Hercule Poirot - 'probably the greatest detective in the world' - is celebrated in the official Agatha Christie Calendar, including art inspired by the best-selling books - with 365 'little grey cells' in which to write your daily appointments! Hercule Poirot made his debut in Agatha Christie's very first novel, The Mysterious Affair at Styles, serialised in The Times in 1920.This 2026 wall calendar features gorgeous artworks inspired by the series of 39 Hercule Poirot paperbacks, including many of Agatha Christie's most famous titles: The Murder on the Links, Evil Under the Sun, Murder in Mesopotamia and Cat Among the Pigeons.Glorious renditions of these stories and more can adorn your favourite wall and help to celebrate the never-ending charm of 'the greatest detective in the world'.The little Belgian detective with the egg-shaped head appeared in 33 novels by Agatha Christie and more than 50 short stories, plus stage plays, comic strips, interactive games and multiple TV and film adaptations stretching back nearly a century - there's even a jigsaw. Now has his own finally makes his wall calendar debut in the official 2026 Agatha Christie Calendar from HarperCollins Publishers.