At the New Agrarian School in Bigfork, Montana, three top smiths are tested like never before. After two gruelling challenges, only one will go through to the the finals.

Four bladesmiths must create a signature blade using a randomly chosen mystery technique, before two are chosen to forge the Japanese Naginata.

As the connection between Nolan's Cross and the Knights Templar deepens, the team digs up treasure on Lot Five.

Brandi makes a serious land grab and it pays off, Rene can't resist a big mystery and Barry poaches from the competition.

Ivy scores a packed locker and stumbles across an antique of unusual origin, while Darrell discovers that good things come in small packages.

Rene has lukewarm results bobbin' for profits in Stanton, while Brandi does end up with the green... just not in the way she expected.

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.

Prohibition Pawn: Chum checks out an antique corkscrew from the Prohibition era, while Rick checks out an 1834 book of the original rules of baseball.

On the orders of Adolf Hitler, the Nazi invaders of Alderney utilised more than 5,000 slave labourers to build a series of protective fortifications.

Could it be possible to cheat death and live forever? What if, by re-examining ancient teachings and harnessing modern technology, we could eventually become immortal?

A signed Jack Nicklaus golf glove swings into the shop, Corey targets a G.I. Joe Tomahawk helicopter toy and an antique Fender amp rocks Chum's world.

Allen is late to the auction, leaving Ton to battle a feisty female auction buyer on his own! The guys find a fully functional flamethrower and a rare hand-carved bow and arrow set from South America!

Ton and Allen head to an auction in Ton's hometown and end up battling with a big-mouthed buyer. They discover a pair of tranquilizer dart guns and also end up fighting with a K9!

At the New Agrarian School in Bigfork, Montana, three top smiths are tested like never before. After two gruelling challenges, only one will go through to the the finals.

A signed Jack Nicklaus golf glove swings into the shop, Corey targets a G.I. Joe Tomahawk helicopter toy and an antique Fender amp rocks Chum's world.

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.

The buyers head to Palm Springs in search of higher-end goods. Kenny tries to amp up the profit on a unit and Rene sees quick potential where others don't.

Dusty and Lupe steal a no-brainer locker, which pays off handsomely. Meanwhile, Darrell taxes himself - which almost puts him in storage jail.

Barry takes Dusty under his wing at a big Auction in Fullerton as Rene makes some dainty discoveries.

The women outnumber the men in Rosamond as Dusty and his girlfriend discover a stockpile of vintage TV memorabilia.

Modern-day pirates blindly bid on abandoned storage units that may contain junk or treasure.

Four bladesmiths get scrappy when they are given a thin sheet metal to forge a knife and later have to recreate a razor-sharp serrated Indian sabre.

Chum chases a lead on a 1963 Fiat Microcar. Meanwhile, Rick and Corey make a wager on a set of billiard balls and Rick examines the holy grail of coins.

As the connection between Nolan's Cross and the Knights Templar deepens, the team digs up treasure on Lot Five.

Giorgio Tsoukalos explores the mystery of the Nazca Lines found in the Peruvian desert. Hundreds of gigantic lines, some in the shape of animals, geometric patterns and even an alien-like being, extend for miles over a vast section of the arid plain.

Are volcanoes a secret hiding spot for aliens? Are underground alien bases nestled in valleys and mountains? And why do certain areas report a higher concentration of UFO sightings than others?

Have the US and Russia been working together from the beginning of the Space Race in preparation for the ultimate extraterrestrial encounter?

A last-minute auction in Norwalk proves challenging when Ton and Allen go toe-to-toe with a real life cowboy couple. They also uncover a 3D printer.

An auction in Whittier gets ugly when a buyer named Big Dave tries to take it all. After some tough losses, the guys win a state of the art food truck.

With their beloved bread truck on life support, Ton and Allen head to an auction to help save her.

Rick gets a visit from The Boss when a Bruce Springsteen tour jacket rocks into the store. Meanwhile, Corey checks out some motorcycle art.

When Rick gets a chance at an iconic collection of Hard Rock photographs, can he capture a deal or will another one bite the dust?

The team has finally reached target depth in the Garden Shaft, but their drilling efforts may be thwarted by a legendary flood tunnel.

The discovery of the ancient Karahan Tepe megalithic site, displaying perplexing engineering skills, turns the archaeology world on its head.

Could it be possible to cheat death and live forever? What if, by re-examining ancient teachings and harnessing modern technology, we could eventually become immortal?

After forging a bayonet blade and attaching it to a rifle, two bladesmiths will be called upon to create the legendary African blade, the Zulu Iklwa.

Meteor impacts have created the perfect environment for humankind. Could new evidence reveal that celestial objects have been sent by an alien intelligence?

The most compelling investigations contain shocking evidence, stunning documentation and crazy experiments.

The drilling operation in the mysterious Mesa on Skinwalker Ranch leads to a stunning and disturbing chain of events.

Investigate sasquatch footage, birds plunging to their death and a ghostly phantom.

Four bladesmiths get scrappy when they are given a thin sheet metal to forge a knife and later have to recreate a razor-sharp serrated Indian sabre.