Falling boulders threaten the crew and the dig site. Their dangerous solution could trigger a massive landslide. Deep underground, Shawn and Jeremy recover their first piece of Jesuit gold, a mysterious artifact that could lead to the final location.

The team searches the massive tunnel, but with the valley on the verge of flooding, they're forced to put their lives at risk. Their risk pays off big, placing them on the threshold of solving the 300-year old Sacambaya mystery.

Smashing into a secret underground tunnel system, the team scours the subterranean cavern searching for the $2 billion treasure.

Chasing the treasure on two fronts, the team members find evidence of a route used to transport the fortune and a Jesuit artifact that could provide critical information regarding the treasure's final resting place.

The team uncovers proof of treasure in the jungle near a historic mission, and a spooky visit to an antique black market yields a tantalizing taste of Jesuit silver, leading them up one of the most dangerous rivers and deeper into the cursed history.

An elite team of treasure hunters search for clues to a vast fortune they believe is hidden on Brazil's deadly "Snake Island." But team tensions, mechanical problems and the threat of modern-day pirates could derail the expedition as it begins

The team finds even more artifacts that lead them closer to treasure. They meet with a local historian who gives them an invaluable clue, but also a warning about the treasure’s dark and cursed past, forcing them to reconsider their strategy.

The treasure hunters make a historic discovery in a cave system, but not one they expected, and a run-in with a jaguar leads to another revelation, but the new trajectory has tragic consequences for Captain Keith.