Jacqui and Andrew blaze a trail into a corner of Fish Creek but a washout threatens to stop their 40-tonne bulldozer in its tracks, and the Gold Devils roll the dice on a costly move to new ground.

The Heli Hunters are forced to make an emergency landing in remote country in Western Australia, and Nev leads the Poseidon Crew to a secret patch in big nugget country in Victoria.

The heaviest rainfall in 70 years sparks flooding in NSW; in Queensland, diver Mackie puts his life on the line in the murky Mary River so that Clayton's Towing can undertake a land-to-water tow.

The Poseidon Crew hope to pull in enough gold in the season's final week to keep the team together, the Gold Devils push their equipment to failure, and the Ferals battle through blistering heat.

As the wet season looms, the bull catchers race to make money; unflappable Kurt finally meets an obstacle he can't sidestep when his buyer falls through, and Clarry is nearly ready for retirement.

The Wildcard crew battles sharks, a giant crocodile, a chronic injury, arguments and persistent fog that all threaten to derail reaching their season target.

A deadly explosion strikes at the heart of the small Texas town of West; experts use the latest science to investigate and uncover a nearby fertiliser plant containing volatile chemicals.

The countdown has ended. Gordon and his team want to process the last trailer of gold-bearing material before storms stop all work. James will soon find out if his work at 'Three Peaks' has paid off.

The Ferals are on the brink of collapse, Shane and Russell could hit the richest gold patch of their season, and Jacqui and Andrew battle back-breaking ground that could ruin their latest deal.

The Poseidon Crew are running out of time to find a 1000-ounce nugget, the Gold Retrievers attempt to escape dangerous summer heat, and the Goldtimers confront the extremes and uncover a massive haul.

Norman has dreamt of owning a Volvo 850R since watching Volvo British touring cars race, but fixers Sheldon and Peter could struggle to bring Norman's dream to life.

Frozen ground threatens Cam's season. Ken and Guillaume shut down their prospecting mission. Karl weighs in his mid-season gold.

Permit delays devastate the Poseidon Crew's hope of a massive payday, a torrential downpour forces Shane and Russell to evacuate their dig site, and the Ferals finally uncover a rich patch of gold.

As Jacqui and Andrew are targeted by potential gold thieves, Marcus, Linden and Dale hunt in ground close to the site of the biggest nugget ever found in Western Australia.

The crew's luck runs out after an amazing haul as Bruce boldly decides to steer to Cape Carnage; just as the move starts to pay off, devastating news bring their success to a halt.

Jeff recreates an historic flight in search of vital clues before an archive discovery drops a bombshell.

Ken and Guillaume race to get sluicing before Ken leaves for the birth of his son.

The Poseidon Crew and Neville Perry's sons make their long-awaited return to German Gully, the Desert Diggers wade through mud for a payday, and Sheryl and Simon battle breakdowns to hit their target.

The Desert Diggers secure a season-changing deal, the Poseidon Crew expand operations at German Gully to find big gold, and intense summer heat pushes the Wanderers to the brink.

The Poseidon Crew call in a trusted ally as time runs out, the Mackies detonate explosives to obliterate impenetrable rock, and Jacqui and Andrew gamble everything.

The countdown has ended. Gordon and his team want to process the last trailer of gold-bearing material before storms stop all work. James will soon find out if his work at 'Three Peaks' has paid off.

With the help of aviation insiders, flight crew members and behavioural psychologists, we investigate stresses for airlines, airport staff, pilots, crews and passengers.

Andrew and Jeff discover a hidden cave in search of clues and an unexpected find that injects the team with fresh hope.

Six strangers from across the US set out on the mission of a lifetime to Greenland's brutal landscape; do they have what it takes to overcome obstacles before winter closes in and shuts them down?

Trevor is having a terrible season with too few fish; 76-year-old Richard injures himself; Mike and Justin's hopes of a good season have been crushed as they struggle to reach their quota.