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 precise men always to hanker after large and flamboyant women. Poirot had never been able to rid himself of the fatal fascination that the Countess held for him. Although letting the Countess escape was morally questionable, it was not uncommon. In "The Nemean Lion", Poirot sided with the criminal, Miss Amy Carnaby, allowing her to evade prosecution by blackmailing his client Sir Joseph Hoggins, who, Poirot discovered, had plans to commit murder. Poirot even sent Miss Carnaby two hundred pounds as a final payoff prior to the conclusion of her dog kidnapping campaign. In "The Murder of Roger Ackroyd", Poirot