Join famed underwater explorer Dr. Robert Ballard as a rare find off the coast of Israel sends him, a team of experts, and a National Geographic crew on a quest to solve an archaeological mystery. See the oldest shipwrecks ever found in the deep Mediterranean, relive the excitement of an ancient wreck discovered by a U.S. Navy nuclear sub, and probe the secrets of these unprecedented archaeological time capsules and the clues they offer to an extraordinary, ancient civilization that dates back to biblical times.

In 1938, the Nazis launched expeditions to the Antarctic and Tibet in search of proof of an ancient master race. Was there any basis for these bizarre missions? Who financed them?