I have a question please. I saw the last part of this Black and White horror film a few years ago, that was somewhat similar to Les Diaboliques (but is not one of the remakes mentioned at, for example, en.wikipedia.org/wiki/Les_Diaboliques_(film)) I have looked for it on TCM the last few years, this time of year, but do not think it has been on. After the first victim is killed, the man repeatedly asks his co-conspirator lady friend, "Are you sure you killed her?", with the reply "Well, I thought I did." This leads up to the film's climax, when this lady becomes the second victim when she is s