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With their million-dollar goal in sight, the Hoffmans' best working wash plant breaks down. Todd's last shot is to fire up the Hot Mess.

As Alaska's brutal winter bites, Todd works the night shift hoping to hit his million-dollar goal. Will the final gold weigh be a big win - or another disaster?

Wayde and Brett drop in on world famous magicians, Penn and Teller who want a tank built in honour of their 40th anniversary together.

Howie Mendel wants a tank but can't make up his mind on the design. Will Wayde and Brett be able to complete the build without any guidance?

Sig struggles with a crewman who thinks he knows more than the captain. Plus, Captain Wild Bill fights to save his boat from the rocky Norwegian coastline.

Captain Sig looks north to Russia to catch Norwegian reds. Meanwhile, a rekindled partnership between The Cornelia Marie and Time Bandit quickly turns sour.

Pete builds a treehouse for the children of injured Marines. Cargo netting provides an exciting way to enter, with more nets making a bridge between sections.

The dealers look for a train themed armchair to go in a holiday let in Cornwall. Plus, they are tasked with finding curios for a magic themed bar.

With day 60 extraction looming, a hunt goes awry and leads to an all-out search for wounded prey. The team's raft build could be a crushing waste of time.

With their million-dollar goal in sight, the Hoffmans' best working wash plant breaks down. Todd's last shot is to fire up the Hot Mess.

As Alaska's brutal winter bites, Todd works the night shift hoping to hit his million-dollar goal. Will the final gold weigh be a big win - or another disaster?

Heavy D's plan falls apart when he plans to turn a K5 Blazer into an off-road showpiece for a big client. Meanwhile, Sam builds a dangerous minibike.

The guys transform an old K5 Blazer and square body truck bed into a party on wheels. Plus, Diesel Dave convinces Heavy D to get his El Camino back on the road.

At a giant mid-Wales market, Drew has the pick of over 1000 stalls showcasing world-class pieces. He spies a 200-year-old Windsor chair in the best condition he's ever seen.

The baggage battlers head to a music icons auction in New York. They find a gold disc for the Pink Floyd album 'Dark Side Of The Moon' and a nude photo of Madonna.

The baggage battlers head to an auction in Denver, where they duel over a zebra rug. They also show an interest in some sealed lots, but will the contents be of value?

More everyday items are put under the microscope as we discover how custom running shoes, axes, racing karts and animatronics are made.

More everyday items are put under the microscope as we discover how headphones, diving regulators and reflector light bulbs are made.

Sig struggles with a crewman who thinks he knows more than the captain. Plus, Captain Wild Bill fights to save his boat from the rocky Norwegian coastline.

Captain Sig looks north to Russia to catch Norwegian reds. Meanwhile, a rekindled partnership between The Cornelia Marie and Time Bandit quickly turns sour.

The team try selling the Econoline to the notorious Danny Trejo, but can Thomas seal the deal? Plus, Tom takes on a legendary Latino wrestler.

Thomas and Tom take a hot lap with NASCAR legend Bill Elliot and bring home a '40 Ford Tudor to turn into a vintage Moonshine Runner!

Go behind the scenes with Pete Nelson as he shares some of his favourite, never-before-seen 'Treehouse Masters' moments, including lots of lost footage.

Pete tackles a build for a couple searching for treehouse treasure. With a rope bridge, and hidden compartments, this lair is fit for Blackbeard himself.

More everyday items are put under the microscope as we discover how custom running shoes, axes, racing karts and animatronics are made.

More everyday items are put under the microscope as we discover how headphones, diving regulators and reflector light bulbs are made.

Todd Hoffman brings a wash plant and all-star crew to his remote Alaskan claim to mine 1,000 ounces of gold. When they struggle, his son Hunter has a bold fix.

Todd gets Holy Roller running and catching nuggets. But unloading the mammoth wash plant leads to a mammoth fight between father and son.

The duo attempt to combine Gabriel Iglesias' love of vintage buses into a unique pair of tanks, but a grand theft heist at ATM may put on the brakes.

A call from NBA star Dwight Howard sends the duo to Houston. But Howard doesn't just want a fish tank, he also wants a new home for his snakes.

Josh's brother Shane gets caught in the bight as a typhoon slams the Cornelia Marie. Plus, Rip faces a crisis when a greenhorn collapses unconscious.

Johnathan searches for a pot of Golden Kings at the end of a rainbow. A medical mystery confounds Captain Rip and Keith partners with Josh and Casey.

The 256 takes a young racer who is losing big this racing season and tries to turn him into a big dog at one of Alabama's biggest grudge race events.

Farmtruck dreams up a vehicle propelled solely by air pressure, but getting AZN into the pilot's seat will take some convincing.

Twelve elite survivalists take on the sub-freezing Rocky Mountains of Montana. Severe dehydration puts a survivalist's challenge at risk.

Wes and Jermaine struggle after drinking tainted water. Teams fortify their shelters against the cold and medics must intervene after a fainting spell.