Based on the true story of Melbourne Johns, an aircraft factory foreman sent to France to prevent the Nazis getting hold of some vital equipment.

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Main Cast: Clifford Evans, Constance Cummings, Tommy Trinder, Gordon Jackson, Robert Morley, Owen Reynolds, Bill Blewitt, Charles Victor, John Williams, Anthony Ainley

Director: Charles Frend

Writers: J. B. Priestley, Leslie Arliss, Angus MacPhail, John Dighton

Editor: Robert Hamer

Cinematographer: Wilkie Cooper

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