When sixteen-year-old Quincy Bruce goes to live with her Aunt Addy, she has no idea that what happened thirteen years earlier in wartime London can destroy her future as a musician. Her parents have gone to Africa as missionaries, leaving Quincy with her free-spirited and lively aunt, a war widow, and the only person who supports Quincy's ambition to become a pianist. When another aunt accuses Addy of being the inspiration for the adulterous woman in Nathan Waterstone's infamous novel, "The Lady," Quincy vows to prove her wrong. As Quincy settles into her new life with Addy, she sets about unraveling the secrets of Addy's life, and of Nathan's, in an effort to discover the true identity of the Lady. When she makes a discovery of a different type, Quincy's dreams of becoming pianist come crashing down.