Season 4 of The Curse of Oak Island
Season 4

Bigger Digging

15 Episodes • Nov 15 – Feb 28, 2017

Armed with a two-million-dollar budget, the team launches its most ambitious Money Pit excavation to date, sinking massive five-foot-wide steel caissons deep into the earth. The C-1 shaft punches into a 21-foot void at 171 feet, where divers encounter murky water and tantalizing metal detector hits. Meanwhile, the team visits the Franklin D. Roosevelt Presidential Library, uncovering documents that prove the future president was personally invested in the Oak Island mystery. Research into former landowner Samuel Ball, an enslaved man who became a wealthy citizen after settling on the island, raises questions about what he may have found. The season ends with four shafts drilled but the treasure still just out of reach.

Key Discoveries

Zena Halpern's 1347 map, treasure chest corner plate at 160 ft, Spanish galleon nail (1575-1600), McGinnis cross (1550-1700), metal sheets at 154 ft

Key People

Rick Lagina, Marty Lagina, Craig Tester, Alex Lagina, Dave Blankenship, Dan Blankenship, Charles Barkhouse, Doug Crowell, Laird Niven, Jack Begley, Dan Henskee, Peter Fornetti, John Chatterton (diver), Zena Halpern

All Episodes

15 episodes
1

Going for Broke

2.62M viewers

Rick and Marty Lagina return to Oak Island with a two-million-dollar budget and a mandate to excavate the Money Pit.

2

Always Forward

Jack Begley continues excavating the rectangular depression near Dave Blankenship's property on Lot 22, the site that aligns with the so-called hatch marked on ...

3

Swamp Things

Rick Lagina, Dave Blankenship, and Charles Barkhouse return from Fred Nolan's funeral, where roughly 100 people gathered to honour the veteran surveyor who firs...

4

No Stone Unturned

The first pieces of the massive drilling equipment arrive at Oak Island as preparations for the Money Pit excavation enter their final phase.

5

Bullseye

The first of several five-foot-wide, 30,000-pound steel caissons begins grinding into the earth above the Valley 3 target, the site where Rick Lagina and Craig ...

6

Circles in Wood

With the Valley 3 caisson sitting on what appears to be a wooden structure at roughly 143 feet, Rick and Marty Lagina must decide how to proceed without destroying whatever lies inside.

7

All That Glitters

With Valley 3 now confirmed as Mel Chappell's 1930s searcher tunnel rather than the Chappell Vault, the team shifts its full attention to Borehole C-1, located 20 feet northwest.

8

The Mystery of Samuel Ball

A high-resolution camera descends the C-1 shaft for the first time since the caisson broke through into the 21-foot void at 171 feet.

9

Echoes from the Deep

Geophysicist and sonar expert Brian Abbott returns to Oak Island to conduct a new scan of the chamber at the bottom of Borehole 10-X, the 235-foot shaft northeast of the Money Pit.

10

About Face

John Chatterton returns to the C-1 shaft for a third dive into the cavity at 170 feet, carrying an underwater metal detector to replicate the hits reported by Mike Huntley.

11

Presidential Secrets

The airlift operation at Borehole 10-X begins in earnest, with Irving Equipment pumping compressed air down a pipe to the bottom of the 235-foot shaft to force ...

12

Hyde Park & Seek

At the Franklin D. Roosevelt Presidential Library, Rick and Alex Lagina continue reviewing the archives with Paul Troutman and Doug Crowell.

13

One of Seven

Drilling begins on the T-1 shaft, the team's third and final Money Pit excavation for the season, at a location chosen by Craig Tester based on historical recor...

14

Of Sticks and Stones

At the T-1 shaft, the hammer grab continues bringing up material from depths beyond 100 feet.

15

Blood Is Thicker

The GAL-1 shaft, named after Rick and Marty's parents George and Ann Lagina, is the team's fourth and final exploration hole of the season.