Jerry with his Father Knows Best attitude she can see that there is a darker side behind his cheerful exterior...