Hitler"s Lost SubAmerica had just entered WWII, but German U-boats, Hitler"s deadly warships of the deep, were stalking US targets, sinking over 400 ships just miles from American shores. Fifty years later, a team of divers discovered an unidentified German U-boat deep in the waters off the New Jersey coast. What boat was it? And what secret mission brought it there?Hitler"s Sunken SecretOne of the most daring resistance operations of World War II was the 1944 sinking of the Norwegian ferry Hydro, with its cargo of "heavy water" destined for the Naziís secret atomic bomb project. If the Germans had obtained a large supply, it could have helped their physicists develop nuclear weapons that would have made the Third Reich invincible.The Great EscapeMore than sixty years ago, over six hundred Allied prisoners banded together to dig three highly sophisticated tunnels, code-named Tom, Dick, and Harry. Each tunnel was outfitted with railways, electric lights, and underground air pumpsóall under the noses of the German guards.Nazi Prison EscapeThe Nazis were confident Colditz Castle in Germany was a formidable prison for Allied officers. The captive Allies, however, disagreed. If it meant freedom and an opportunity to re-join the battle against Hitler, no risk was too great to discourage their escape attempts.Decoding Nazi SecretsIn 1940, Europe lay under the Nazi jackboot. But Churchill had a secret weapon: a group of American and British mathematicians, crossword fanatics, linguists, and chess champions who decoded the ìunbreakableî Nazi Enigma and changed the course of history.