Rick and Marty use sonar to map out the bottom chamber of the 10X borehole.

Rick and Marty take a team of divers to Oak Island.

Rick and Marty search the swamp for an alternate entrance into the Money Pit.

While work begins in the swamp, Rick and Marty travel to Scotland to investigate an incredible theory about the construction of the Money Pit.

Rick searches for man-made flood tunnels; Marty and John visit Europe to track down a lead.

A visitor comes to the island suggesting that he has discovered a secret method of getting to the treasure.

Rick, Marty and the Oak Island team make a potentially historic discovery in the Money Pit.

After hearing that a treasure of biblical proportions was buried on Oak Island 2500 years ago, Rick and Marty Lagina look for evidence to prove it while also trying to locate the original Money Pit.

As Rick and Marty Lagina begin excavating the infamous Money Pit, a visitor shows them evidence that the treasures from King Solomon's Temple could be buried on Oak Island.

After dating the Spanish coin they found last summer to 1652, brothers Rick and Marty Lagina return to Oak Island and the strange triangle-shaped swamp to look for more clues to this 200-year-old mystery.