Hercule Poirot in literature Chocolate Box" but for some reason this reference was removed from the later editions. The Poirot books are still under copyright. "The Mysterious Affair at Styles" is now public domain in the US but will not become public domain in the UK until 2046 (70 years after Christie's death). Christie's grandson, Matthew Prichard, now owns the copyright to his grandmother's works. In 2014, the Christie estate authorised author Sophie Hannah to write a new Poirot book, "The Monogram Murders". "Short story collections listed as "ss"" Poirot settles down in London and opens a private detective agency. These are the short
Hercule Poirot behind as a "very unhappy old man". However, Poirot and Hastings reunite during the novels "The Big Four", "Peril at End House", "The ABC Murders", "Lord Edgware Dies" and "Dumb Witness" when Hastings arrives in England for business, with Poirot noting in "ABC Murders" that he enjoys having Hastings over because he feels that he always has his most interesting cases with Hastings. The two collaborate for the final time in "Curtain: Poirot's Last Case", when the seemingly-crippled Poirot asks Hastings to assist him in his final case. When the killer they are tracking nearly manipulates Hastings into committing murder,