The murder on the links

Stabbed in the backA pieced of lead piping nearbyIt should be a simple case… Poirot is summoned to France, but arrives too late to save his client, whose body now lies face down in a shallow grave on a golf course. Why is the dead man wearing his son’s overcoat? And who was the intended recipient of the love-letter in the pocket? Before Poirot can answer these questions, the case is turned upside down by the discovery of a second, identically murdered corpse…