Saturday Night Fever

Question: I remember in the '80s there was a remake of an old French movie about this man who keeps tormenting his wife and another woman. It was set in a castle or something, and the scene I remember most vividly is the one in which the wife runs into the bathroom and locks the door. She turns around and all of a sudden, he pops out of the tub full of water and his eyes are rolled back into his head. She screams. Please, oh please, tell me the title of this movie and something about it!  

Answer: Although it was made earlier than you suggest, I think you're remembering Reflections of Murder (1974), a startlingly good made-for-TV remake of Henri-Georges Clouzot's Diabolique (1955), in which the sadistic headmaster of a cavernous boys' boarding schoo read more