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,
Hercule Poirot for five or six people to be on the spot when B is murdered and all have a motive for killing B." She first met Poirot in the story "Cards on the Table" and has been bothering him ever since. Poirot's secretary, Miss Felicity Lemon, has few human weaknesses. The only mistakes she makes within the series are a typing error during the events of "Hickory Dickory Dock" and the mis-mailing of an electricity bill, although she was worried about strange events surrounding her sister at the time. Poirot described her as being "Unbelievably ugly and incredibly efficient. Anything that