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
Murder in the Mews story was the strongest and that "Triangle at Rhodes" the weakest because, "the psychology of the characters is insufficiently developed to make the solution either predictable or plausible". Isaac Anderson of "The New York Times Book Review" of 27 June 1937 said, "The four stories in this book are all fully up to the Agatha Christie-Hercule Poirot standard, and are about as varied in plot and in the characters involved as it is possible for detective stories to be." "The Scotsman" of 1 April 1937 said "To the ingenuity of Mrs Agatha Christie there is no end. She writes with