I rented Orphan off Apple TV this weekend.
I'd recommend this movie. The premise isn't original, but they have some unique twists that make it interesting. The movie also runs a bit long, and degrades into a bit of formula at the end, but for the most part it was very suspenseful.
Without giving much away: The movie is about a family that lost their third child in delivery, and to fill this void they wish to adopt. Only the child they adopt seems to have trouble follow her.