Mr. Justice Raffles is a 1909 novel written by E.W. Hornung. It featured his popular character A. J. Raffles a well-known cricketer and gentleman thief. It was the fourth and last in his four Raffles books which had begun with The Amateur Cracksman in 1899. Unlike the three previous works, the book was a full-length novel and featured darker elements than the earlier collections of short stories. In it a jaded Raffles is growing increasingly cynical about British high society. He encounters Dan Levy, an unscrupulous moneylender, who manages to entrap a number of young men, mostly sons of the wealthy, by giving them loans and then charging huge amounts of interest. Raffles takes it upon himself to teach Levy a lesson.