Movie Goof (miscellaneous): The town 'Backwater' that the movie is set in, seems to be deserted. No people are out and no shops or anywhere are open - and it's a pretty big town. The only place that is open is the diner.
Movie Goof (continuity error): When Sean gets out of the lake, he is wet and wearing a bathing suit. When he mounts his motorcycle less than 30 seconds later, he is fully clothed and completely dry.
Movie Goof (revealing mistake): When Sean is pulled through the window with the chain by Ray Sawyer, the whole window behind him shatters. However, a few moments later inside the house - the window has somehow repaired itself.
Movie Goof (continuity error): When Sean is pulled through the glass window with a chain, he doesn't have any cuts on him.