Phil and Julie have everything going for them: a happy marriage, promising careers, and now a new baby boy. Into their lives comes Nanny, experienced with children and blessed with glowing recommendations. Nanny brings Phil and Julie the kind of freedom every parent desires. But maybe Nanny is too devoted. Slowly, seductively, she assumes control of the whole household - until Phil finds his family at the mercy of a dangerous woman who will do anything to take care of them. Phil and Julie can't live without Nanny. And if they try, she might not let them live at all.