Ask a Policeman (1939)

Turnbottom Round prides itself as the village without crime; there has not been an arrest recorded by the local police for years. Unfortunately, this is more to do with the inability of Sgt. Dudfoot and his constables Jerry and Harbottle to so much as recognize a crime. With their jobs on the line, the trio attempt to stage their own crime, only to inadvertently uncover a smuggling ring and a headless horseman.