Hastings is today strongly associated with Poirot, due more to the television adaptations than to the novels. Many of the early TV episodes of "Agatha Christie's Poirot" were adaptations of short stories, in most of which he appeared in print. A few were stories into which he had been adapted (for example, "Murder in the Mews"). In Christie's original writings, however, Hastings is not in every short story or novel. He is not a character in either "Death on the Nile" or "Murder on the Orient Express", the two best-known Poirot novels. Of the twenty-two Poirot novels published between 1920 and 1937, he appears in seven. Moreover, when Christie expanded "The Submarine Plans" (1923) as "The Incredible Theft" (1937), she removed Hastings.