It's going to be very difficult to describe since I haven't seen the film in over 15 years and even than, only watched it in clips through television broadcast as it was late at night and I was drifting in and out of sleep. All that I can really say about it, is that it was a black and white film and I can't remember if it was classic Hollywood from the 40's/50's era or a later 60's production but definitely not anything later. There's one scene that sticks out with me... A woman is washing a little girl or possibly a baby in a bathtub and I believe either drowning her or the baby is already dead and she continues washing the dead baby either not consciously realizing or pretending she doesn't. I think it might have been the little girl's nanny or something, and she was some kind of sociopath. Anyways, this has been driving me absolutely nuts for the longest time and I have to find the name of this film and track it down on DVD. Any help is very much appreciated!!