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 in literature story years (25 short stories and only 4 novels). Christie increased her novel production during this time (14 novels, 21 total short stories and one theatre play). Twelve short stories form "The Labours of Hercules". The other short stories listed here take place in this period but were published before and after the publication of "Hercules". The theatre play is named "Black Coffee" and was written by Agatha Christie, who stated a frustration with other stage adaptations of her Poirot mysteries. In 1998, author Charles Osborne adapted the play into a novel. A new detective, Miss Marple, enters the stage