The team investigates the cause of one of the world's greatest maritime mysteries.

The Fletchers brave shark-infested waters in search of two missing WWII submarines. What they discover ranks among the best finds of their careers.

The team tries to unlock the story of the Ghost Ship, despite wild seas and challenging dives.

The Laotian royal treasures sit on the bottom of the powerful and mysterious Mekong River.

The top-secret launching point for the atomic bombs, the remote volcanic island of Tinian.

The Hamilton and the Scourge, sunk in the War of 1812, rest in the depths of Lake Ontario.