Perhaps Hercule Poirot made it seem like child's play to solve The Murder of Roger Ackroyd, so in this 1927 follow-up, he must thwart an international group of four criminal masterminds who are out to rule the world. As he travels from London's Chinatown to Paris, Belgium, and Italy's South Tyrol, Poirot will need plenty of help, but Arthur Hastings and Scotland Yard's Inspector Japp are all the help he is likely to get. To save the day (and his life), Poirot will adopt a ruse that may be his most brilliant ever.