In an alternate universe, the Third Reich occupies Europe, while England remains free thanks to a peace brokered by the Farthing Set, a political faction within the Conservatives. A murder among this group at a country party sets two narratives in motion, one the bubbly daughter of the Farthing's leaders who dared to marry a Jewish man and the other the Scotland Yard Inspector set upon the trail.

The world building is creative, detailed, and very enjoyable. I had thought the two narratives would come together, that something would occur to make use of the dark feelings and themes of the story but they didn't.