Following the launch of Little Miss Marple and Mr. Poirot as Mr. Men and Little Miss characters on 23 October, Sanrio GMBH is inviting families and book lovers to take part in The Great Little Mystery Book Hunt in London and Manchester during the October half-term, starting Monday, 27 October 2025.
The free city-wide book hunt will see hundreds of copies of the first two titles hidden across the cities:
- Little Miss Marple: Muddle at the Vicarage
- Mr. Poirot: Mischief on the Nile
James Prichard, CEO and Chairman of Agatha Christie Limited and Agatha Christie’s great grandson, said:
“The partnership between Agatha Christie and the Mr Men Little Miss brands has been a natural and delightful collaboration, and we’re pleased to introduce these new mini mysteries for younger readers taking their first steps into the worlds of Hercule Poirot and Miss Marple. This charming – and mysterious! – book hunt campaign in London and Manchester will undoubtedly add to the excitement as kids and grownups discover, enjoy and share these fun stories again and again.”
These charming reimaginings of Agatha Christie’s most famous stories combine the iconic Mr. Men and Little Miss style with Agatha Christie’s classic detective adventures, with a further two titles arriving in February 2026.
Adam Hargreaves, author and son of Roger Hargreaves, creator of Mr. Men Little Miss, said: “This has been a fun project to work on, my first time writing mystery stories, so a bit of a challenge as well! These stories will help to inspire children to explore and discover something new that connects different generations. From Mr Men and Little Miss to Poirot and Miss Marple, something my father could never have imagined!”
The Great Little Mystery Book Hunt is the ultimate half-term adventure, giving readers of all ages the thrill of a treasure hunt and the chance to discover the brand-new stories, while stocks last.
MEN LITTLE MISS and AGATHA CHRISTIE: THE GREAT LITTLE MYSTERY BOOK HUNT LOCATIONS
London
- Battersea – Turnchapel Mews
- Camden – Lyndhurst Road
- City of London – Charterhouse Square, Barbican
- Greenwich – Aldeburgh Street
- Kensington & Chelsea – Warwick Road
- Lambeth – St Anselms Church, Kennington Road
- Streatham – Pathfield Road
- Twickenham – Staines Road
- Wimbledon – Dupont Road
Manchester
The Corn Exchange book vending machine
