It's 1938 and Maisie Dobbs is back in England. The German government has agreed to release a British subject from prison, but only if he is handed over to a family member. Because the man's wife is bedridden and his daughter has been killed in an accident, the Secret Service wants Maisie - who bears a striking resemblance to the daughter - to retrieve him. However, the man she holds responsible for her husband's death has learned of her journey, and is also desperate for her help...