Hercule Poirot met his lifelong friend, Captain Arthur Hastings, and solved the first of his cases to be published, "The Mysterious Affair at Styles". It is clear that Hastings and Poirot are already friends when they meet in Chapter 2 of the novel, as Hastings tells Cynthia that he has not seen him for "some years". Particulars such as the date of 1916 for the case and that Hastings had met Poirot in Belgium, are given in "Curtain: Poirot's Last Case", Chapter 1. After that case, Poirot apparently came to the attention of the British secret service and undertook cases for the
Hercule Poirot away..." At the end, Poirot usually reveals his description of the sequence of events and his deductions to a room of suspects, often leading to the culprit's apprehension. Christie was purposely vague about Poirot's origins, as he is thought to be an elderly man even in the early novels. In "An Autobiography," she admitted that she already imagined him to be an old man in 1920. At the time, however, she had no idea she would write works featuring him for decades to come. A brief passage in "The Big Four" provides original information about Poirot's birth or at least