Dive in dangerous waters with deep sea detectives as they attempt to retrieve clues that will reveal this decaying U-boat's identity. See how the breaking of Nazi codes altered the outcome of the war - and helped unravel the mystery behind this German U-boat. And finally, travel to Germany with the divers as they rewrite a part of World War II history, bring closure to families of the lost crew and discover how one man's life was spared.
Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.