Agatha Christie publishes The Mystery of the Blue Train

The Mystery of the Blue Train is a work of detective fiction by Agatha Christie and first published in the UK by William Collins & Sons on March 29, 1928 and in the US by Dodd, Mead and Company later in the same year.

The UK edition retailed at seven shillings and sixpence (7/6) and the US edition at $2.00. The book features her detective Hercule Poirot.