Season 4
Episodes
1. Going for Broke
Rick and Marty Lagina return to Oak Island and begin preparing a major evacuation of the Money Pit
2. Always Forward
Rick and Marty Lagina investigate a mysterious “Hatch” which may be a secret entrance to an underground treasure tunnel on Oak Island.
3. Swamp Things
The Lagina brothers find evidence of what could be an ancient shipwreck in the Oak Island swamp.
4. No Stone Unturned
Rick and Marty Lagina begin to start their search for a centuries old treasure vault in the Oak Island Money Pit.
5. Bullseye
Rick and Marty Lagina believe they have finally located an ancient treasure vault in the Oak Island Money Pit.
6. Circles in Wood
The Lagina brothers decide to move their Money Pit operation in hopes of finding a strange golden object.
7. All That Glitters
Rick and Marty Lagina begin a second massive dig in the Money Pit and find possible proof that a shipwreck is located in the swamp.
8. The Mystery of Samuel Ball
The Lagina brothers find important evidence linking an 18th century American slave to the Oak Island mystery.
9. Echoes from the Deep
Rick and Marty Lagina send divers deep into the Money Pit in search of a mysterious golden object.
10. About Face
The Oak Island team returns to borehole 10-X in search of new clues.
11. Presidential Secrets
Rick Lagina travels to the Franklin D. Roosevelt library to find out why the U.S. president was obsessed with Oak Island.
12. Hyde Park and Go Seek
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.
13. One of Seven
The Lagina brothers and their partners make incredible discoveries at Smith's Cove and in the Money Pit.
14. Of Sticks and Stones
Rick and Marty Lagina face a major dilemma as they continue their search for the original Oak Island Money Pit.
15. Blood Is Thicker
The Laginas and their team make what could be the most important discovery in the history of Oak Island.
16. A Look Ahead
Rick, Marty and the Oak Island team meet up with Matty Blake to reveal new discoveries and discuss future plans.