Murder on the Orient Express is a work of detective fiction by English writer Agatha Christie featuring the Belgian detective Hercule Poirot. It was first published in the United Kingdom by the Collins Crime Club on 1 January 1934. In the United States, it was published on 28 February 1934, under the title of Murder in the Calais Coach, by Dodd, Mead, and Company. The UK edition retailed at seven shillings and sixpence (7/6) and the US edition at $2.

Source: Wikipedia