Season 5

Through digital re-creations, scientists uncover mysteries from the bottom of the ocean.

The discovery of a wreck in the Baltic Sea leads to a treasure hunt, but what they find is even more precious: the story of Germany’s Dunkirk.

Draining Hawaii reveals Japan’s secret weapons, from mini subs to fighter planes, with the wreck of USS Arizona serving as a reminder of the forces unleashed.

Drowned shipwrecks and lost battlefields reveal secrets of America’s most famous siege and tell how Texas, against all odds, secured its independence.

New discoveries made at a lost city and a tale of human sacrifice offer a new insight into the rise and fall of the ancient Maya.

With real-time access to a US border security team, discover the extraordinary story of how Mexican cartels have smuggled cockiness into the US over the last 40 years.