Four smiths have to create a knife from the most mangled mess of a vehicle ever seen on the forge floor. Only one smith can prevail. Season premiere.

When Rick and Marty finally get underground in the Garden Shaft for the first time this year, they may be foiled by an ancient booby trap.

Orange You Glad Dan Sold It Again?: The bidders head to auctions in Burbank, where a new buyer challenges both Barry and Jarrod, before making off with a jam-packed locker.

The Monster Hash: The buyers encounter new auctioneers in Costa Mesa. Brandi and Jarrod are eager for hot items to fill the new shop. But will it be Barry who scores big?

Jarrod and Brandi find some toys and Jarrod tries to battle a world champion. Meanwhile, the Harris Brothers look for a star on the Hollywood Walk of Fame and Barry gambles on a safe.

After returning to LA, Ton and Allen butt heads with a familiar old foe. They discover a driving range golf ball picker vehicle and one of the most accurate rifles ever made.

Ton and Allen face-off against a buyer with shady bidding tactics. The guys find a custom-built monowheel and a rifle designed to ward off grave robbers in the early 19th century.

One Man's Junk. A baseball thought to be autographed by 1959 World Series Champions the LA Dodgers shows up. Rick looks for a snappy deal on a rare 1930s movie camera.

Things get scary when a seller comes in with a letter from Stephen King, while Chum gets a sweet lesson as he checks out signed Steve Aoki merchandise.

Scientists and theologians are still trying to figure out if the Shroud of Turin truly is an image of Jesus - or something very different.

In 1698, Captain William Kidd seized a ship's treasure - but was hanged before he could reveal its whereabouts. What came of the Captain's lost booty?

Chum brings out his inner warrior when a Japanese samurai mask hits the counter and a Norman Rockwell autograph comes into the shop.

Allen and Ton use their bidding skills to win two units at an auction in Denver. The guys find a vintage ice-resurfacing machine and a biathlon rifle. How much are they worth? (Series 3,

Allen and Ton try to get the drop on their competition. They find some gold-mining machinery from the 1950s and an amateur rocket that can travel faster than the speed of sound.

The defending smith looks to retain his title in an epic kopis battle. The winner advances to a contest against a new challenger.

Chum brings out his inner warrior when a Japanese samurai mask hits the counter and a Norman Rockwell autograph comes into the shop.

Ton and Allen hit the road for Nashville, where they rumble with a band of tough, high-bidding bikers. The day explodes when the guys discover a 37mm anti-tank gun and a cowboy's rodeo saddle.

Big Sis drops some bad news as the guys clash with Carolyn at an auction in Long Beach. Ton and Allen unearth a Native American tomahawk, a dunk tank and a rare gun. (Series 4,

Ton and Allen get taken down by their fiercest opponent, CJ, but a twist of fate keeps the guys in the game. Their accountant has some shocking news.

Is there anything we can do to predict the future and protect ourselves from apocalypse? Will our civilisation end - or will we find a way to evolve and endure?

Barry's Angels: A surprise visitor helps to turn Barry's frown upside down. Plus, newcomers Rene and Casey purchase a statue that could be worth thousands.

The Harris Brothers go into stealth mode, Jarrod and Brandi find their sense of charity, Barry unearths a bag that has him hitting the slopes and Darrell discovers a big pole.

That's My Jerry!: The bidders do war in Compton where Herb buys a locker Mike doesn't want. Barry reunites with his old pal Kenny while Jarrod lands himself a new nickname.

With the competition hotting up, the champion faces a new challenger and a new weapon - the deadly sica. Who will emerge victorious?

Rick Dale helps the team restore an antique game from the 1900s. Then, Corey and Chumlee scope out a set of vintage stuffed animals.

When Rick and Marty finally get underground in the Garden Shaft for the first time this year, they may be foiled by an ancient booby trap.

Count down the top ten mysteries of the deep, from sunken continents to supposed proof of the lost city of Atlantis.

Scientists and theologians are still trying to figure out if the Shroud of Turin truly is an image of Jesus - or something very different.

In 1698, Captain William Kidd seized a ship's treasure - but was hanged before he could reveal its whereabouts. What came of the Captain's lost booty?

There have been thousands of alleged sightings of Bigfoot across the US, but despite growing evidence, the creature has never been officially identified.

On the brink of a major decision, Ton and Allen face-off with Carolyn at an auction in Covina. Also, The guys decide the fate of the shop.

With the pawn shop history, Ton and Allen start the next chapter of their careers with a bang. They uncover a Russian cosmonaut spacesuit... but is it real?

Ton and Allen go head-to-head with their former assistant, Carolyn, while Ton battles a bad back. The guys discover an automatic BB gun.

Corey checks out a 1972 telegram that rejects Muhammad Ali from fighting in Alaska. A first edition copy of Oscar Wilde's The Happy Prince arrives in store.

Rick and Corey dart out of the shop to check out a 1968 convertible. Meanwhile, Chum desperately wants a piece of an oreodont fossil.

When the team members experience a frustrating setback, they are stunned to learn that it may have led to a breakthrough discovery.

For centuries, explorers put their lives on the line searching for the legendary ancient city of El Dorado, but will anyone ever find it?

With the competition hotting up, the champion faces a new challenger and a new weapon - the deadly sica. Who will emerge victorious?

Four bladesmiths are kept in the dark when the shop experiences a blackout. With no power tools or lights, the smiths must rely on hand hammering and lanterns to forge their blades.

Scholars identify Egypt's obelisks as monuments to the pharaohs, while ancient astronaut theorists suggest they may power communication with the gods.

Discover unidentified objects witnessed by military pilots and a potential alien home in the darkness of space.

Ancient astronaut theorist Giorgio Tsoukalos takes a look back at some of the most mysterious yet incredible creatures ever investigated.

"Ancient Aliens" examines 75 million years of the most credible alien evidence here on Earth, from the age of the dinosaurs to ancient Egypt to the skies over the western desert in present day USA.

With the competition hotting up, the champion faces a new challenger and a new weapon - the deadly sica. Who will emerge victorious?

Four bladesmiths are kept in the dark when the shop experiences a blackout. With no power tools or lights, the smiths must rely on hand hammering and lanterns to forge their blades.