Murder on the Golf Course - Agatha Christie

An urgent distress call brings Hercule Poirot to France, where he finds that he has arrived too late. The man who summoned him, the mysterious millionaire, was gruesomely stabbed to death...and the corpse carelessly thrown into an open grave.

But Poirot knows things are not as they seem, and sets out to unravel the strange circumstances surrounding this baffling crime. Thus, he discovers that the path to knowing the identity of the killer lies in the folds of a crime committed twenty years ago!