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 to despise you. They say – a foreigner – he can't even speak English properly. ... Also I boast! An Englishman he says often, "A fellow who thinks as much of himself as that cannot be worth much." ... And so, you see, I put people off their guard. In later novels, Christie often uses the word "mountebank" when characters describe Poirot, showing that he has successfully passed himself off as a charlatan or fraud. Poirot's investigating techniques assist him solving cases; "For in the long run, either through a lie, or through truth, people were bound to give themselves