Forty miles west of La Paz, Bolivia - high in the Andes Mountains - lie the mysterious ancient ruins of Puma Punku. Could it have been built by extraterrestrials?

For millennia, people have believed that everyday objects can possess hidden energy. These talismans are seen to provide protection and good fortune.

Dr. Travis Taylor relives the most shocking and compelling phenomena that have taken place in the past year on Skinwalker Ranch.

Ton and Allen win some mobile storage vaults, and discover a Ms Pac-Man arcade machine from the 1980s and a collection of vintage Air Jordan trainers. (Series 2,

In Fort Lauderdale, Ton and Allen face-off against a major auction player. They uncover a retro Williams disco pinball machine, and put a vintage talking breathalyser to the test. (Series 2,

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

More than 10,000 crop circle formations have been documented and many display properties that defy explanation. Could they be of otherworldly origin?

In this head-to-head final round, bladesmiths must recreate Butterfly Swords - deadly combat swords that are ideal for chopping.

The Harrisons own and run Gold & Silver Pawn in Las Vegas, Nevada. Who would have thought that this ordinary, at first glance, family business would be such a high maintenance.

In California, Ton and Allen uncover a vicious high speed Quadzilla ATV and a pair of assassin's guns - a 1910s Remington Derringer and an 1880s Palm Squeezer. (Series 2,

The guys score a turn-of-the-century Thomas Edison gramophone with rare wax cylindrical records, and a one-man Addictor 190 Mini Boat designed for high-speed fun. (Series 2,

On the Appalachian: In the heart of the Appalachian Mountains is the world-renowned Clay Spencer Blacksmith shop, where three top smiths will be tested.

$1 million is on the line when a photograph of Abraham and Mary Todd Lincoln makes its way into the shop. Next, an Easter egg signed by the entire Bush family sends Chumlee hopping.

The guys strike gold with a 1930s "blasting machine" dynamite detonator box and an 1890s treasure chest with secret compartments. Ton smelts jewellery to forge bricks of silver. (Series 2,

Allen and Ton confront high-stakes competition and uncover the first ever pump action shotgun, a Winchester Model 1912, and a hunter's collection of big game, full-body taxidermy. (Series 2,

At one of the nation's oldest storage facilities south of Boston, Allen and Ton uncover an 1800s blackpowder whaling harpoon, and a Betsy Ross American flag. (Series 2,

In the nearly 2,000-year-old text called "The Zohar" there is a curious passage that describes seven Earths - each of which is said to be populated by both human and non-human intelligences.

Storage-unit auctions are the newest and biggest untapped source for hidden treasures, and opportunistic individuals bid on unclaimed properties hoping to strike gold. Welcome to Storage Wars.

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?

Four smiths face a challenge to salvage steel from five tons of junk, while two more smiths forge the longest weapon in the show's history.

A friend shows Rick and Chum a star-studded collection of photos, while Rick races for a chance to bid on a car once owned by a legendary actor.

The Skinwalker team broadcasts a mysterious signal recorded on the property over the airwaves of a local radio station that evokes a stunning UAP response.

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.

During World War II, the Nazi war machine creates specialised death camps. At Sobibor, Poland, a small number of Jews engineer a mass escape.

In Boston, a 25-foot tidal wave of... Molasses? A dancing plague that kills 100 people? A surgery with a 300% mortality rate? We search the globe for the strangest and most bizarre deaths on record.

Deep in Boston's south side, Allen and Ton score a WW2 Stuart M3 tank barrel and heavy duty tank treads. They also discover an industrial meat slicer in the ultimate deli unit. (Series 2,

Allen and Ton take on North Texas and discover a Winchester 1886 rifle originally invented to kill buffalo, and a collection of 1950s electric slot cars that they test on a monster track. (Series 2,

Allen and Ton take on Texas' most elite buyers. The guys uncover a military-grade Tomahawk cruise missile jet engine and a century-old handcrafted Wild West cowboy saddle. (Series 2,

Stairway to Pawn: Rick checks out a bass guitar signed by Led Zeppelin's John Paul Jones and The Who's John Entwistle, but is he all about that bass?

The Harrisons own and run Gold & Silver Pawn in Las Vegas, Nevada. Who would have thought that this ordinary, at first glance, family business would be such a high maintenance.

As the team drills into the rock Mesa on Skinwalker Ranch, they discover a strange void containing an impenetrable object.

In Boston, a 25-foot tidal wave of... Molasses? A dancing plague that kills 100 people? A surgery with a 300% mortality rate? We search the globe for the strangest and most bizarre deaths on record.

From the ancient Babylonian's to modern day urban explorers, mankind has always been fascinated by abandoned places.

The smiths must recreate a fearsome battle weapon, the Kampilan. Their weapons must survive brutal testing, and only one will pull through by a hair to claim the title of Forged In Fire Champion.

When Rick and Corey discover a newfound love for an old Buick Roadmaster, will they be able to rev up a deal? Later, Chum checks out a doll and volleyball signed by Tom Hanks.

A prisoner with a love of crime novels becomes the star of his own story when he escapes from Mississippi's notorious Parchman Penitentiary.

The Harrisons own and run Gold & Silver Pawn in Las Vegas, Nevada. Who would have thought that this ordinary, at first glance, family business would be such a high maintenance.

Look into the top theories behind where the tomb of Cleopatra may be located.

Four smiths face a challenge to salvage steel from five tons of junk, while two more smiths forge the longest weapon in the show's history.

The smiths must recreate a fearsome battle weapon, the Kampilan. Their weapons must survive brutal testing, and only one will pull through by a hair to claim the title of Forged In Fire Champion.