A dinner party guest compares Hercule Poirot to the Greek hero Hercules. Proving his skill, Poirot takes on twelve monumental cases corresponding to the twelve labors of Hercules. This collection includes The Nemean Lion, The Lernean Hydra, The Arcadian Deer, The Erymanthian Boar, The Augean Stables, The Stymphalean Birds, The Cretan Bull, The Horses of Diomedes, The Girdle of Hyppolita, The Flock of Geryon, The Apples of the Hesperides, and The Capture of Cerberus.