Corrected entry: After Charlie kills the sheriff, the police car lights outside remain flashing, however, as soon as Emily runs outside and Charlie begins to chase her, they stop.
Corrected entry: Towards the middle of the movie when the tea kettle is boiling, it whistles. However there is no cover on the spout of the kettle to make it whistle.
Corrected entry: Calloway smothers his wife with a pillow in bed then carries her to the bathroom to fake the suicide. However, being deceased her heart would no longer pump and blood would not have pooled like the amount shown by the crimson bathtub water. It would be obvious to the coroner that death was not by asphyxiation, he would rule "homicide" and the movie would effectively be over at that juncture.
Corrected entry: Having woken up with a start just after Elizabeth was pushed from Emily's bedroom window, David goes into the lounge, turns off the television and walks upstairs into Emily's room. In doing this, the lounge and hallway are cast in almost complete darkness. On going back downstairs to answer the door to the sheriff, suddenly the hallway light is on plus lamps in the lounge - meaning it's really bright all round. (01:03:55)
Corrected entry: In the middle, Emily goes to bed right after taking a shower. Her hair is 100% dry. A girl's hair is never this dry after a shower.