The Hand That Rocks the Cradle

Upscale suburban parents Caitlin and Miguel hire Polly Murphy, a seemingly sweet nanny, to help care for their newborn baby. At first, Polly appears to be the calm presence their home needs, but Caitlin soon begins to suspect that the woman they have welcomed into their lives is not who she claims to be, and that her reasons for taking the job have little to do with lullabies.