A tense WWI spy thriller in which Colonel Duncan Grant (British star Brian Aherne, in his first talking role), parachutes into Germany to gather intelligence on the enemy’s secret ‘W Plan’ and to assist Allied POWs in digging escape tunnels.
Writer: Frank Launder, Miles Malleson, Victor Saville
Producer: Victor Saville
Director: Victor Saville
Director of Photography: Freddie Young, René Guissart, Werner Brandes