Le mystère d'Oak Island

Peril strikes during a daring dive as brothers Rick and Marty Lagina double down on their efforts to locate the original Money Pit.

In this pre-season special, Matty Blake treks to Oak Island to get new insight from the brothers Rick and Marty Lagina on the many highlights from the first four years.

Evidence of a possible pirate presence on Oak Island mounts when a treasure chest from the 1700s is revealed and the brothers get stunning news about a find from the Money Pit's GAL-1 shaft.

New evidence of a European presence on Oak Island more than a century before the discovery of the Money Pit excites the team, until alarming news threatens to shut down the entire operation.

Danger strikes just as the geo-tech drilling team hits a possible void in the Money Pit and the discovery of a long lost artifact leads to an emotional reunion.

The discovery of an old document offers new clues on the exact location of the Money Pit, and the fellowship of the dig makes a cryptic discovery at uncharted depths.

After years of searching and speculation, the Laginas and their team unearth evidence of what Marty believes proves the exact location of the ultimate target: the Money Pit.

the Lagina's and their team unearth evidence

The verdict is in for two new pieces of evidence found deep in the Money Pit. Both are ancient and each may be proof of theories that could rewrite the history of the Oak Island mystery.

New evidence confirms a European presence on Oak Island 100 years before the discovery of the Money Pit, while new research suggests a clear pathway from the Knights Templar to Oak Island.

A research expedition to a French castle and prison reveals new clues, including ancient carvings that strengthen a possible link between the Knights Templar and Oak Island.

A research expedition to a French castle and prison reveals new clues, including ancient carvings that strengthen a possible link between the Knights Templar and Oak Island.

The team unearths a ship's log detailing the burial of treasure on an island eerily similar to Oak Island, and Rick and Gary make what may prove to be the biggest find on Oak Island, ever.

Further investigation suggests a link between the mysterious medieval cross and the Knights Templar.

A skeleton key and maps from Fred Nolan's archives open a new door in the Laginas' quest, while new evidence suggests a Templar connection to the cross found in Smith's Cove.

The plot thickens around the discovery of the lead cross as a new theory points to possible ancient origins. Rick pulls an artifact from the swamp that may support one of Fred Nolan's theories.

The discovery of the mysterious lead cross raised new questions about a Knights Templar connection. We take a look at Templar history and the compelling Templar clues the team has found so far.

It's all hands on deck in the Money Pit as the team hits something in the DMT shaft that may prove to be the last thing standing between it and the answers below.

The fellowship battles the shifting tides of Smith's Cove and finds evidence that may support one of Dan Blankenship's early theories.

The Oak Island mystery has lured generations of treasure hunters. In this one-hour special, we revisit the families that have been a part of Oak Island's history for more than two centuries.

It's the season finale and the moment of truth for the fellowship of the dig