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 to Hastings, it was chosen by Poirot "entirely on account of its strict geometrical appearance and proportion" and described as the "newest type of service flat". (The Florin Court building was actually built in 1936, decades after Poirot fictionally moved in.) His first case in this period was "The Affair at the Victory Ball", which allowed Poirot to enter high society and begin his career as a private detective. Between the world wars, Poirot travelled all over Europe, Africa, Asia, and half of South America investigating crimes and solving murders. Most of his cases occurred during this time and he