In 1941 the European war ended in the Farthing Peace, a rapprochement between Britain and Nazi Germany. The balls and banquets of Britain's upper class never faltered, while British ships ferried "undesirables" across the Channel to board the cattle cars headed east. Peter Carmichael is commander of the Watch, Britain's distinctly British secret police. It's his job to warn the Prime Minister of treason, to arrest plotters, and to discover Jews. The midnight knock of a Watchman is the most dreaded sound in the realm. Now, in 1960, a global peace conference is convening in London, where...