''The Conqueror Inn'' by E. R. Punshon (d. 1956), public domain. The story follows a methodical detective rising through the ranks of Scotland Yard. Set against the atmospheric backdrop of the English countryside during World War II, it blends traditional detective fiction with wartime home front anxieties.
The setting revolves around the remote Conqueror Inn, a wayside pub rumored to be the oldest licensed house in England. Detective Sergeant Bobby Owen discovers a mysterious case filled with banknotes. A gruesome discovery follows when a corpse is found mutilated inside its own grave.
The investigation quickly pulls in black marketeers, lorry drivers, local army camps, and even the IRA. Bobby must filter out a web of red herrings and track down a ruthless killer using the chaos of the war as a cover.