The King of Clubs is a short story by Agatha Christie which was first published in The Sketch in March 1923 in the U.K. The story was published in the U.S. in The Blue Book Magazine in November 1923. In 1951, the story appeared as part of the anthology The Underdog and Other Stories published in the U.S. In the U.K., the story was anthologized and published as part of Poirot's Early Cases in 1974.