I suspected as much...
And old, old trick.
But it still scared me shitless. And being able to frighten someone with an overdone scare is just as impressive as making an original one- maybe more so. The dolls are really fuckin' creepy, and I was freaked out before the climax, so mad props all the way. Excellent use of image and sound. I haven't gotten a good shock like that in a while.