"A modern 'Labours of Hercules ...' The idea appeals to Hercule Poirot's vanity. Before he retires to grow superior vegetables, he will undertake just twelve more cases. All of them will resemble the remarkable feats of strength performed by that hero of ancient Greece, the first Hercules. But when the modern Hercules faces his comtemporary monsters, his only weapon will be his brilliant powers of deduction ..." - back cover.