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 character with the surname Lemesurier, as a nod to the short story "The Lemesurier Inheritance", which has otherwise not been included in the Poirot series. One other short story, "The Regatta Mystery", is not included in the Suchet series, as it is not generally considered part of the Poirot canon. First published in issue 546 of the Strand Magazine in June 1936 under the title "Poirot and the Regatta Mystery" (and illustrated by Jack M. Faulks), the story was later rewritten by Christie to change the detective from Hercule Poirot to Parker Pyne. It was as a Parker Pyne mystery