Brothers Rick and Marty Lagina now own most of the mysterious Oak Island. Determined to resurrect the 200-year-old search for treasure, they explore an abandoned shaft called 10-X.

When the team discovers something very unusual at Smith's Cove, Rick and Marty Lagina believe they've made a huge breakthrough in unlocking Oak Island's secrets.

As Rick and Marty Lagina begin work to drain a mysterious swamp, they are visited by a woman who lost her father and brother to an accident on Oak Island that gave rise to rumors of a deadly curse.

In this episode, a visitor to the island presents Rick and Marty Lagina with his incredible theory about where the treasure on Oak Island is actually located.

In this episode, Rick and Marty Lagina and their team make one of the biggest discoveries ever in the 200-year-old search for the treasure on Oak Island.