I think maybe we die every day. Maybe we're born new each dawn, a little changed, a little further on our own road. When enough days stand between you and the person you were, you're strangers. Maybe that's what growing up is. Maybe I have grown up.
Mental hospitals are great for horror movies because they're already scary even without the horror or supernatural elements. This is a place where you can play with the ideas of one's sanity, what's real and what's not.