A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide.

Rick checks out an ancient coin, while Chum unrolls an autographed Reservoir Dogs movie poster.

The guys check out an original work by Pablo Picasso, and a customer comes in with a saddle used by John Wayne in the movie True Grit.

Competitors march into a dry moat where they resurrect old swords and forge them into a Viking Seax.

Ancient emperors, kings and pharaohs were often attributed with otherworldly strengths, abilities and wisdom, and many were even considered gods.

Corey must decide if an original Casablanca movie poster is worth the six figures it will take to secure a deal.

Rick drives to Los Angeles to see legendary baseball player Babe Ruth's 'called shot' bat.

Four bladesmiths are pushed to their limits when they must forge a signature blade from steel springs, before recreating the mighty horseman's axe.

Accounts from various cultures describe similar divine, birdlike figures that brought advanced medical knowledge to mankind thousands of years ago.

The guys check out an ancient Roman Ides of March coin, an original Mad Max movie poster and an MGM lion brass knocker.

The guys check out a bust of actor Marlon Brando, a Donkey Kong penny bank from the early 1980s and a cyclops print made by a member of the band Devo.

After forging functional friction holders, two finalists go on to craft a Japanese trident called the Jumonji Yari, a weapon of unparalleled strength.

Treasure hunters Rick and Marty Lagina are being sought by treasure seekers around the world. They're teaming up with fellow Michigan man Kevin Dykstra to track a smuggled national treasure that dates back to the Civil War.

Chris Tarrant examines the important role played by the railways during the 20th century's two global conflicts. While keeping vital supply lines open, they also evacuated children and provided underground air raid shelters.

Engineer Rob Bell learns how the Tyne Bridge provided work for shipbuilders during the 1920s recession, and how it may have been the inspiration for the Sydney Harbour Bridge.

A guitar signed by Bruce Springsteen's bandmate Garry Tallent rocks up in the shop. Plus, Rick checks out a 1964 Peace Dollar.

The ladies from Vegas meet Dave, who promptly takes their locker away, leaving them only scraps. Kenny uses Mary as a Dave shield and the two find their way to a decent unit of their own.

In Placentia, the Ladies from Vegas try out their own bidding style. Brandi and Jarrod try to phone it in, while Kenny and his brother show everyone that family comes second.

Suggs and Stephen are back on the hunt for more relics from World War 2, and hope searching the site of a bomb factory won't yield anything too explosive.

Suggs and WW2 militaria expert Stephen Taylor bring forgotten stories of World War II back to life by unearthing artefacts from sites across the UK.

Archaeologists have uncovered mysterious relics revered by ancient cultures for thousands of years. What is it about these objects that draws people to them?

Rick learns one must buy money to make money when some rare currency hits his counter, and Chumlee flips out when he sees an antique pinball machine.

The guys check out handwritten math by Albert Einstein, an antique headlamp tester, and a prop from the horror movie, Child's Play.

The bladesmiths must harvest steel from farming tools before crafting the decorated and deadly Schiavona sword.

This episode examines new interpretations of ancient texts, which indicate that Satan may have been an extraterrestrial being, rather than a force of evil.

A seller brings in some vintage Disneyland employee costumes, and Corey lights up when a rare 'Smoking Hamilton' currency printing error comes through the doors.

Rick and Chumlee inspect a valuable Japanese katana from the 1800s and some Playboy stock certificates.

The bladesmiths are forced to achieve one of six Damascus patterns for their first round blade, before two go on to forge the fearsome Rhomphaia sword.