Classic mystery novel. According to Wikipedia: "Ernest William Hornung (7 June 1866 - 22 March 1921), known as Willie, was an English author, most famous for writing the Raffles series of novels about a gentleman thief in late Victorian London Hornung returned to England in February 1886, and married Constance ("Connie") Aimée Monica Doyle (1868-1924), the sister of his friend Sir Arthur Conan Doyle on 27 September 1893. Hornung worked as a journalist and also published the poems Bond and Free and Wooden Crosses in The Times. The character of A. J. Raffles, a "gentleman thief", first appeared in Cassell's Magazine in 1898 and the stories were later collected as The Amateur Cracksman (1899). Other titles in the series include The Black Mask (1901), A Thief in the Night (1905), and the full-length novel Mr. Justice Raffles (1909). He also co-wrote the play Raffles, The Amateur Cracksman with Eugene Presbrey in 1903."