""A Duke and His Double"" is a novel written by Edward Sims Van Zile and first published in 1903. The story revolves around a young American man named John Rawnley, who bears a striking resemblance to the Duke of Balmoral, a wealthy and powerful member of the British aristocracy. When the Duke suddenly dies, John is recruited by the Duke's closest advisors to take his place and assume all of his responsibilities. John is reluctant at first, but eventually...