This image is the cover for the book The Red House Mystery, Classics To Go

The Red House Mystery, Classics To Go

The setting is an eng 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… (Excerpt from Wikipedia)

A. A. (Alan Alexander) Milne

Alan Alexander Milne (18 January 1882 – 31 January 1956) was an English author, best known for his books about the teddy bear Winnie-the-Pooh and for various poems. Milne was a noted writer, primarily as a playwright, before the huge success of Pooh overshadowed all his previous work. Milne served in both World Wars, joining the British Army in World War I, and was a captain of the British Home Guard in World War II. (Wikipedia)