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It's back to the Forged in Fire Gladiator's Arena for two more ferocious one-on-one battles. Up for grabs is the greatest prize ever awarded in the Forge: $75,000.

The defending champion has taken down two opponents, including a two-time Gladiator of the Forge. Now it's time for a new challenger and a new weapon - the deadly Sica.

Our defending champion has four wins under his belt but will face his toughest challenge yet in forging the weapon used to assassinate Julius Caesar - the Pugio Dagger.

Viking combat ships changed the course of history. Their longships brought William the Conqueror's troops to Hastings, adventurers to North America and raiders to plunder the Saxon kingdoms.

Taking an in-depth look at the stories in history of fame, such as Rolls Royce, Marilyn Monroe, Muhammad Ali, the Crown, left-wing militant guerrillas like the Red Army Faction, and the Beatles.

After hearing incredible testimony about a UFO crashing on Skinwalker Ranch many years ago, the team makes a shocking discovery inside the rocky Mesa.

The team is thrilled yet concerned when the investigation of the Golden Egg, an area that scientific evidence suggest the legendary riches are hidden.

A blade rumoured to belong to a Japanese World War II admiral commands Rick's attention. Can he cut a deal, or will the negotiations be pointless?

Lauro begins the 1,000-mile Iditarod with his sixteen-dog team, pitted against harsh conditions and rugged terrain in one of the toughest races on earth.

Ashley and Anna try to knock Troy off his throne in his backyard. Daniel's plan falls to pieces. Leron and Porkchop call in reinforcements. Troy and Pickle risk their lives to hunt in Deadwood.

A secret bunker below the Kremlin, a sanctuary in the coastal forests of Sochi and a hidden second Metro in Russia's capital are just some of the bunkers developed for Stalin.

The men who have served as President of the United States are celebrated as esteemed leaders. But there are many bizarre tales involving them.

Most of the world's holiest places sit in plain sight. But there are some hidden deep underground. Why were they concealed? And what mysteries have we unearthed in these subterranean sacred spaces?

Mary, the mother of Jesus, is torn between protecting her son and letting him go to fulfil his destiny when the time is right, until Jesus is thirty, only she and Joseph know his mission.

Caiaphas, High Priest of Jerusalem and religious leader of the Jewish people, faces an impossible dilemma. Caiaphas must judge how great a provocation Jesus poses.

This time, Darrell might be at risk of losing the title of 'The King of Montebello'. Brandi and Jarrod find their way back to the auction.

The parking lot is tiny in Van Nuys, and Mary needs a little help managing it. Ivy is on the prowl for a bike - ANY bike.

This time in Victorville, Ivy lets Ivy Jr. run the operation. Kenny feels run down and lacks focus. Mary, Shana and Edwina just can't seem to make anything stick.

Throughout the world ancient rites and rituals are believed to connect humans to another dimension. But just who - or what - are we communicating with?

Did the tools and technology of ancient builders come from distant galaxies? If the ancient builders used advanced technology, could it prove that aliens visited Earth thousands of years ago?

Scientists are continually challenged by unidentified strains of bacteria with mysterious origins. Is it possible that ancient aliens as small as microbes have shaped human history?

Mysterious legends and crumbling ruins are all that is left of Earth's lost worlds. But could there be proof of alien visitors hidden among the artefacts of civilisations that have long vanished?

Throughout history, advances in technology have led to the development of powerful weapons. Were these weapons the product of human innovation, or were they created with help from otherworldly source?

The Vegas Ladies show up in 'Bourgie Brea,' and find the place fascinating. Mary decides to deal with her storage stress by introducing a bit of yoga into her routine.

It's a long way to Murietta, and Dave is counting on his competition being unwilling to buy a big locker they need to move.

In Huntington Beach, Darrell's insider information amplifies his investment considerably. Mary's find cooks up some oversized accoutrements.

It's a momentous occasion in Van Nuys for Darrell. Ivy starts his day with an unwelcome bang. Brandi & Jarrod wonder whether their unit will bring clear skies or clouds.

It's a long way to Murietta, and Dave is counting on his competition being unwilling to buy a big locker they need to move.

The buyers head to Torrance, where Dave sees his profits grow - amongst other things. Mary finds clothes that don't fit her, which turns out to be a good thing.

Overwhelmed by the sheer number of units up for auction in Rialto, Mary and Ivy wager that each can better predict final locker prices than the other.

It's nine stories of treasures in Koreatown and the Vegas Ladies discover that one of them has Texas flair. Kenny lucks out looking for lady stuff.

Lauro begins the 1,000-mile Iditarod with his sixteen-dog team, pitted against harsh conditions and rugged terrain in one of the toughest races on earth.

Taking an in-depth look at the stories in history of fame, such as Rolls Royce, Marilyn Monroe, Muhammad Ali, the Crown, left-wing militant guerrillas like the Red Army Faction, and the Beatles.

When Chum gets his hands on an unique chair, will Rick turn a blind eye to his spending? Rick cracks open a cookbook by Salvador Dali, and gets a surreal idea.

A seller walks in with an unopened McDonald's cookie from the 1980s. Will Corey take a bite out of this deal, or will the negotiation go stale?

Rick and Chum get fired up when they head to the desert with the shop's newest firearm.

A Bruno Mars platinum album spins into the shop. Can Corey land a funky deal, or will he get locked out of negotiations? Rick calls Dennis Quaid to help authenticate a signed poster.

Biblical prophecies are said to be messages and warnings sent from God, but what do they really foretell? Can they be decoded and used to predict mankind's future?

Could the Bible contain contradictions or hidden meanings that challenge our beliefs about what is right and wrong when it comes to human sexuality?

Throughout the world ancient rites and rituals are believed to connect humans to another dimension. But just who - or what - are we communicating with?

Did the tools and technology of ancient builders come from distant galaxies? If the ancient builders used advanced technology, could it prove that aliens visited Earth thousands of years ago?

Scientists are continually challenged by unidentified strains of bacteria with mysterious origins. Is it possible that ancient aliens as small as microbes have shaped human history?

Mysterious legends and crumbling ruins are all that is left of Earth's lost worlds. But could there be proof of alien visitors hidden among the artefacts of civilisations that have long vanished?

Throughout history, advances in technology have led to the development of powerful weapons. Were these weapons the product of human innovation, or were they created with help from otherworldly source?

A secret bunker below the Kremlin, a sanctuary in the coastal forests of Sochi and a hidden second Metro in Russia's capital are just some of the bunkers developed for Stalin.

At the Isle of Lewis in the Outer Hebrides, we visit the 5,000-year-old standing stones of Callanish, look at traditional Scottish blackhouses and highland cattle, and cut peat with a modern crofter.

At Rathlin Island, the third episode of the series visits a neolithic stone tool factory, a unique 'upside-down' lighthouse, and a WW2 shipwreck.

During World War Two, the Nazis stole vast amounts of art, gold, silver and currency, stashing it across Europe. Where did the Nazis take their stolen loot? And can it ever be found?

Our defending champion has four wins under his belt but will face his toughest challenge yet in forging the weapon used to assassinate Julius Caesar - the Pugio Dagger.

it's back to the Colosseum for the last two one-on-one battles. The reigning champion must now face a returning challenger and forge the intricate Acinaces sword.

Chum goes for a hole-in-one when a signed Jack Nicklaus golf glove swings into the shop. Meanwhile, Corey targets a G.I. Joe Tomahawk helicopter toy.

Emily brings her mother along with her to Walnut, and Darrell wastes no time finding an advantage.

30+mph winds batter Desert Hot Springs, and the buyers do their best to keep standing. Rene and Gunther dust off an old locker.

Back in the city of Orange, the Vegas Ladies arrive in vintage style, though not everyone agrees. Casey finds the chutzpah to pick up a good unit.

On the Tibetan plateau, evidence reveals that ancient Denisovans thrived by hunting snow leopards, showcasing their remarkable adaptability. In Siberia, a 44,000-year-old wolf may hold secrets about Ice Age bacteria.

Rob and Adam test the pain dished out by a trio of unlikely creatures commonly kept in a home aquarium - and they proceed to ruin the image of a popular cartoon movie character.

The final part of Britain's Secret Islands starts in the Isles of Scilly, strewn with shipwrecks, ancient ruins and dramatic fortifications.

Between 1940 and 1945, an MI5 agent going by the name of Jack King infiltrated Fascist networks in Great Britain by posing as an undercover Gestapo officer.

it's back to the Colosseum for the last two one-on-one battles. The reigning champion must now face a returning challenger and forge the intricate Acinaces sword.

Chum goes for a hole-in-one when a signed Jack Nicklaus golf glove swings into the shop. Meanwhile, Corey targets a G.I. Joe Tomahawk helicopter toy.