Revealing mistake: The square base holding the knife in Alba's back is visible.
Revealing mistake: When Mrs. Wadsworth is whipping the babysitter, the babysitter's stunt double is obvious due to the style and color of her hair.
Revealing mistake: The babysitter's stunt double has a different hairstyle and color than the actress playing her as Mrs. Wadsworth whips her.
Revealing mistake: The eyes of Germaine's corpse shut, then open as Mrs. Wadsworth pulls the body off the bannister.
Revealing mistake: The square base securing the knife in Alba's back is visible.