HELL BELOW

Witness the events that turned ace U-boat commander Otto Kretschmer from Nazi idol to prisoner of war.

Sail into New York Harbor and learn the chilling story of Hitler's campaign to bring World War II to America's shores.

See how a new wave of aggressive U.S. sub commanders radically changed the Navy's WWII strategy, and in turn, the war.

Enter The Devil's Gorge with two Allied convoys on a collision course with the largest Nazi wolf pack ever assembled.

Relive the incredible patrol of submarine USS Harder and its multiple victories in enemy-controlled seas.

Man the battle stations with Commander O'Kane as we track the famous last patrol of America's deadliest sub, USS Tang.