1924, John Lane (The Bodley Head), March 1924, Hardcover, 310 pp 1925, Dodd Mead and Company (New York), 1925, Hardcover, 282 pp 1928, John Lane (The Bodley Head), March 1928, Hardcover (Cheap edition – two shillings) 1931, John Lane (The Bodley Head, February 1931), As part of the An Agatha Christie Omnibus along with The Mysterious Affair at Styles and The Murder on the Links, Hardback (Priced at seven shillings and sixpence; a cheaper edition at five shillings was published in October 1932) 1943, Dodd Mead and Company, As part of the Triple Threat along with Partners in Crime and The Mysterious Mr Quin), Hardback 1955, Pan Books, Paperback (Pan number 326) 192 pp 1956, Avon Books (New York), Avon number 716, Paperback 1958, Pan Books, Paperback (Great Pan G139) 1961, Bantam Books, Paperback, 198 pp[1]:124,149 1989, Fontana Books (Imprint of HarperCollins), Paperback, 192 pp 2007, Facsimile of 1924 UK first edition (HarperCollins), 5 November 2007, Hardcover, 326 pp