Hercule Poirot sort of obsessive-compulsive" in Poirot. As mentioned in "Curtain" and "The Clocks", he is fond of classical music, particularly Mozart and Bach. In "The Mysterious Affair at Styles", Poirot operates as a fairly conventional, clue-based and logical detective; reflected in his vocabulary by two common phrases: his use of "the little grey cells" and "order and method". Hastings is irritated by the fact that Poirot sometimes conceals important details of his plans, as in "The Big Four". In this novel, Hastings is kept in the dark throughout the climax. This aspect of Poirot is less evident in the later novels,
Recurring characters in the Hercule Poirot stories an electric bill. Poirot described her as ""Unbelievably ugly and incredibly efficient. Anything that she mentioned as worth consideration usually was worth consideration."" She is an expert on nearly everything and plans to create the perfect filing system. She once worked for the government agent-turned-philanthropist, Parker Pyne. Whether this was during one of Poirot's numerous retirements or before she entered his employ is unknown. Japp is an Inspector at Scotland Yard and appears in many of the stories, trying to solve the cases Poirot is working on. Japp is an outward-looking, loud and sometimes inconsiderate man, and his relationship with