The Red House Mystery (1922) is a detective novel by A.A. Milne. Known more for his series of Winnie-the-Pooh stories and poems for children, Milne also wrote novels and plays for adults, including this successful whodunnit. The Red House Mystery, Milne's only detective novel, was highly successful upon publication and is noted for its use of an amateur sleuth as well as its intricate, puzzle-like plot. Despite earning the ire of...