When a widower (Robert De Niro) moves upstate to concentrate on being a better father, his daughter makes a strange friend who threatens to turn their lives into a nightmare.
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For Emily (FANNING), her games of Hide-and-Seek with an imaginary friend have become anything but simple and innocent. Instead she finds herself in the middle of a series of nightmarish acts that even her father (DE NIRO) cannot stop.
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