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The buyers have travelled to Allentown in search of old money. Items up for grabs today include rare Civil War-era objects from Gettysburg.

Vintage advertising pits the buyers against each other in Knoxville, where Sally spends big to win a dinosaur. Meanwhile, Billy's attempt at sabotage backfires.

After securing a lucrative claim, Shawn Pomrenke has a plan to become the leading miner in Nome. And, Zeke Tenhoff works on an ambitious sailboat.

Shawn unleashes the Christine Rose to try and find a lucrative riverbed. Vernon's new crew go for a test dive, but the practice takes a dark turn.

To increase gold production, the Gold Devils attempt to run three machines at once. The Gold Retrievers set a one-week ultimatum to find 10 ounces of gold.

Forrest returns to his childhood home in Zimbabwe searching for the extinct Cape lion after numerous sightings of a similar size lion with a black mane.

For the first time, Junior has to call on the chase boat to help rescue them. Plus, Josh and Casey hit a massive wave that causes major trouble.

Trouble is brewing when Bill's backup block goes missing. Cornelia Marie skippers Josh and Casey navigate a tenuous partnership at the Russian line.

Experts investigate reports of a secret alien base deep inside Alaska's highest mountain. Video evidence suggests extra-terrestrial activity in Fairbanks.

Josh Gates starts his extra-terrestrial search with a visit to NASA and an alien-hunting expedition in Chile, where scientists make new discoveries.

Josh is on Easter Island, where ancient alien theorists believe aliens visited millennia ago. And, he goes meteorite hunting in Zimbabwe.

Marty faces his most daunting challenge ever in the rescue of a Tennessee homestead. He calls on past homesteaders and a home renovation team to help.

Isaac from the Opal Whisperers works an abandoned, dangerous mine. The Mooka Boys are confronted by an irate miner as they peg a claim too close to his mine.

The Bushmen's drill rig loses a vital pin, forcing 74-year-old Les to undertake repairs four meters in the air. The Digi Diggers flooded mine wall collapses.

As a continent-size storm pummels the fleet, John and Andy fight to save their anchor and the boat. Plus, an orca befriends the Northwestern.

A storm threatens John's record-breaking run as Keith helps triangulate the crab. Jack braves treacherous tidal currents and chaos strikes the Wizard.

Dr Jeff helps Lola who needs major surgery on her kidneys and Dr Amy meets Bobo who's badly wounded after a cat fight. Animal control brings in a neglected dog, Juicy.

School is in full swing and in just a few months the students will be doctors. Adding to the stress they must first pass their final rotations.

Marcus and Dale find a huge gold nugget. The Gold Timers uncover their biggest gold haul ever, while Shane and Russell overwork their sluice.

A survival-savvy yoga teacher and a knife maker tackle the brutal jungle of Colombia. Deadly spiders and tics test their nerve and resilience - will it break them.

A self-proclaimed 'king of the forest' and an endurance athlete endure the Alabama backwoods. Battling extreme hunger, they take gruesomely desperate measures.

The team head to Martinsville, VA, to salvage a house that was condemned after an electrical fire. They spot a granite counter with potential.

The guys go to Moneta, VA, to salvage a diner and drive-in that were destroyed by a fire. Their priorities include a kiosk booth and a mobile stage.

Dredge Full Of Dollars Part 1. Shawn has a bold plan to rebuild the Myrtle Irene. Zeke tests out his unique sailboat dredge, and Vernon exams his claim with an underwater drone.

Dredge Full Of Dollars Part 2. Shawn is given permission to rebuild the Myrtle Irene, but it's going to be more expensive than he thought. Veteran diver Bob battles strong currents.

The Gold Devils return to their Fair lady lease hoping to reach their target before the season ends. Meanwhile, the Ferals suffer a major setback.

Forrest travels to rural Columbia trekking into the lawless bush in search of a unique crocodilian species, the Rio Apaporis caiman.

The Wizard catches fire in a violent storm known as a bomb cyclone. Meanwhile, Josh and Casey face 30-foot seas and Wild Bill's crew grind for 72 hours straight.

Battling exhaustion, Wild Bill's crew face the full wrath of the bomb cyclone. A snapped tendon puts the Summer Bay at risk and Josh gambles on crab-rich grounds.

A cryptozoologist hunts for scientific proof of Bigfoot in the Alaskan wilderness. Experts investigate a vortex of energy linked to disappearances.

In Zimbabwe Josh interviews witnesses to one of the largest ever UFO sightings. Then, in England, he examines a case known as 'Europe's Roswell.

Josh's search for alien life ends in the USA, with a hot case in Arkansas. And, there's shocking new evidence in the Roswell crash.

The Raneys struggle to revive a Wyoming homestead with a tragic legacy. To bring water to the property, Marty must solve the mystery of an untapped well.

The Bushmen struggle to locate the source of water flooding their mine. The Misfits are forced to work Issy's mine Honey Hole as they wait for bulldozer repairs.

The Bushmen bring in a master opal cutter, hoping to transform rough stones into a $100,000 haul. Sofia and Isaac are threatened by a mine roof collapse.

An early closure forces captains to work together to get their catch safely to port. Sig crosses a line when he repositions a rookie captain's pots.

Takes a closer look at the feuds and short fuses that make up the best Deadliest Catch conflicts. On a crab boat, sometimes the only way to earn respect is to fight for it.

In Brooklyn, Dirty Water Don repairs outflow gates at a treatment plant. In Massachusetts, Rick tackles a grease trap at a meat cutting facility.

Mike cleans grime off an escalator. Then, he and a zookeeper venture into the Arizona desert at night to round up neurotoxic stinging scorpions.

The Poseidon Crew recruit a 14-year-old worker to help speed up their operation. Meanwhile, the Gold Timers are slowed down by a freak dust storm.

A biology student and an expert survival instructor team up on the swampy shore of Croatia, but their strong partnership is tested by a freak accident.

An Army vet and a newly married man grapple with gender norms as they hit the mountains of Croatia. They must bond closely as a vicious storm threatens to rip them apart.

The team salvage a 1900s farmhouse in the heart of the Shenandoah Valley. They find ornate ceiling medallions, a clawfoot tub and pine flooring.

The guys get a big opportunity in suburban DC on the former site of the Capital Centre. Plus, Tay builds a breakfast table from an old car engine.

Papa Got A Brand New Dredge 1. Shawn and his crew make impressive progress on the Myrtle Irene. Zeke has an exciting offer for Vernon, while Emily tries to recruit a talented diver.

Papa Got A Brand New Dredge 2. It's a critical moment for Shawn as the Myrtle Irene is put in the water. Steve continues his hunt for a job, and Kris embarks on a risky adventure.

The Poseidon Crew face intense pressure when a police incident pulls Ethan away. Plus, Alan and Salty brave uncharted waters in search of sunken treasure.

A man surprises his wife for their wedding anniversary. He secretly builds a holiday home with an L-shaped eco-shell to blend into the surroundings.

A treehouse builder constructs a cottage retreat in Washington. He creates a natural siding and a huge fishing net for lounging above the living space.

As Sig is troubled by an injury, Mandy takes the helm to face a disgruntled Northwestern crew. Plus, Josh and Casey suffer tragedy on the Cornelia Marie.

Experts examine whether an interdimensional portal in the Alaska Triangle led to the disappearance of an aeroplane carrying 44 military personnel in 1950.

Josh Gates heads into the Himalayas to obtain scientific evidence of the Yeti. This time his mission is personal and takes him into uncharted territory.

Josh ascends higher into the Himalayas to explore caves. Plus, he investigates the mystical ties the fabled beast has with the Nepalese people.

The Raneys meet their match on a homestead in Idaho, where millennial off-gridders are plagued with dead soil, grizzly bear visits and constant landslides.

Sweltering temperatures and a waterlogged mine threaten to unravel The Digi Diggers' season-long dream. The Cheals' starter motor fails on their wash plant.

The Bushmen put their lives on the line in the most dangerous mine they have ever worked. Plus, the Cheal's first dig of the season grinds to a halt.

Deep in Western Australia's Goldfields, three teams of hardcore gold prospectors risk their dreams and futures, in pursuit of the ultimate reward.

Mechanical disasters and a high-stakes gamble threaten to derail the gold season for Dirt Dogs, Vern and Leon and Gold Gypsies, Chris and Greg.

A couple converts a cargo van into their dream tiny house. They add unique space-saving features like a kitchen counter that will also be the office.

A barista and sous chef want to simplify their lives by moving into a 340-square-foot home. Their dream home has a chef's kitchen, bar and herb garden.

An engaged couple rushes to finish building their home before their wedding day. Their new tiny house has a yoga area, wooden bathtub and rustic features.

A couple from California builds the ultimate treehouse. The home has a freshwater pumping system and a hidden bookcase, plus other unique features.

Phil Torres and Jessica Chobot embark on a mission to find out what's happening on the Island of the Dolls - a dangerous place that locals have long avoided.

A marine biologist and a special forces veteran take on Canada with no clothes. The bitter cold, torrential rain and wandering bears make every night a struggle.

Self-taught survivalist, Angel, teams up with student Nicole, a black belt in Taekwondo, and the pair sets out to engage the drought-stricken lake beds of Nicaragua.

The team are back at the Capital Centre. They salvage from a Japanese restaurant, a bank and a spa, bringing back shoji screens and bullet-proof plexiglass.

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.

Shawn has showdown talks with his dad about the future of the inland mine. Plus, Vernon incentivises his divers with a luxury trip to Las Vegas.

Shawn has a breakthrough in his negotiations to buy the inland mine. Kris endures a hard day in Elim, while Zeke suffers a devastating back injury.

Jacqui and Andrew face a major setback and enlist the help of a rookie miner to reach their season target. Alan and Salty gamble on a front-end loader.

A couple builds a home using shipping containers on a wooded lot in Oklahoma. They hope their building materials help them finish the job quickly.

A pro builder crafts an off-grid modular home high on a cliff off the coast of Vancouver, Canada. The smallest mistake could see it tumbling into the ocean.

Jake scrambles to repair a slack tank before it kills his crab or capsizes the Saga. Plus, Josh and Casey's rudder fails in heavy traffic.

A cryptozoologist investigates reports of a sea monster in Alaska. He reviews eyewitness accounts and examines never-before-seen video evidence.

Josh's quest takes him from the frozen slopes of Mount Everest to the isolated forests of Bhutan. He uses bait to try and force an encounter with the beast.

In the finale, Josh rafts into the remotest corners of Bhutan to capture some of his best evidence yet of the reclusive Yeti.

O.S. The Raneys answer an urgent call from central Alaska, where they find a family with all the infrastructure but minimal skills to realize their dream.

Between A Rod And A Hard Place. A rookie miner gets trapped down a mine shaft. A dust storm forces the Blacklights to reluctantly return to the failed Land of Promise money pit.

After ratter thieves raid their mine, the Misfits, Angel and rookie miner, Cody, struggle to find an opal king stone to fulfil an order for a buyer.

The Dirt Dogs are forced to uproot their entire operation. The Gold Gypsies face a major decision. Henri and Kelli strike salt-lake gold.

Torrential rain threatens to drown the Dirt Dog's season. Henri and Kellie hit a hot streak. The Gold Gypsies strike a once-in-a-lifetime find.

The team heads south to America's most haunted city: Savannah, Georgia. They investigate horrifying reports of violent paranormal activity.

New information reveals Jack the Ripper's identity. DNA suggests the existence of a Yeti. Max Headroom hijacks a live broadcast, shocking the world.