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 inactive lifestyle during which he concerns himself with studying famous unsolved cases of the past and reading detective novels. He even writes a book about mystery fiction in which he deals sternly with Edgar Allan Poe and Wilkie Collins. In the absence of a more appropriate puzzle, he solves such inconsequential domestic riddles as the presence of three pieces of orange peel in his umbrella stand. Poirot (and, it is reasonable to suppose, his creator) becomes increasingly bemused by the vulgarism of the up-and-coming generation's young people. In "Hickory Dickory Dock", he investigates the strange goings on in a student