Season 1

Jeff MacKinnon searches the Death Coast for Le Chameau, an 18th-century shipwreck carrying a fortune in rare coins; with a 300-year-old map and top divers, he must recover the treasure before the relentless storms of the "Death Coast" shut him down.

After finding an American coin at Le Chameau's wreck site, Jeff MacKinnon must choose to either stay the course or chase a new mystery; sonar reveals a potential wreck, but a cryptic clue suggests an even greater discovery hidden beneath the waves.

Jeff MacKinnon's team searches Scatarie Island for The Feversham's lost fortune; battling currents, they uncover artifacts that may lead to treasure.

Jeff MacKinnon's team battles thick kelp, brutal currents and a looming storm while searching Scatarie Island's coast; just as the storm hits, they make a crucial discovery.

Jeff and his team's search for the wrecks of Mary, Joseph, and Neptune takes them further into uncharted territory. When an unusual artifact suggests a nefarious past for one of the ships, Jeff begins to suspect he may be on the verge of uncovering a field of stolen treasure.

Following the trail of a cache of precious gemstones, Jeff and the team move further beyond the breakers, in search of The Neptune; with stormy weather closing in, a puzzling find may lead them one step closer to a privateer's long-lost treasure.

A powerful hurricane forces Jeff's team into a secluded cove, where they investigate The Lombrac, an 18th-century ghost ship; as the divers recover clues from the depths, Jeff zeroes in on the site of a 300-year-old mystery that may be solved.

Jeff MacKinnon's team searches Scatarie Island for The Feversham's lost fortune; battling currents, they uncover artifacts that may lead to treasure.