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.

Overview
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Brian Aherne
Col. Duncan Grant

George Merritt
Ulrich Muller

C.M. Hallard
Commander-in-Chief

Frederick Lloyd
Col. Jervois
BG
B. Gregory
Flight Commander Mayne

Mary Jerrold
Frau Muller

Madeleine Carroll
Rosa Hartmann
CH
Clifford Heatherley
Proprietor

Austin Trevor
Captain of Military Police