A recurring marker points to a lost Spanish gold mine directly on Slumach's path to the gold.

New rookie Sehaj battles a back injury, abuse, and a time-critical delivery; meanwhile, 22-year-old Roy has the weight of the world on his shoulders carrying 48 tonnes of steel plates.

The Ferals are on the gold when a four-wheeler crash leaves them a man down, and the Poseidon Crew battle to overcome a catastrophic mechanical failure.

The Gold Devils pin their hopes on an exploration mission to a rugged outback lease, and flood waters wreck the Gold Retrievers' new plant.

Gale-force winds tear across the outback, causing pandemonium for bull catchers; when hats and helicopters are tossed around by 40-knot winds, Kurt must weigh his goals against the safety of his team.

Irv finds the holy grail of VW: the Beetle. It's just miles from his garage, so he makes it his mission to breathe new life into this 75-year-old cable-break classic.

Driven by a severe crew shortage, the fleet relies on unproven greenhorns to salvage the season. Adam's teenage nephew faces the Gulf's hidden dangers in the dark.

Snow, ice, and a deadly mountain road push Dale to the edge as he fights to stay in control and keep his business moving forward.

Donnie finds out that his old business partner is using his trademarked mining logo for his new tourism venture; at the 1870 mine site, Richie is worried that mining manager Dan has lost his mojo.

The Gold Timers call in Rob's grandfather and unearth their biggest haul ever, Shane and Russell push their sluice to breaking point, and Marcus and Dale finally unearth a monster nugget.

Shane and Russell double down with two gold plants, the Gold Timers scale up with an eight-tonne loader, and Brent hires his 14-year-old son to drive the Poseidon Crew's 40-tonne articulated truck.

The season is halfway through as Ken and Guillaume try to reverse their bad luck by moving, Bernie has to deal with mistakes made by his junior crew, and Karl's night crew starts to slow him down.

Irv is a world-renowned expert in VW Sambas, so when an American collector turns to him with a bunch of rusted panels, and the dream of a showroom quality vehicle, there's only one man for the job.

A large haul has the Dirt Dogs believing they can hit a million-dollar target this year; the Gold Gypsies hope a new lease will answer their prayers; the Scrappers have built a gold processing plant.

The Dirt Dogs' 'Heap Leach' plant is in trouble; the Scrappers finally make it onto the goldfields with their new machine; daughter Tyler joins husband and wife prospecting team Ted and Lecky Mahoney.

The Integrated single stem logging team tackles steep ground and climbs some of the tallest trees in the British Columbian wilderness, and Duz Cho Logging is rocked by an unexpected snowstorm.

The crew of the Sebastian Sails face incredibly rough waves in their pursuit of shrimp but manage to hold their own until Skipper Morris faces the ultimate disaster: man overboard.

PJ and Andy scramble to produce big gold after their main investor gives them an ultimatum.

Justin and Chloe fly choppers to detect gold in the outback in Western Australia, and new team The Brumbies forms when Kat loses her office job and joins her prospecting partner Brett.

The Poseidon Crew are plagued with accidents and their aftermath in Victoria, and new team the Heli Hunters come face-to-face with the dangers of flying choppers.

Desperate to land a peak-price tuna, Adam hooks a leaping shark and an undersized fish instead. Meanwhile, Steven considers a multi-million-dollar licence that could change his future.

Dale comes face-to-face with some hard medical truths, and a diabetic crisis in the backcountry leads to a life-or-death recovery for Luke.

After leaving the SEALs in 2017, Ephraim Mattos joined the Free Burma Rangers in Mosul and risked his life to provide aid, rescue civilians, and document ISIS atrocities; he was shot during a rescue.

Members of SEAL Team Six make preparations for a top-secret mission to take out Osama bin Laden; their helicopters descend upon bin Laden's compound, but one of them crashes.

The Poseidon Crew dig for gold in century-old mine shafts, the Gold Gypsies struggle with an excavator breakdown, and the Goldtimers take a gamble on a new lease.

The Victoria Diggers struggle to hit targets, Shane and Russell's operation suffers storm damage, and the Dust Devils' operation grinds to a halt when their loader suffers hydraulic trouble.