A man wakes up in the woods. He can't remember how he got there, but knows that he has to find his way home. Throughout the night he is pursued by demons and monsters, but he eventually reaches a clearing, where he finds his old van. He gets in, starts the engine and drives away, breathing a sigh of relief. It's then , in the film's final scene that he looks in his rear view mirror and sees a monster sitting in his back seat.
The lights in the auditorium go up and your eyes adjust as the credits roll. you think about leaving but then you look down and OH MY GOD! YOU'VE SPILLED POPCORN ALL OVER YOUR TROUSERS!