Since you guys are good at naming movies, perhaps you can help me figure this one out. I saw it with my dad when I was a kid. Strangely, even my father can't seem to remember the name of this black and white film. So here goes: An aspiring actress went in for an interview for a part in a movie. The interviewer was dumbstruck by how uncanny she looked like the person he had in mind. The actress was immediately offered the role and she showed up at the director's house. The director and/or the man who gave the interview informed her it would be like a thriller, and they proceeded to film her acting out a scene (inside the director's house). From there, the movie took a strange turn in which the "director" was actually using the actress as a body double for his wife for some reason and the filmed scene to get back at something. She somehow got locked in the attic where she found herself next to the director's (dead?) wife. I believe the same actress played both the wanna-be actress and the "director's" wife in the movie.