Presents twelve stories in which the ingenious Hercule Poirot uses his wits and detective skills to unravel the mysterious.

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 -- The capture of Cerberus.