For the first ime in one volume are Agatha Christie's first two mysteries that introduced the world to Hercule Poirot and to Tommy and Tuppence Beresford, all sleuths who have starred in the PBS Mystery! series: with a sudden death as the initiation of his career, Hercule Poirot calls upon the sprawling estate of the Styles Court to identify the murderer of a wealthy heiress from a crowd of jealous relatives and a fortune-hunting husband; and while trying to locate a missing woman known to have been carrying secret documents at the time of her disappearance, Tommy and Tuppence discover a deadly web of espionage and murder in the aftermath of the Great War.