Season 3

As Rick and Marty Lagina return to Oak Island, they discover that not only does borehole 10-X contain even more secrets than previously thought, but a new technology could prove that there are numerous treasure sites lying all over the island.

While Rick and Marty Lagina begin clearing dangerous obstructions from 10-X, Craig Tester and Jack Begley conduct a drilling operation to locate a possible golden treasure cache.

Rick and Marty Lagina bring heavy digging equipment to the island and their first target is where a researcher claims the treasures of the Knights Templar lie buried.

After locating the original money pit, Rick and Marty Lagina examine an ancient stone carving that may help prove that Portuguese explorers with connections to the Knights Templar are behind the Oak Island mystery.

While prepping for a diver to explore the bottom of 10-X, Rick and Marty Lagina arrange to send an ROV camera down the shaft, which reveals evidence that could threaten their entire operation.

As Rick and Marty Lagina and their partners try to piece together the clues carved in various stones on the island, they meet with a theorist who believes that the Aztec Empire was behind the 220 year Oak Island mystery.

Rick and Marty Lagina make an exciting discovery after forging a truce with Dan Blankenship's longtime rival, Fred Nola.

Rick and Marty Lagina along with their team make an incredible discovery in the waters surrounding Oak Island.

Rick and Marty Lagina meet a researcher who connects Christopher Columbus to the Oak Island mystery.

Rick, Marty and their partners obtain a mysterious sword that could connect the Roman Empire to the Oak Island treasure hunt.

After getting lab results concerning the mysterious Roman Sword, Rick, Marty and the team meet with a pair of treasure hunters who believe the Oak Island treasure lies north of the money pit.

Rick and Marty discover a mysterious 20-foot high void deep inside the Money Pit just before diver John Chatterton successfully reaches the bottom of borehole 10-X.

Brothers Rick and Marty Lagina finally get answers from the bottom of borehole 10-X just before making an incredible discovery deep inside the Money Pit.