B&W foreign, probably French film, produced before 1965. Had subtitles. Plot had murder and I think espionage. In this film credits run as if movie has concluded. However at the end of the credits, the picture pans out and foucuses in on a woman getting up and leaving the theater portraying that she was watching the same movie as I. She departs the theater and the action continues into another movie plot that I think was related to the plot seen at the beginning. I believe the lead actor was a woman.