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After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

Within a quiet valley lies a battlefield full of bones and weapons predating any previously discovered battleground. What experts unearth will rewrite our understanding of warfare. (1 of.

Was Leonardo Da Vinci, one of history's great thinkers also one of its greatest prophets? And did he envision world destruction.

New research and modern computer graphics shed light on our doomed future as forecast in centuries gone by. Can we avoid our fate by heeding these warnings.

A British expeditionary team attempt to circumnavigate the world in an 80-year-old vintage World War II fighter plane.

Meet the women who took Hitler under their wing, training him in the methods of high society and power - only to be left behind once he achieved it.

Four bladesmiths face double the trouble when they are tasked with forging two canister damascus knives. Who will rise to the challenge to be crowned champ.

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.

Four bladesmiths are tasked with forging a Saw Back machete and later create a deadly Malaysian backcountry tool and weapon: the infamous, Parang Nabur.

Rene declares himself the king of Orange, but Dusty isn't quite ready to concede the title. Meanwhile, Kenny accidentally reinvents the wheel.

Darrell must deal with Kimber's eyes on a competitor, Dusty unpacks what could be the ultimate assistant and Rene pulls off one of his greatest profits.

King Darrell strives to defend his throne, but Rene and Casey signal their intentions to undermine his plans. Meanwhile, Kenny gets bowled over by his locker.

Barry turns up to auction armed with a present for a certain hustler. Meanwhile, Brandi and Bozek get a firm grip on a smaller unit.

Lisa dons her cowboy gear and brings her money sock along, while Rene sinks his teeth into an unassuming unit and Brandi goes on a scavenger hunt.

Rene and Casey roll the dice on some sealed totes in San Bernardino, while Kenny stumbles over some odd-looking car parts and Lisa shields herself from disaster.

Rene declares himself the king of Orange, but Dusty isn't quite ready to concede the title. Meanwhile, Kenny accidentally reinvents the wheel.

Darrell must deal with Kimber's eyes on a competitor, Dusty unpacks what could be the ultimate assistant and Rene pulls off one of his greatest profits.

King Darrell strives to defend his throne, but Rene and Casey signal their intentions to undermine his plans. Meanwhile, Kenny gets bowled over by his locker.

Barry turns up to auction armed with a present for a certain hustler. Meanwhile, Brandi and Bozek get a firm grip on a smaller unit.

Lisa dons her cowboy gear and brings her money sock along, while Rene sinks his teeth into an unassuming unit and Brandi goes on a scavenger hunt.

Rene and Casey roll the dice on some sealed totes in San Bernardino, while Kenny stumbles over some odd-looking car parts and Lisa shields herself from disaster.

A seller comes in with a poster by Henri de Toulouse-Lautrec, Chum unboxes some 1912 Yale baseball uniforms and Rick looks at a ukulele from 1919.

Rick and Corey race to San Diego to take a spin in the classic car Hell's Chariot, from the movie Grease.

A customer walks in with a Tommy Boy poster signed by Chris Farley. Meanwhile, Rick tries not to slip up when making a deal on a pair of snowshoes.

A woman brings in a Japanese matchlock rifle that weighs almost as much as she does, followed by two classics: a Superman figure and a Tadeo Fender Telecaster.

The Scarab, The Ark and the Rock: The team investigates some of the most remarkable artefacts from Tutankhamun's tomb, including an exquisite piece of jewellery.

Romans, Lost Treasure and a Leech: Roman dodecahedrons and baffling copper scrolls discovered in Israel come under the microscope next. Plus, a bizarre discovery in Whitby.

The Battery, The Screaming Mummy and the Medieval Iron Hand: See one of the world's first batteries. Also, new details emerge about the death of Egypt's infamous Screaming Mummy.

The Ancient Computer, The Pigeon and the Roman Nanotechnology: A look at an ancient Greek device built to contain the knowledge of the cosmos and a colour-changing Roman cup.

German Codes, Egyptian Helicopters and the Future Machine: The Enigma Machine, vital to Britain's Second World War effort is re-examined.

The Viking Coin, the Ancient Disk and the Dead Girl that Saved Millions: See one of the most famous coins ever discovered, and a death mask of a girl who drowned in Paris.

With the help of modern science, uncover the secrets of health and wealth in Ancient Egypt from Queen Hatshepsut's death to a case of breast cancer.

Scientists and historians join forces to investigate whether colossal volcanoes toppled an ancient dynasty and reveal the true face of an ancient mummy.

The prime suspect of a gruesome triple homicide, wax sculptor Robert Irwin sold his story to finance his defence and escape the death penalty.

With a double indemnity insurance policy on her husband's life and a lover as an accomplice, what can go wrong with Ruthie Brown's plan to stage a murder.

A seller comes in with a poster by Henri de Toulouse-Lautrec, Chum unboxes some 1912 Yale baseball uniforms and Rick looks at a ukulele from 1919.

Rick and Corey race to San Diego to take a spin in the classic car Hell's Chariot, from the movie Grease.

A customer walks in with a Tommy Boy poster signed by Chris Farley. Meanwhile, Rick tries not to slip up when making a deal on a pair of snowshoes.

A woman brings in a Japanese matchlock rifle that weighs almost as much as she does, followed by two classics: a Superman figure and a Tadeo Fender Telecaster.

Alec attempts to forge a beast of a sword - the five-feet long, 16th Century German Flamberge Zweihander.

The Scarab, The Ark and the Rock: The team investigates some of the most remarkable artefacts from Tutankhamun's tomb, including an exquisite piece of jewellery.

Romans, Lost Treasure and a Leech: Roman dodecahedrons and baffling copper scrolls discovered in Israel come under the microscope next. Plus, a bizarre discovery in Whitby.

A Wisconsin collector shows off his prized pistol, while a former drag racer and petrolhead opens the doors to his stockpile of early Chevrolets.

A seller comes in with a poster by Henri de Toulouse-Lautrec, Chum unboxes some 1912 Yale baseball uniforms and Rick looks at a ukulele from 1919.

Chum gets his hands on a one-of-a-kind chair with a strange feature. Meanwhile, Corey pedals into the past with a toy inspired by the Weinermobile.

Mountain Man Slot Machine/Wild West BMW Motorcycle: The Garrett brothers bring in a vintage Mountain Man slot machine and a Wild West-themed vintage BMW motorcycle.

The Gallery 63 crew auctions off a Civil War document signed by Abraham Lincoln. The Garrett brothers bring in a rare Harley-Davidson.

Troy and Pickle attempt to track down a giant python known as the Night Serpent. Meanwhile, Tess convinces Bill to try out new hunting grounds.

Troy and Pickle witness how far the pythons have spread as Zak and Aaron take on a new type of beast. Meanwhile, Bill and Tes tackle some uninvited guests.

The American frontier is full of legends of cowboys, Native Americans, and outlaws. But what about the tales of cursed mountains, monsters and even UFOs.

Rick and Corey race to San Diego to take a spin in the classic car Hell's Chariot, from the movie Grease.

Ton and Allen land a surprising set of storage vaults containing a 1980s Ms Pac-Man arcade machine and a collection of vintage Air Jordan trainers.

Ton and Allen go head-to-head with a rival auction hunter. Plus, they find a retro pinball machine and a put a vintage breathalyser to the test.

The SS Normandie entered service in 1935 and remains the most powerful steam turbo-electric-propelled passenger ship ever built. (1 of.

Renowned for its sheer power, the awe-inspiring Queen Elizabeth is the Royal Navy's lead ship and largest ever constructed. (2 of.

That's the Way the Cookie Crumbles: Rick calls in a special guest to authenticate a Mick Foley T-shirt. Meanwhile, a seller walks in with an McDonald's cookie from the 1980s.

A Louisiana collector opens the doors to a pool hall-turned-catch-all, where Mike makes a discovery. Robbie and Jersey explore a property in Mississippi.

Viking Vs Gladiator: With the competition hotting up, the champion faces a new challenger and a new weapon - the deadly sica. Who will emerge victorious? (3 of.

Mike and Jersey dive into a collection of antique quackery, while Larry's barn features a multi-generational stockpile of vintage motorbikes and cars.

A diamond with a sinister past, the bones of a world-famous bard and a beach covered in cursed stones - who dares to disturb their peace.

For centuries, mankind has devised ingenious ways to hide information, from enigmatic puzzles to secret symbols. Can we unlock these great mysteries.

The alien autopsy film added fuel to the Roswell mystery. Philip Mantle recaps his investigation into the film and the man who allegedly discovered it. (2 of.