The U-boat wolf packs were the scourge of the North Atlantic. For their commanders, a mission could only end with victory or death. There was no surrender - until U-700. Her capture offered the British fleet their first glimpse of the secret armaments that held the key to Allied survival - and plunged the young German officer who gave up his submarine into a nightmare of persecution and guilt in an English prison camp. The charge of cowardice would darken Leutnant Bernhard Berndt's remaining days - until he embarked on a course of action that would hurtle him once more towards destruction.