Factual error: The actress Sasha Barrese is credited at the beginning of the movie as "Sasha Berrese".
Continuity mistake: In the close up of Thorne dropping his keys in a dish near the beginning of the movie, his keys are for a Dodge vehicle, but he drives a Cheverolet Sedan.
Pinhead: It's all a puzzle, isn't it, Joseph? Like a game of chess, perhaps. The pieces move, apparently aimlessly, but always towards one single objective: to kill the king. But who is the king in this game, Joseph? That is the question you must ask yourself.