A brilliant codebreaker, top of her graduate class, Maggie Hope was nonetheless relegated to secretarial duties in wartime London—until an assignment at No. 10 Downing Street, working for Winston Churchill himself, affords Maggie access to the highest levels of government, and a chance to use her talents for the Allied cause. Susan Elia MacNeal's Barry Award-winning historical series (further nominated for Agatha, Macavity, and Edgar Awards) is inspired by the real-life secretaries and spies who worked for Britain's SOE in World War II.

Late in 1940, German troops sweep across the Continent, and England steels itself against invasion. In her second outing, after Mr. Churchill's Secretary, Maggie Hope completes her training to become a spy for MI-5, expecting to be sent abroad to gather intelligence for Britain. To her great disappointment, she is dispatched to pose as a math tutor to the young Princess Elizabeth. But life at Windsor Castle is soon upended when a lady-in-waiting is killed, and Maggie realizes she is in the thick of a conspiracy that places the entire royal family in peril.