Spoiler alert The killer and teen girl switch bodies . And the killer in girls body commits like 7 grizzly murders with her DNA and blood at the scene. Because the the girl had motives to kill the bullies and the mean teacher. Its not plausible that we switched bodies defense would work in the courts.. .ok end of the movie how after being shot serverl times at close range by the police , while handcuffed to a gurney in the back of the ambulance .with a police officer guarding him . He manages to break free, kill officer , get out of moving ambulance. Find the girl's house he has never been too on foot .make it there and fight the 3 occupants?