A young couple who've eloped (Robert Montgomery and Helen Hayes) return to New York and begin spending time with his family - his parents, two brothers and their wives, and his nephew. It slowly turns into a nightmare for her, because the mother is manipulative of her son, the sisters-in-law mix in cutting remarks with their pleasantries, and one of the brothers-in-law is an immature bore (one of the things he does is surprise women by running his hand along their back and making a slide whistle sound).
Her marriage begins to deteriorate because her husband sides with his family in their assessment that she's "high hatting" them. While it's true that she's more worldly and refined, she doesn't look down her nose at them at all, and in reality suffers from their barbs at the weekly get togethers. Enter the nephew (John Beal), who is also a bit of an outcast in the family, because he's interested in things like architecture and travel. He soon develops feelings for his aunt that go beyond normal affection, but despite her own unhappiness, she reminds him of how inappropriate it is.
You might divine that this is a pre-Code film because it deals with the incestual love a nephew has for his aunt, which, even if it isn't by blood, is obviously a taboo subject, or maybe because of a scene with a female model in the background of a sculpting class draped with thin sheer fabric. Despite how salacious it sounds (or how production stills show the model from the side, close-up and almost entirely nude), it feels pre-Code mostly because of how honest it is. There is such a realistic portrayal of the family's passive aggressiveness here that it's very frustrating and claustrophobic, and the script has a tight, very modern feel to it, particularly in the ensemble scenes.
I love Margaret Hamilton in this as one of the sister-in-laws, and Helen Hayes is as radiant as ever. Louise Closser Hale is great as the mother too, even if the character is irritating, and it's notable that it was her last film, as she would die at 60 two days before the film was released. It zips along at 77 minutes, never lagging, and while I wish it had ended a little differently, it made for a satisfying watch.