In the 2-hour season premiere of Expedition Unknown, adventurer Josh Gates hunts down new evidence on the disappearance of Amelia Earhart. He treks to uncharted tribal lands in Papua New Guinea and ends his journey in Fiji, hoping to uncover the pilot’s remains.

Josh travels to the remote and land-mine-riddled jungles of Cambodia to investigate the lost city of the Khmer Empire and search for a mystical relic that gave its god king the power to incinerate his enemies more than 1,000 years ago.

Josh is on the trail of Russia’s missing Amber Panels, priceless pieces of art stolen by the Nazis during WWII. After starting in St. Petersburg, Russia, and getting exposed to the local culture, Josh makes a brief pit stop in Berlin to marvel at the city’s amazing turnaround since the end of the Cold War.

Josh tries putting the legend of Jesse James' missing gold to rest, as he searches the American Midwest, searching for the treasure.

Josh Gates travels through Peru in search for the legendary Incan lost city of Paititi. His journey takes him from the historic Cusco, to the heights of Machu Picchu, and finally into the Amazon's dark and mysterious jungles.

Josh joins archaeologists in Panama as they search for the Satisfaction, the sunken flagship of legendary pirate Captain Henry Morgan. But first he must understand the man behind the rum who attacked Panama City looking for treasure. He also searches one of many shipwrecks near Fort San Lorenzo at the reef, where Morgan's ship ran aground.

Josh scours the Virginia backcountry in search of the legendary Thomas Beale treasure, which would be worth millions today. Since encrypted codes are hiding its whereabouts, Josh takes a detour to Philadelphia to uncover missing pieces of the puzzle.

While investigating the fall of the remarkable Mayan Empire, Josh unearths human skulls and ancient Mayan sacrificial altars in the caverns underneath the jungles and ruins of Mexico.

Josh travels to Peru to investigate the giant geoglyphs drawn into the earth by the ancient Nazca tribes and while studying newly found lines joining a Nazca psychadelic ritual, Josh discovers the meaning behind the mysterious tracings.

Josh searches for the missing mystical Honjo sword in Japan in ancient shrines hidden in the mountains and underground tunnels.

The ancient cursed Golden Bell of King Dhammazedi.