Hercule Poirot and Captain Hastings travel to Merlinville-sur-Mer, France, to meet Paul Renauld, who has requested their help. When they arrive, local police greet them with the news that Renauld was found dead that morning, stabbed in the back with a knife and left in a newly dug grave adjacent to a local golf course. His wife, Eloise Renauld, claims masked men broke into the villa at 2 am, tied her up, and took her husband away with them. Upon inspecting his body, Eloise collapses with grief at seeing her dead husband. Monsieur Giraud of the Sûreté leads the police investigation, and resents Poirot's involvement.
