This is the last book I managed for #CloakAndDaggerChristmas for the "child detectives" prompt & it's an utter delight. It's a fictional reimagining of Agatha Christie as a young sleuth, with the inspiration for her creation of Hercule Poirot depicted as her childhood friend & partner in crime(-busting), Hector Perot. The 20th-century setting is beautifully-realised, the characters are lovable but not cutesy, & the mystery is solid. I enjoyed it!