The temperature drops below -50 Celsius, leaving the crews exposed to the elements. Trevor and Matt are stranded as their Bombardier breaks down; Chris' crew embark on a rescue mission.

The Gold Devils battle on after losing a team member, the Ferals' nugget trail goes cold, and Jacqui and Andrew face a night-time detecting mission for lost gold.

The Gold Devils gamble on a potential motherlode, Alan and Salty go offroad in the extreme wilderness of the Kimberley, and Shane and Kate try to get two wet plants going but run out of water.

Parks Towing remove a truck that has crashed into an embankment, North Coast Towing are clearing a burnt-out trailer, and Clayton's Towing team up with another company to haul a 40-tonne mobile home.

The Gold Devils gamble on a potential motherlode, Alan and Salty go offroad in the extreme wilderness of the Kimberley, and Shane and Kate try to get two wet plants going but run out of water.

Six weeks into the mackerel season, the Wildcard crew faces incredible highs and lows; a record haul brings triumph, but injuries, tensions, sharks and a sinking rowboat could threaten it all.

In the Netherlands, engineers race to build Hawaikinui 2 - a next-generation cargo ship designed to supply some of the most remote islands in the South Pacific.

The first official weighing for Gordon and Sebastian provides a ruthless review of their work so far. The pressure on James grows. He wants certainty about his expensive blast at 'Three Peaks'.

A disastrous fire cripples the Goldtimers' season, Marcus and Linden gamble on a new lease and expensive machinery, and the Ferals are forced to launch a rescue mission when Rob goes missing.

Jacqui and Andrew are stranded in the Palmer River region, Shane and Russell could finally hit a rich patch of nuggets, and the Poseidon Crew face a critical meeting.

The team update a 1977 Daimler Sovereign Coupe. They give it a modern makeover with upgrades to the suspension, ride-height, and colour. But a disaster in the paint booth puts the project in peril.

Ken calls a lifeline, Cam hits an impenetrable ice wall, and Big Al's bulldozer suffers a catastrophic breakdown.

Machine breakdowns threaten to cripple the Gold Timers' season, and the Ferals r-join the hunt and face a medical emergency as Linden finally breaks his gold drought.

The final week of the season: the Dust Devils' disastrous season goes from bad to worse, Shane and Russell battle the heat, and the Poseidon Crew unearth a nugget that catapults them to target.

Historic sea ice brings the harbours to a standstill as the heroes fight to keep the island running while making sure that everyone is safe.

After a hundred years of constant digging, fresh ground is rare in the Gemfields; Rowan Richardson drags an old drilling rig out to test a new claim, but he digs up a lot more than he bargained for!

Nika and Chris struggle to reach their goal. Karl goes after virgin ground to make his mine profitable. Ken and Guillaume get a huge surprise.

The Mackies receive a six-figure offer for their gold lease, the Wanderers are forced to swallow their pride to keep their operation afloat, and bushfires force Jacqui and Andrew to new ground.

The Desert Diggers venture underground in search of gold, Shane Calegari goes high-tech, and Sheryl and Simon scavenge for parts to fix their failing dry blower.

In the Netherlands, engineers race to build Hawaikinui 2 - a next-generation cargo ship designed to supply some of the most remote islands in the South Pacific.

The first official weighing for Gordon and Sebastian provides a ruthless review of their work so far. The pressure on James grows. He wants certainty about his expensive blast at 'Three Peaks'.

Uncover the exploits of Jeffrey Manchester, who escaped prison and went underground, and explore the intricate Dresden Green Vault burglary where advanced security was overcome by a clever gang.

While Dale struggles to run the family farm and his business, Gripp gets a call from his sister after a terrifying crash and races to help.

Old Timers Ray and Paul return to where they removed a massive boulder to see if it's hiding gems, and Anthony and Jodie are back at the Gemfields with renewed vigour and their families.