Hercule Poirot available to solve mysteries at an English country house. At the time of Christie's writing, it was considered patriotic to express sympathy towards the Belgians, since the invasion of their country had constituted Britain's "casus belli" for entering World War I, and British wartime propaganda emphasised the "Rape of Belgium". Poirot first appeared in "The Mysterious Affair at Styles" (published in 1920) and exited in "Curtain" (published in 1975). Following the latter, Poirot was the only fictional character to receive an obituary on the front page of "The New York Times". By 1930, Agatha Christie found Poirot "insufferable", and, by
Agatha Christie's Poirot that the story was first published in book format in "The Regatta Mystery and Other Stories" (published in the United States in 1939). Although the story is now associated with Parker Pyne, it was included in the 2008 omnibus volume "Hercule Poirot: the Complete Short Stories", which was the first public association of the story with Hercule Poirot since the original Strand Magazine publication of 1936. Aside from "Poirot and the Regatta Mystery", the one authentic Hercule Poirot story not included in any form, whole or partial, in the "Agatha Christie's Poirot" series is the 1930 play "Black Coffee". Although