Agatha Christie's classic, The Hollow, finds Poirot entangled in a nasty web of family secrets when he comes across a fresh murder at an English country manor.

A far-from-warm welcome greets Hercule Poirot as he arrives for lunch at Lucy Angkatell's country house. A man lies dying by the swimming pool, his blood dripping into the water. His wife stands over him, holding a revolver.

As Poirot investigates, he begins

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A collection of eighteen stories featuring Hercule Poirot includes "The Plymouth Express," a case that begins when the body of the daughter of a wealthy American industrialist is found stuffed under a train seat, and "Problem at Sea," which finds a disliked rich woman murdered in a locked room on a ship.