This is book number 26 in the Hercule Poirot Mysteries (Audio) series.
In appearance Hercule Poirot hardly resembled anancient Greek hero. Yet--reasoned the detective--like Hercules he had been responsible for riddingsociety of some of its most unpleasant monsters.
So, in the period leading up to his retirement, Poirotmakes up his mind to accept just twelve more cases: his self-imposed "Labors." Each would go down in theannals of crime as a heroic feat of deduction.