Josh Gates tackles an enduring maritime mystery, the first ship to be lost in the Great Lakes, The Griffon. Using a state of the art two-man submersible, Josh dives in to find a ship so elusive, it's known as "The Holy Grail of Shipwrecks."
Josh Gates stalks prey that has eluded capture for 25 years, the Golden Owl. A book of riddles gives cryptic clues to where the Owl statuette, worth half a million dollars, is hidden. Josh joins treasure hunters using new leads to chase the fortune.