Josh answers questions from viewers, reveals new developments in intriguing unfinished investigations, and pulls back the curtain to reveal what really happens behind the scenes in this special episode of Expedition Unknown.

Host Josh Gates counts down his Top 10 most dangerous adventures from Season 1.

Josh visits Portugal and Haiti to discover whether Christopher Columbus was history's greatest hero or villain. He also hopes to find the remnants of Columbus' legendary flagship, the Santa Maria.

The search for Christopher Columbus continues with finding his missing remains. Gates follows his five-century voyage across two continents to search for his final resting place believed to be at Columbus Lighthouse in Santo Domingo, Dominican Republic or at Cathedral of Saint Mary of the See in Seville, Spain, both countries laying claim to his bones.

Inspired by his adventures while filming Expedition Unknown, Josh shares tips on the best way to travel in this special episode. Josh also features bonus scenes and hilarious outtakes from some of his recent expeditions.

Josh Gates and his cameraman, Evan B. Stone, count down their top ten close calls and strange situations, featuring bonus, behind the scenes footage from Expedition Unknown's investigations.

Josh travels to Mongolia's 'Forbidden Zone' to find Genghis Khan's tomb.

Josh Gates and his crew gather, along with archaeologists Dr Oren Gutfeld, to unravel more of teh mysteries of the Dead Sea Scrolls.

Josh Gates and his expedition team reconvene once more to dig deeper into their search for the treasure of the Copper Scroll, and reveal more discoveries and exclusive, never-before-seen footage.

Explorer Josh Gates is diving into shark infested waters to investigate one of the ocean's greatest mysteries what drove the sixty foot long Megalodon shark to extinction?

Later, Josh dives deep under the Indian Ocean’s waters to chase down a pirate’s billion-dollar treasure.

At EXU Headquarters, Josh Gates is joined by historian Gary Sterne and military veteran Captain Dale Dye to analyze unseen footage, unravel new insights, and dig into more secrets of D-Day.

Josh Gates and Expedition X investigators Jessica Chobot and Phil Torres dig into unseen footage captured in their investigations into disappearance of Northwest Flight 2501 and the Mothman.

Josh Gates and the Expedition X team are joined by Ghost Nation's Jason Hawes to delve into strange occurrences on The Island Of The Dolls. Josh continues his look at the first humans with a hands-on demonstration of tool making.

Josh Gates and the Expedition X team review ghostly evidence and never-before-aired footage from the jungles of Brazil. Then, Josh and his crew delve into theories of what causes so many mysterious occurrences in the Bermuda Triangle.

Josh searches for adventure both high and low beginning with a hunt for the utopian paradise Shangri-La in the Himalaya Mountains’ ancient sky caves