Expedition Unknown, America's First Train Robbers

Rewriting history, Josh helps discover a tomb at Petra's iconic Treasury. The twelve skeletons inside may belong to a royal family of Petra. State-of-the-art tech could finally decipher the charred fragments of ancient scrolls explaining Petra's fall.

Josh braves Puerto Rico's choppy seas to find a legendary missing plane. The crash of Pan Am's Clipper Endeavor changed commercial aviation forever. Josh and the team fight violent storms in the Atlantic as they hunt for the plane 2,000 feet below.

Josh tracks down the legend -- and treasure -- of an outlaw posse who terrorised the Midwest's railroads. The Reno Gang stole a fortune until a vigilante mob exacted violent justice. Josh tracks their lost loot to a cave hideout that could hold millions.

Josh braves the frigid, shark-infested waters off Cape Cod to dive the world's only confirmed pirate wreck. Joining a high-tech recovery mission, Josh chases the multi-million-dollar treasure of Black Sam Bellamy, including coins, gold, and jewels.

In a holiday search spanning three continents, Josh chases the true history of St. Nicholas, the real-life saint who has become known as Santa Claus. Following clues from Turkey to Italy, Josh gathers DNA to try to identify the saint's missing remains.