Just off Florida's coast, Josh Gates braves shark-infested waters in search of an American ship sunk by a Nazi U-boat during WWII. Josh joins Tristan Guttridge who has a bold new strategy to use sharks as spies to uncover the wreck.

Just off Florida's coast, Josh Gates braves shark-infested waters in search of an American ship sunk by a Nazi U-boat during WWII. Josh joins Tristan Guttridge who has a bold new strategy to use sharks as spies to uncover the wreck.

Josh Gates travels to Cote d'Ivoire, West Africa to find the wreckage of an American military plane that disappeared in the closing days of World War II. Eighteen Women's Army Corps members were on board and are listed as MIA to this day

Josh Gates travels to Cote d'Ivoire, West Africa to find the wreckage of an American military plane that disappeared in the closing days of World War II. Eighteen Women's Army Corps members were on board and are listed as MIA to this day

The once-luxurious emporium of Rhapta disappeared in a cataclysm centuries ago. In search of Africa's Atlantis, Josh Gates dives into remote waters off of Zanzibar in search of ancient shipwrecks, exploring a possible ruin only visible at low tide.

The once-luxurious emporium of Rhapta disappeared in a cataclysm centuries ago. In search of Africa's Atlantis, Josh Gates dives into remote waters off of Zanzibar in search of ancient shipwrecks, exploring a possible ruin only visible at low tide.

Weeks before D-Day, Britain's Barracuda bomber took out the largest Nazi warship ever built -- but today, not a single Barracuda exists. Josh joins a one-of-a-kind restoration project and searches for wreckage far above the Arctic Circle.

Weeks before D-Day, Britain's Barracuda bomber took out the largest Nazi warship ever built -- but today, not a single Barracuda exists. Josh joins a one-of-a-kind restoration project and searches for wreckage far above the Arctic Circle.

Josh investigates the Doan Gang, loyalists to the British crown during the American Revolution. He uncovers a cache of stolen coins and locates the turncoats' hideout.

Josh investigates the Doan Gang, loyalists to the British crown during the American Revolution. He uncovers a cache of stolen coins and locates the turncoats' hideout.

Spanning Europe and Africa, Josh's chase for Alexander's remains and fortune ramps up. Clues mount in a flooded ruin beneath Alexandria, Egypt. Later, Josh gathers shocking evidence Alexander's body may actually lie in Venice's St. Mark's Cathedral.

Spanning Europe and Africa, Josh's chase for Alexander's remains and fortune ramps up. Clues mount in a flooded ruin beneath Alexandria, Egypt. Later, Josh gathers shocking evidence Alexander's body may actually lie in Venice's St. Mark's Cathedral.

Josh is on the hunt for the lost tomb of Alexander the Great, the conqueror who ruled over one of the largest empires in history until his untimely demise. The location of his tomb is one of the most sought-after mysteries of all time.

Josh is on the hunt for the lost tomb of Alexander the Great, the conqueror who ruled over one of the largest empires in history until his untimely demise. The location of his tomb is one of the most sought-after mysteries of all time.