Philippe and Ashlan Cousteau head to St. Thomas to learn more about Jean Hamlin, a sadistic pirate who may have left a vast fortune on the sea floor. Their investigation uncovers a secret society of divers who lead them to a shocking discovery. Written by Enzedder

Philippe and Ashlan visit Belize to explore the Great Blue Hole, a stunning wonder of the world. They then head to a private island to investigate a modern-day treasure map that could reveal hidden clues to the area's pirate past.

Our intrepid pair arrive in Antigua to track down new rumors about pirate Prince Rupert's missing treasure. They follow their investigation across the island into dangerous waters that reveal a clue that may change history.

We are in Texas where Ashlan and Philippe join with local experts in the hunt for clues about a missing treasure from 1554 on South Padre Island. Their mission takes them from dangerous waters to lethal quicksand in search of answers.

Philippe and Ashlan journey to the Caribbean to one of the world's deadliest reefs to complete a mission that Philippe's grandfather was unable to.

Ashlan and Philippe arrive in St. Croix to investigate the scenic island's rich pirate history and its link to the lost treasure of an infamous pirate known as The Buzzard.

Our pair head to the British Virgin Islands to investigate the story behind Robert Louis Stevenson's famous novel. Their dangerous mission uncovers clues on land and beneath the waves.

Philippe and Ashlan Cousteau uncover new leads in the search for pirate Calico Jack's missing treasure that could be worth millions.

Philippe and Ashlan Cousteau uncover new leads in the search for pirate Calico Jack's missing treasure that could be worth millions.

Philippe and Ashlan Cousteau uncover new leads in the search for pirate Calico Jack's missing treasure that could be worth millions.

The pair head to Roatan, Honduras, to investigate rumors of a lost chest of gold still missing on the island; moments of incredible beauty and harrowing danger.

Philippe and Ashlan are off to Florida this time. They head to Amelia Island to investigate one of the most famous stories of sunken treasures ever -- the lost 1715 Silver Fleet.

Ashlan and Philippe Cousteau go to South Florida to meet with a family who say they have a map to billions in lost gold. Their investigation ends with a mysterious finding in a swamp.

The pair head to Puerto Plata in the Dominican Republic to unravel a mysterious shipwreck that might have treasure on board.

Philippe and Ashlan go to Dominica, a remote island where a Spanish treasure convoy wrecked with millions in treasure. Their investigation reveals clues about whether the treasure was salvaged by local tribes or remains undiscovered.

Philippe Cousteau Jr, grandson of famous explorer Jacques Cousteau, and his wife, journalist Ashlan Gorse Cousteau, travel the Caribbean exploring pirate legends, investigating shipwrecks and the lore of lost treasure.