Killer Strike

October 1944. After being credited with the first official U-Boat kill of the Second World War, German U-Boat commander Gunther Prien is abruptly recalled from patrol early and offered a secret mission to strike the Royal Navy at its home port of Scapa Flow. Fighting heavy currents and dodging blockships, Prien breaks into the anchorage, but there is not guarantee he will make it out again.