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The Mysterious Affair at Styles: In the summer of 1917, Arthur Hastings travels to the Cavendish estate at Styles St. Mary to convalesce from his war injuries, but tensions simmer among the wealthy family. In the village, Hastings runs into his old friend Hercule Poirot, a war refugee now living in Styles. When the trouble at the estate turns criminal, Hastings turns to the Belgian detective for help.