Summary: Josh investigates America's daring response to Pearl Harbor, which destroyed a vital Japanese base in the South Pacific. Using brand-new intel, Josh dives in with Project Recover to find 40 planes and 200 American heroes lost in Operation Hailstone.

Summary: Josh dives deep into the Navy's heroic Pearl Harbor counterattack, uncovering an eyewitness who shares vivid details of American soldiers' executions. New intel leads to a discovery that changes history -- the first US plane ever found from this battle.

Summary: Trekking deep into Mexico's narco-controlled jungles, Josh hunts for the last Mayan stronghold to ward off the Spanish conquistadors; he joins an expedition braving snakes, spiders and jaguars to uncover the legendary Sac Balam.

Summary: Hot on the trail of a massive stolen fortune, Josh chases the treasure of the infamous Spanish pirate Amaro Pargo. An exhaustive hunt of Pargo's stomping grounds in the Canary Islands leads Josh beneath an active volcano to dive for the pirate's hoard.

Summary: Tracking America's most infamous couple, Josh teams up with a former FBI agent to scour a legendary Bonnie and Clyde hideout. Then Josh hits the road on a 700-mile trip through the heartland to the site of the outlaw duo's most notorious shootout.

Summary: Josh helps recover the richest stash of lost treasure in the Americas; deploying cutting-edge technology and an armada of boats, the team dives the Caribbean to bring coins and jewels from the legendary Spanish galleon Maravillas to the surface.

Summary: Josh chases the treasure of legendary Viking Harald "Bluetooth" Gormsson. The discovery of a mysterious gold artifact sends Josh on a journey through Scandinavia and into remote northern European forests to uncover Bluetooth's tomb and fortune.

Summary: Josh searches for a top-secret WWII seaplane that crashed into the Pacific. Now, 70 years later, Josh joins a team scouring the ocean floor hundreds of feet below to find a lost aviation treasure -- the only XP5Y-1 still in existence.