Agatha Christie's most famous detectives receive the Mr Men Little Miss treatment! Agatha Christie's Hercule Poirot meets Roger Hargreaves' Mr Men and Little Miss in this new story, written and illustrated by Adam Hargreaves. Loosely inspired by Murder on the Orient Express, but with a charming and humorous twist for younger fans, this is a mystery that requires order and method to solve it! Have you met Mr Poirot - a new Mr. Men character who is a famous Belgian detective, like someone Agatha Christie fans have already met?! Mr Poirot is travelling on the Opulent Express to Paris, where his fellow passengers include the wealthy business tycoon Mr Rude and other intriguing passengers such as Madame Magic, Colonel Impossible and Professor Inventor. So, when there appears to be a thief onboard the train, it is time for Mr Poirot to use his little grey cells to investigate this seemingly impossible mystery. This is the second Mr Poirot mystery in a mischievous new partnership, publishing alongside Little Miss Marple: Bump in the Library. The first two titles are also available: Little Miss Marple: Muddle at the Vicarage and Mr Poirot: Mischief on the Nile. * A thoroughly mysterious (and mischievous) partnership between two British institutions * Brand new stories, inspired by classic Christie novels and reverently brought to life by Adam Hargreaves * Following on from the success of the first Mr Poirot and Little Miss Marple books, which captured the media's attention as well as selling well * Mr. Men Little Miss is one of the best-selling picture book brands of all time and celebrates 55 years in 2026 * Roger Hargreaves is one of only 5 authors to achieve sales of over 20m units in the UK (2025 Bookscan) * Agatha Christie's books have sold over a billion copies in English.
* Agatha Christie is the most widely published author of all time in any language Competition: Sherlock holmes children's collection;secret seven;dotty;detective friends;minute mysteries;investigators;Breakfast club adventures;danger gang;young;dr who. arthur conan doyle;arianna belluci;enid blyton;clara vulliamy;unity b;marina bowman;tom fletcher;marcus rashford;agatha christie;david walliams.