The Hand That Rocks the Cradle (1992)

Rebecca De Mornay is the glue that holds this thriller together. It's a pretty good story and has some very nice moments, but it's her cold-blooded performance that makes the whole thing truly terrifying to watch. It's an intelligent movie as well - the characters aren't stupid, just overly trusting. As soon as they begin to get the idea that something is wrong, they act, and they act intelligently. Overall, I enjoyed this a lot - definitely would recommend it! 4 stars.