In the late 1950’s up to the late 1960’s (I think it was black and white, so I’m leaning to the earlier date), I saw a movie where the widow comes home to the huge mansion where she lived with her husband, only to find that all the servants, lawyers, etc., are claiming he’s still alive. I think they had a man pretending to be the husband. All through the movie, you feel so upset that she’s being tormented this way, gaslighted I’d call it, until, at the end, she’s so overwrought that she finally screams out that she knows her husband really is dead, because she killed him. That was the whole point of the setup—to get her to confess. It was a great twist, because you were on her side right until the denouement.
This movie was in colour on TV (possibly a freeview channel at the time) within about the last 10 years. Itwas about a woman who was married to a high profile politician (I think USA) with a small baby daughter. The woman’s mother-in-law blakmails her into faking her death by drowning because of an indiscretion. The film covers the woman’s life from then onwards ending up destitute and on the streets. Ill and dying, she ends up in court and is defended by her now grown up daughter, although neither knows who the other is. Her husband realises who she is as she lies dying in court and realises what his mother did. I thought the husband was played by Ken Howard but I cannot find it on his filmography. It’s driving me mad!!!!!