Was the Duchess of Windsor a Nazi spy? In July 1943, a sensational murder took place in the British colony of The Bahamas. Sir Harry Oakes, a wealthy businessman, was found murdered at his estate. Among his friends were The Duke and Duchess of Windsor, who had been exiled there during World War II by the British government due to the sympathies the Duke had shown toward the Nazis. The murder of Sir Harry Oakes is unsolved to this day. Could the killing be the result of Sir Harry Oakes's suspicions that the Duchess was providing information to the Nazis? Seventy years after the fact, Lang Reilly becomes involved in a struggle for newly surfaced evidence, and he must risk his life to uncover the Nassau secret.