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Double Sin and Other Stories is a short story collection written by Agatha Christie and first published in the US by Dodd, Mead and Company in 1961 and retailed for $3.50. The collection contains eight short stories and was not published in the UK; however all of the stories were published in other UK collections.

Dumb Witness is a detective fiction novel by British writer Agatha Christie, first published in the UK by the Collins Crime Club on 5 July 1937 and in the US by Dodd, Mead and Company later in the same year under the title of Poirot Loses a Client. The UK edition retailed at seven shillings and sixpence and the US …