The Curse of Oak Island: Digging Deeper - Season 4

Rick and Marty Lagina return to Oak Island to prepare for a major excavation of the Money Pit; enhanced.

Rick and Marty Lagina investigate a mysterious "Hatch" which may be a secret entrance to an underground treasure tunnel on Oak Island.

The Lagina Brothers find evidence of what could be an ancient shipwreck in the Oak Island swamp.

Rick and Marty Lagina begin their search for a centuries-old treasure vault in the Oak Island Money Pit.

Rick and Marty Lagina believe they have finally located an ancient treasure vault in the Oak Island Money Pit.

Rick and Marty Lagina decide to move their Money Pit operation in hopes of finding a strange golden object; enhanced.

As Rick and Marty Lagina begin a second massive dig in the Money Pit, possible proof of a shipwreck is located in the swamp; enhanced.

Rick and Marty Lagina find important evidence linking an 18th-century American slave to the Oak Island mystery; enhanced.

Rick and Marty send divers into the Money Pit in search of a mysterious golden object; enhanced.

The Oak Island team returns to borehole 10-X in search of new clues; enhanced.

Rick Lagina visits the Franklin D. Roosevelt library to find out why the U.S. president was obsessed with Oak Island; enhanced.

Rick and Marty decide to dig a third hole at the Money Pit after Rick finds even more evidence connecting Oak Island to the Knights Templar; enhanced.

The Laginas and their partners make incredible discoveries at Smith's Cove and in the Money Pit; enhanced.

Rick and Marty Lagina face a major dilemma as they continue their search for the original Oak Island Money Pit; enhanced.

The Laginas and their team make what could be the most important discovery in the history of Oak Island; enhanced.