There’s Always Tomorrow (1956): directed by Douglas Sirk
Beyond providing an arena in which to reunite Double Indemnity co-stars Barbara Stanwyck (the best!) and Fred MacMurray (him too!), this 1956 melodrama (as if Douglas Sirk made any other kind) goes right for your ventricles with a simple story of a father and toy magnate (MacMurray) who’s reached a breaking point with a family that takes him for granted, and faces temptation when an old flame (Stanwyck, duh) saunters back into his toy factory late one night. It’s an unusually vulnerable character for a leading man of the era, and one that stands in stark contrast to some of MacMurray’s more well-known roles.