Publisher's Synopsis
According to Uncertain Endings: The World's Greatest Unsolved Mystery Stories by Otto Penzler (Penguin Books, 2006), this 2-part story is one of the two most famous riddle stories of all time, the other being "The Lady, or the Tiger?" by Frank Stockton. The Mysterious Card stories were published in a magazine called The Black Cat, the first part in 1895 and the conclusion in 1896.
