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

The team is trapped in an ancient, underground tunnel putting the search at risk. Using just the gear they have on site, the crew rigs a remote-controlled camera that finds the expedition's most significant treasure.

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.

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 uses explosives to get at the treasure and get their largest find yet. The discovery of a key landmark puts them at the threshold of the two-billion-dollar fortune.

The team needs to find a solution to toxic fumes. An aerial drone camera uncovers a location putting them closer to the two-billion-dollar fortune.

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.

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

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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.

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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.

A critical clue on Snake Island sends the team into the dangerous Paraguayan jungle, with more deadly predators than before. A historic artifact brings them closer to the treasure, but life-threatening encounters nearly end the expedition.

Misfortune chases the team when a deadly caiman sets its sights on Mehgan, but then a potentially crippling accident leads to an astounding find, a coded message from the past that could bring them one step close to the Incan Gold.

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.