Expedition Unknown Season 15 Episode release dates & where to watch

1. Hunt for Petra's Lost Tombs

With unprecedented access, Josh digs in front of Petra's treasury; searching for clues to the mysterious civilization that created one of the new Seven Wonders of the World, Josh rappels a seven-story cliff face to perform a high-tech scan.

2. Petra's Secrets Revealed

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.

3. Search for Pan Am's Clipper

Josh braves Puerto Rico's choppy seas to find a 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.

4. America's First Train Robbers

Josh tracks down the legend of an outlaw posse who terrorized 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.

5. Dive for America's Pirate Loot

Josh braves the 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.

6. 'Twas the Search for St. Nick Finale

In a search spanning 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.