Nazi spies and murder intrude upon the uneasy exile of the Duke and Duchess of Windsor. In July 1942, Sir Harry Oakes, a wealthy businessman and acquaintance of the Duke and Duchess, was found murdered on Nassau. The murder is unsolved to this day. Could the killing be the result of Sir Harry's suspicions regarding the Duchess's friendship with a Nazi spy? Lang Reilly becomes embroiled in a struggle for newly surfaced evidence that uncovers a secret, radically pro-royalist society that will do anything to spare embarrassment to the Crown, past and present.