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The Mystery of the Blue Train is a work of detective fiction by Agatha Christie, first published in the United Kingdom by William Collins & Sons on 29 March 1928 and in the United States by Dodd, Mead and Company later in the same year. The UK edition retailed at seven shillings and sixpence and the US edition at …

The Mystery of the Blue Train is a work of detective fiction by Agatha Christie, first published in the United Kingdom by William Collins & Sons on 29 March 1928 and in the United States by Dodd, Mead and Company later in the same year. The UK edition retailed at seven shillings and sixpence and the US edition at …

The Pale Horse is a work of detective fiction by Agatha Christie and first published in the UK by the Collins Crime Club on 6 November 1961 and in the US by Dodd, Mead and Company the following year. The UK edition retailed at fifteen shillings and the US edition at $3.75. The novel features her novelist detective …