In the begining scene where they are trapping Jason, when the lady was about to get into the tub, she had no shoes on because she was about to shower. Jason comes in and they have this chase scene from the bathroom into the woods. While running in the woods at one point she would have on shoes and the next cut to she'd be barefoot, and the next shoed, and so on. You have to really pay attention to notice this, but we love to pick out bloopers in movies.