The Red House Mystery is a "locked room" whodunnit by A. A. Milne, published in 1922. It was Milne's only mystery novel.

The setting is an English country house, where Mark Ablett has been entertaining a house party consisting of a widow and her marriageable daughter, a retired major, a wilful actress, and Bill Beverley, a young man about town. Mark's long-lost brother Robert, the black sheep of the family, arrives from Australia and shortly thereafter is found dead, shot through the head. Mark Ablett has disappeared, so Tony Gillingham, a stranger who has just arrived to call on his friend Bill, decides to investigate. Gillingham plays Sherlock Holmes to his younger counterpart's Doctor Watson; they progress almost playfully through the novel while the clues mount up and the theories abound. (wikipedia.org)

Media	Books Paperback Book (Book with soft cover and glued back)
Released	November 11, 2022
ISBN13	9781636374833
Publishers	Bibliotech Press
Pages	160
Dimensions	152 × 229 × 9 mm · 244 g
Language	English