The A. A. Milne Mystery Omnibus ( 2-books-in-1) contains The Red house and Four days' wonder

Rare crime fiction whodunit from the creator of Winnie the Pooh.

The Red House Mystery is set in an English country house, where Mark Ablett is hosting a house party consisting of a widow and her young daughter, a retired major, an 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 look up his friend Bill, decides to investigate. Gillingham plays Holmes to Beverly's Watson; and they progress almost playfully through the novel while both clues and theories multiply.

Four Days Wonder is a classic comedy mystery novel by Milne completing his forays into crime fiction and compiled for the first time. A young woman obsessed with murder mysteries goes to visit her aunt at a country house, only to find her dead. Invigorated by the excitement she launches an investigation.

"light, amusing in the Punch style, written with a deceptive smoothness that is not as easy as it looks" Raymond Chandler