So, in the period leading up to his retirement, Poirot made up his mind to accept just twelve more cases: his self-imposed 'Labours'. Each would go down n the annals of crime as a heroic feat of deduction.
Agatha Christie is the most widely published author of all time, outsold only by the Bible and Shakespeare. Her books have sold more than a billion copies in English and another billion in a hundred foreign languages. She died in 1976, after a prolific career spanning six decades.