For the first time the Allied Officers of three nations return to Colditz to reopen the tunnels and retrace the routes of their legendary escapes.

With as many guards as prisoners, Colditz was considered escape-proof. But it wasn’t long before the officers pooled their talents to create the greatest escape academy of the war. Often for the first time, the English, French, Dutch and Polish officers and their guards describe their experiences.

Twelve years in the making, the film uses over 50 original interviews to capture the true stories behind the castle’s infamous walls.