In the McKenzie prisoner of war camp in north Scotland, the camp’s rules and routines are tested when Kapitän zur See Willi Schlüter Willi Schlüter pushes the limits of authority. His Kriegsmarine swagger clashes with the by-the-book command of Major Perry Ian Hendry, as Perry enforces a grim reprisal policy: British officers are kept under restraint in Germany, so he must order the handcuffing of an equal number of German officers. The German prisoners respond with stubborn silence at roll call, and when guards attempt to marshal them out of the barracks, the tension spikes into outright aggression as the Germans ambush the guards.
Captain Jack Connor Brian Keith, reassigned from British Army Intelligence after a string of off-duty indiscretions, is pulled into the camp’s volatile atmosphere by his patron General Kerr Jack Watson. Connor, a former crime reporter, is tasked with stabilizing the situation and effectively assumes operational control from Perry. The camp becomes a proving ground for competing ideologies among the prisoners: the submariners led by Schlüter clash with a faction of Luftwaffe prisoners who show little interest in mutiny or escape, challenging Schlüter’s tactic-heavy approach.
The mood thickens as a tunnel under construction inches toward completion, raising the stakes for both sides. The German plan for a coordinated breakout grows more urgent, and the pressure builds after a brutal confrontation in which a Luftwaffe man named Leutnant Neuchl [Horst Janson] is savagely beaten during a clash between prisoners and the guards. In a tense moment, two Germans disguised as British soldiers slip away from the chaos. Neuchl, delirious with fear, repeats the ominous phrase, and the hospital becomes a stage for a cover-up when Neuchl is murdered to prevent questions from piercing the veil of the escape plot.
Connor asserts that Neuchl is alive long enough to hint at the escape’s progress, while privately he has had a cryptographer break the letters' code used by POWs to reach Germany. He believes the best way to stop the escape threat is to permit some prisoners to slip out and be captured by special patrols rather than to try an all-out interdiction. Schlüter, sensing the risk of discovery, presses ahead with the plan to break out even as the rain-soaked attic drains soil from the tunnel into a vulnerable area.
The escape plan reaches a fever pitch when Schlüter triggers a cave-in that collapses a barrack full of Luftwaffe prisoners, diverting attention away from the tunnel and buying time for a small, determined group to flee toward the coast. Schlüter and his comrades slip away, slipping into a waiting lorry that will carry them to a prearranged rendezvous with a German submarine. Connor’s patrols, aided by local police and the Royal Navy, close in, but the disguised vehicle slips through the net and reaches the coast just as a motor torpedo boat (MTB) is summoned to the scene.
As the rafts press toward the submarine, the tension peaks: the vehicle crashes through the landscape, and the ensuing fire draws the attention of a spotter aircraft that Connor is piloting. The MTB arrives in time to force a submarine dive, leaving Schlüter and the escapees stranded in the surf and sky-high tension between pursuit and retreat. From above, Connor watches the scene unfold and murmurs the grim verdict about their shared predicament: they are both “in the shithouse now.”
Throughout the ordeal, the cast threads a web of loyalties and rivalries. Major Perry’s steady, procedural approach collides with Connor’s improvisational instincts; Schlüter’s indefatigable drive to reclaim the tunnel’s secrets tests every line of duty. The men on both sides navigate a fragile balance between duty, courage, and the fear that a single misstep could unleash chaos on both camps. In this high-stakes cat-and-mouse game, the question remains whether the escape will become a victory or a grim reminder of the brutal calculus of war.
- Leutnant Neuchl Horst Janson
- Lieutenant Hall Constantine Gregory
- Lieutenant Hochbauer Eric Allan
- Adjutant David Kelly
- Hauptmann Kranz John Abineri
- Leutnant Schmidt Tom Kempinski
- Leutnant Wolff Alexander Allerson
- A.T.S. Sergeant Bell Caroline Mortimer
- Corporal Jean Watt Mary Larkin
- Ferry Captain Noel Purcell
- Ingenieur-Offizier Unger Michael Sheard
> "twenty-eight submariners"
> "in the shithouse now"
