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The Raneys help a struggling Idaho family in a cliffside geodesic dome home. Misty builds an innovative garden greenhouse, while Matt finds a dangerous predator.

The end of the mining season is near. The Rookies gamble their hopes on one last haul of opal and the Opal Queen makes a final desperate dig.

The Young Guns face an uncertain future when James gets injured. The Bushmen find opal on the boundary of their mine, and rain slows down the Cheals.

The treacherous waters surrounding St Paul Island make off-loading crab a terrifying necessity. And another greenhorn walks off the Seabrooke in a cloud of shame.

As Opilio season winds down, two skippers suffer debilitating injuries and the captain of the Wizard physically assaults an unlikely victim.

Alan and Salty venture deep into Western Australia's Pilbara region. The Gold Devils struggling to find a reliable source of gold on their Fairlady lease.

Jacqui and Andrew get trapped behind the line of a devastating bushfire. The Gold Devils are torn apart when a team member goes off on their own.

Scrappers boss Alex Stead gambles his remaining cash on bigger machinery, pushing his marriage to the edge. And, the Victoria Diggers unearth a rare artefact.

A Bigfoot believer who is afraid of the dark, and a tough mom who has never left home, take on the dark and mysterious Mayan jungles of Belize.

A mountain Mum, filled with a wealth of wilderness knowledge, attempts to survive with a partner who seems to prefer napping to trapping.

The crew accept an invitation to salvage a 100-year-old lodge in Jamestown, New York. They collect unique stair spindles and beautiful stained glass.

The crew return to Jamestown to hunt for items at a home that's been expanded to create a Moose Lodge. They uncover neon lights and ornate roofing tiles.

The Bering Sea becomes the Wild West as Shawn and Kris fight encroaching miners. Meanwhile, Emily expands her operation but an air malfunction threatens her season.

In the Bluff's lawless waters, Shawn and Kris use brute strength and verbal threats to stand their ground as competition forces captains to change tactics.

The Poseidon Crew finally start digging legendary ground in search of a multi-million-dollar nugget. Shane and Russell endure the snake-ridden wilderness in Pilbara.

Fisherman and adventurer, Jeremy Wade, travels to the island of Tasmania in search of a colossal freshwater beast on the verge of disappearing forever.

A catastrophic collapse of the Northwestern's crane leaves Sig and Mandy with no way to haul pots. On the Cornelia Marie, a deckhand narrowly escapes disaster.

Wild Bill enlists Jake's diver to attempt a risky underwater repair. Sig makes a desperate bid to save his gear from the descending ice pack.

A discovery on the island fires up the team. But as excitement builds, some dangerous encounters threaten to end the mission - and people's lives.

Josh journeys from Russia to Germany in search of history's most expensive stolen object, the Amber Chamber. He retraces the steps of Nazi soldiers.

Josh Gates hunts down new evidence on the disappearance of Amelia Earhart. He starts in Papua New Guinea, ending his journey in Fiji, hoping to find her remains.

The Raneys help a family with dreams of a horse rescue. Misty builds a multi-tier garden and duck pond, and Marty constructs a horse barn.

With a major setback in Misty's build, the Raneys race the clock in their rescue of a Texas homestead. Matt builds a hog trap for an additional food resource.

The Blacklighters spot one of the deadliest snakes in the world. The Young Guns take on a dangerous new mine, and the Opal Whisperers hunt for cathedral pattern opal.

Rory and Oscar are forced to operate their dad's drill rig for the first time. The Tarantos are struck down by sickness, and the Bushmen build a dangerous mine roof.

Mohawks & Madness, Goodness & Gladness. As the season with big pots and big paydays, the Seabrooke captain fights an illness and the Northwestern takes revenge on the Time Bandit.

The captains are left reeling when their crab quota is slashed. Should they continue fishing the depleted red grounds or risk everything to find elusive blue crabs.

As the Raneys scramble to ready their 40-acre homestead for winter, Marty gets an urgent SOS call from a fellow Alaskan.

The Dirt Dogs' huge dry blower shuts down due to extreme temperatures, while the Mahoneys and Gold Gypsies take a last-minute gamble that delivers big gold.

A hunter from Louisiana meets a California surfer girl on a deserted island of the Philippines. With very little water to tap into, dehydration soon sets in.

A book-smart but inexperienced survivalist and a rock-climbing wilderness enthusiast take on the savannah of Namibia - but the harsh conditions quickly take a toll.

In North Carolina, the crew search for items at a Mediterranean-style mansion. They salvage stone tubs and three-tier chandeliers.

The crew rescue items from a sporting goods shop in Largo, Maryland. Robert and Grayson face a challenge to salvage the property's electrical system.

A violent storm pits safety against ambition. Ken rushes to free the Myrtle before it's destroyed. Kris risks being stranded, and Emily tries to appease nature.

The Bering Sea battle intensifies as Shawn bets big on a new discovery. The Kellys are forced to find new ground and Emily nearly boils a diver alive.

A robbery at the Gold Retrievers' camp puts more pressure on Chris and Brad's partnership. Marcus and Linden finally hit a rich patch of nuggets.

Fisherman and adventurer, Jeremy Wade, travels to western Australia to discover what is wiping out many of the fish in Australia's Fitzroy River. What will he find.

Sig and Mandy rush to re-join the fray ahead of a fast-moving ice edge. On the Cornelia Marie Josh and Casey's race to save their pots comes at a heavy cost.

A wound side-lines Wild Bill's new rail man and injuries on the Time Bandit take out two crew. Josh and Casey apply frontier medicine to a bleeding deck boss.

As injuries pile up, the team push deeper into the Island in search of the Treasure of the Trinity, but a trail of clues leads to confrontation.

Josh treks the Inca Trail through the Andes and into the Peruvian Amazon in search of a mythical city of gold. His journey takes a detour to the ruins of Machu Picchu.

Josh dives into the Lajas Reef in search of the treasure of legendary pirate Henry Morgan. His journey takes him to a modern marvel, the Panama Canal.

The Raneys find a Montana homestead struggling through food, predator and power problems. Marty and Matt enlist a community of firefighters to help.

The Tunnel Rats risk their lives to get a massive digger under the ground. Meanwhile, the Blacklighters are amazed to unearth their largest piece of opal.

The Bushmen's new worker faces a dangerous first day on the job. The Tarantos' overworked excavator grinds to a halt, and the Cheals are hit with more breakdowns.

On the Blue grounds, a captain's bet has the boats jockeying for position, while on the Red grounds, a returning veteran proves his worth.

The Bering Sea exposes soft spots and weak links in each crew. While the skippers wonder which deckhands have the right stuff, the Time Bandit says goodbye to a crewmate.

The team journeys to Okinawa, Japan to investigate reports of possessions by the spirits of people who died in the bloody battles of World War II.

Josh travels to India in search of Dwarka, a mythical kingdom swallowed by the ocean. He dives into the Arabian Sea to visit a dig site that could rewrite history.