I need to fin a movie I saw around 10 years ago (found out that was a remake and saw the old version sly he same day). The movie is about someone going to a mental asylum (either Dr or reporter or other kind of staff), he kinda falls for a girl there (which I think it was nurse but I am not sure). There is this “corridor” with rooms in very bad conditions where very dangerous and brutal killers are locked, however, at the end of the corridor, there is one cell that has the worst killer of all of them, but, the guy is never able to see his face; jut to find out later its himself the one in the last cell and then he tries to murder other people ( and I think even the girl he falls for)