Hello. I remember watching an old movie on TCM. I think it was black and white. It was described as being a movie made up of B actors, but I’m not sure if I’m remembering that correctly. Anyway, from what I can remember, the movie stars a nurse (I think) that was kidnapped and set up in an opulent home/mansion. She was told she was the heirs wife (I think). She knows she’s not, but they’re trying to convince her she’s mad or has forgotten. There’s the “mother-in-law” that’s a part of the “they”. At one point, she tries to send a letter, and there was a tense scene of her trying to get the letter out of the home and sent. If anyone can tell me the title, I’d much appreciate it.