Why did only half of them take their clothes off?
This movie has a lot of problems, but when the killer orders the girls to disrobe why did only half of them do so? Surely if u have a gun at your head you would do what the wacko is telling you. If half the actresses didn't want to do nudity they should have either cut that moment or cast different actresses. Plus from the moment the girls undress the camerawork is locked from behind, so to avoid showing nudity the pivotal suspense scene is ruined.