After years of stealing from the rich and giving to the poor, Ellie McDonnell and her family have turned over a new leaf as they help the British government's World War II spy effort. In this sequel to A Peculiar Combination, Ellie misses that old adrenaline rush, so when Major Ramsey turns up with another job, she can't say no. A woman's body has been found in the Thames. It's soon clear this woman was involved in espionage, but whose side was she on? And who wanted her dead?