We think we know Hitler's plans to dominate the world. But there's an untold story of how the Nazis waged a secret war across the world's oceans. Marine archaeologists and historians go in search of Hitler's secrets, hidden deep underwater. Scientific data combines with computer graphics to drain the oceans to investigate the lost wrecks of World War II.

Draining the Gulf of Mexico brings deadly secrets back to the surface, proving beyond doubt that the story of North America — through trade, slavery, war, the oil industry and even the death of the dinosaurs — can be understood only by looking deep below the waves.