Expedition Unknown

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.

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.

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.

Beneath an active volcano, Josh dives for an infamous pirate's treasure.

Tracking the outlaw couple, Josh scours the site of a notorious shootout.

Josh helps recover the richest stash of lost treasure in the Americas.

Josh chases the treasure of legendary Viking Harald "Bluetooth" Gormsson.

Josh searches the Pacific for a top-secret WWII seaplane.