A new investigation from Dr Mark Aldridge, exploring a lifetime of Agatha Christie's Miss Jane Marple. Winner of the 2025 H.R.F Keating Award for the best 2024 biography or critical book related to crime fiction. In Agatha Christie's Marple: Expert on Wickedness,'Agathologist' Dr Mark Aldridge looks at nearly a century of St Mary Mead's most famous resident and uses his own detective skills to uncover new information about Miss Jane Marple's appearances on page, stage, screen and beyond.Drawing on a range of material, some of which is newly discovered and previously unpublished, this book explores everything about Miss Marple, from her origins in a series of short stories penned by Christie, to the recent bestselling HarperCollins collection Marple: Twelve New Stories.This accessible, entertaining and illustrated guide to the world of Miss Marple pieces together the evidence in order to tell you everything you need to know about the world's favourite female detective.