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At Detroit's abandoned Packard plant, Mike gets a tour of an American landmark before it disappears.

Hugh and the team attempt to uncover a Viking burial ground hidden beneath Masham in North Yorkshire.

The Troubling Tale of Bute Inlet Gold Pt. 2: The search for Slumach's gold continues as the team find themselves 300 kilometres away in search of answers to the mystery.

In the season finale, evidence that Dick Carter was hot on Slumach's trail emerges as map markings lead the team to Pitt Lake for one last attempt to strike gold.

Rick uncovers an 1800s first edition book about the Underground Railroad, as well as a set of baseball cards given to troops during Desert Shield.

A seller hops in with a special edition of Alice's Adventures in Wonderland, as a pair of Red October Nike Air Yeezy 2s kicks into the shop.

It's business as usual until a vintage Mercury Zephyr arrives and shakes things up. Also, Darrell stumbles over upon the ultimate sketch artist.

Ivy and Pops go head-to-head, and when Brandi's secret weapon lands her more than she bargained for, Kenny swoops in to brighten up her day.

Kenny's fear of sharks inspires a controversial wardrobe choice, Rene tries to intimidate the competition and Darrell has tunnel vision.

Barry works with a masked bidder and the pair develop a winning strategy. Meanwhile, Rene checks out a risqué room.

Dr Alice Roberts explores finds from the west of Britain, including the lost World War I training trenches on Salisbury Plain.

When the world throws you a bizarre problem, the solution can be even stranger.

Witness an unusual auction with two huge specialty items.

T-Money wins a mysterious bin with a massive, chained-up steel door.

The big tension of the day is between T-Money and Brandon. T goes for the mystery bins - the box and the barrels.

A trip to Lake Arrowhead brings rain, snow and a new couple who drive Brandori crazy.

The new couple, the "younger, trendier Brandon and Lori" are back.

Papa Bear is back and he's bigger than ever. He goes for a pair of mysterious blue shipping cases.

It's a big day for Brandon and Lori - they score an awesome sand rail and a vintage surfboard, which turns out to be highly collectible.

Papa Bear sees a clue in a bin that leads him to believe there's a shotgun hidden in it.

In the Pacific Northwest, the Wolfe Brothers get inside the salvage king's 200,000-square-foot warehouse filled with all kinds of treasures.

As the finals creep closer and the competition heats up, it's now the Marines' time to shine, as they step up to forge an iconic combat knife: the KA-BAR. (3 of.

Swamp chaos erupts as floodwaters vanish, forcing rival bulls into new battles and hunters into a brutal fight for survival.

From ancient war machines to weapons of mass destruction, these innovations reshaped warfare and produced some of history's deadliest creations.

When the world throws you a bizarre problem, the solution can be even stranger.

The Vikings were infamous for being bloodthirsty, seafaring warriors - but historians are learning surprising new things about this Norse society.