Джорджетт Хейер: Detection Unlimited

Slumped on a seat under an oak tree is old Sampson Warrenby, with a bullet through his brain. He is discovered by his niece Mavis, who is just one of ten people in the village in the running for chief suspect, having cause to dislike Warrenby intensely. Only Chief Inspector Hemingway can uncover which of the ten has turned hatred into murder.