While this was not the typical "cloak and dagger" espionage novel, it provided an interesting view of the changing nature of relations --- both political and economic --- between the U.S. and Britain in the immediate post-Second World War era.
A British officer --- Peter Cotton --- is sent from Europe to the U.S. in September 1945 to investigate the imminent breakup of the U.S. wartime intelligence agency, the OSS (Office of Strategic Services). Britain is broke and has sent representatives to Washington (led by the eminent economist John Maynard Keynes) to negotiate for a loan to help it address its pressing financial needs. Cotton, on attachment to the British Embassy, finds himself immersed in the subterfuge and machinations of Washington power politics. His experiences in and around Washington (as someone who lives in Washington, I enjoyed the author's descriptions of some areas of the city as they were in that time), which are superimposed over some of the larger events, give the reader the palpable feel of a world struggling to readjust from what was a "hot war" into a cold one.