Wounded by a Nazi bomber, a postman dies on the operating table in rural England. But was his death accidental or murder? Enter Inspector Cockrill (Alastair Sim), an irrepressibly cheerful Scotland Yard sleuth with a penchant for annoying suspects into revealing hidden motives. An unconventional whodunit from the brilliant team of Sidney Gilliat and Frank Launder, this wartime classic also stars Trevor Howard as one of the suspected doctors.