An archeologist's beautiful but unpopular wife is murdered while the couple is in the Middle East excavating an historical site. At the request of local authorities, a vacationing Hercule Poirot takes on the case.

Poirot agrees to visit the husband of a famous actress to urge him to reconsider her request for a divorce. Edgware insists that he has already agreed to his wife's request. Yet, within twenty-four hours, he is found murdered.

Elinor Carlisle has been accused of killing her wealthy Aunt and a rival in love. When Poirot comes to the case he quickly finds motive, opportunity and means for Elinor to have done the double murder. But a tidy package is not enough to satisfy Poirot's curiosity, and he eventually pieces together an entirely different picture of what really happened in a case that appeared to be cut and dried.

Poirot in the last five episodes of the long running series. Alongside the familiar faces of Hasting, Japp, Miss Lemon, and Ariadne Oliver, Poirot risks everything to solve the most complex case in his career. Includes episodes: The Big-four; Elephants Can Remember; Dead Man's Folly; The Labours of Hercules; and Curtain: Poirot's Last Case.