Les's return proves a shock for Seth and Ashley, who have let profits drop in his absence. Back in charge, Les cuts a deal that could set the shop on fire.

Ashley questions whether the pawn store has a thief in its midst when two teens come in with news of a scam. (S10, ep 5).

Ashley's regimental behaviour concerns Les, who thinks she's being a little too rough on Seth. But Seth releases his frustration with a sledgehammer. (S10, ep 6).

UFOs are the biggest mystery of our time and somebody - or something - seems determined to keep it that way. (S3, ep 9).

Area 51 is considered the ultimate top secret facility, but there is another military site, known as Area 52, where strange phenomena have been witnessed for 10 years. (S3, ep 10).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 1).

Explore whether the Gods of Greece including Zeus, Apollo and Poseidon, were actually extra-terrestrial visitors to Earth. (S15, ep 18).

Delve into the incredible collection of UFO stories of first-hand witnesses, from flying saucers to strange encounters in sugar cane fields. (S1, ep 1).

On 8 April 2011, the FBI declassified decades of top secret government documents for the first time. Here, experts examine the possibility of the end of the world. (S1, ep 1).

From the Cold War to the TV set, experts question whether the government is actively controlling what you think, how you act and what you believe. (S1, ep 3).

Are governments around the world using weather control to incite the next World War and possibly destroy the planet? A team of experts investigate. (S1, ep 6).

Animal cloning has been a reality for decades but the disturbing truth is that human cloning may be much closer than you think. (S1, ep 7).

Is this half-man, half-ape simply a figment of our collective imagination or does he really exist? Experts ask whether he is being hidden from us and why. (S1, ep 8).

Every culture and religion on the planet believes that an evil one will usher in the end of days. But who is this Anti-Christ? And how can we hope to stop him? (S1, ep 9).

We rely on machines for virtually every aspect of modern life. But is technology going too far, too fast? And will humans suffer the consequences? (S1, ep 10).

Discover the locations of stargate portals around the world. Thought to be doorways to wormholes in time, who is battling to open them and why? (S1, ep 11).

A look at the CIA's rumoured investment in psychological operations. Could there be an army of remote viewers watching American citizens today? (S1, ep 13).

Could the ability to travel through time be real? Experts unseal new evidence suggesting this phenomenon of science fiction might not be as far-fetched as it seems. (S1, ep 16).

From Fort Knox to Hanger 18 and Camp Hero, discover the shocking truth hidden inside the government's secret and highly-fortified areas. (S1, ep 20).

Many predict a cataclysmic event will soon spell the end of the human race. If disaster struck, is there a way we could save ourselves from extinction? (S1, ep 21).

Marty and Matty help investigate a mysterious island where a notorious English pirate is believed to have hidden millions in plundered treasure. (S3, ep 8).

The team's hopes of finding the fabled treasure are intensified as they procure what could be the final piece of the puzzle. (S10, ep 8).

Professor Alice Roberts strives to get to the bottom of Elizabeth I's death, using research, medical expertise and dramatic recreation to determine possible reasons. (S1, ep 2).

The Boy Who Should Have Been King: Explore the tale of the teenage Duke of Brittany and would-be King of England's suspicious demise. (S1, ep 3).

from hidden worlds to unexplainable natural phenomena. (S4, ep 11).

from hidden worlds to unexplainable natural phenomena. (S4, ep 12).

It's panic stations for the Clermont Diggers when a tourist goes missing. Meanwhile, prospector April is in the line of fire in Ballarat. (S2, ep 2).

UFOs are the biggest mystery of our time and somebody - or something - seems determined to keep it that way. (S3, ep 9).

Area 51 is considered the ultimate top secret facility, but there is another military site, known as Area 52, where strange phenomena have been witnessed for 10 years. (S3, ep 10).

The team find the worst MGF in the country, with serious leaks and faded wings - but the boys quickly discover that a cheap car is cheap for a reason. (S3, ep 1).

The team know the BMW Mini is a popular car - but with so many of them around, will it be too difficult to make one that stands out from the crowd? (S3, ep 2).

New. Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 34).

Rick shoots over to England for an explosive chance to test out antique weapons.Then, an item that inspired a classic movie rifles into the shop. (S1, ep 15).

One of the US's oldest storage facilities throws up a heap of unusual items, including an 1800s whaling harpoon and a Betsy Ross American flag. (S2, ep 11).

Kenny tries to honour the history of San Bernardino, recording a win along the way. Also, Brandi shows her literary prowess volume by volume. (S13, ep 11).

Series following part-gamblers, part-antique experts who bid for the contents of abandoned storage units. When the doors open, will it be treasure or trash? (S13, ep 12).

Les buys memorabilia from the last remaining Bill Knapp's restaurant for $200, but Ashley fears that it won't sell. (S10, ep 10).

Les offers to buy a diamond-encrusted Audemars Piguet watch from a customer but asks his watch expert take a closer look at it first. (S10, ep 11).

With the price of gold continuing to drop and the store still losing money, Seth brings in a consultant to determine the best solution to the problem. (S10, ep 12).

UFOs have been caught on camera across the US, yet the government denies the existence of extraterrestrial life. Has the military been keeping secrets? (S2, ep 9).

Andy heads to the home of palaeontology on the Jurassic Coast and braves the collapsing cliffs of Lyme Regis to bring back one of its many fossils. (S1, ep 10).

The Pyramids of Giza could be a map of the stars. First responders bring hope during Hurricane Katrina. An Indonesian volcano erupts in a shade of blue. (S1, ep 10).

Scientists have forever been involved in a quest to understand the universe. But for each answer science provides, more questions arise. (S3, ep 22).

It's hands up at the shop when someone brings in a toy gun from a classic 60s show. Will Chum be a tough negotiator? (S1, ep 16).

Rene makes a costly gamble. Meanwhile, Brandi wades through trash and Ivy and Pops clear up confusion over a massive mysterious mechanism.

Brandi tries to teach Danielle a lesson about the true meaning of trash. Meanwhile, Ivy gets distracted by a decoy.

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials. (S1, ep 3).

An investigation into amazing ancient sites built with acoustic purpose, indicating that their builders could have been aware of a harmonic code.

UFO experts investigate whether the value, reverence and desire for gold is the result of extraterrestrial landings in the ancient past. (S2, ep 10).

Rick shoots over to England for an explosive chance to test out antique weapons.Then, an item that inspired a classic movie rifles into the shop. (S1, ep 15).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 35).

The fellowship is stunned when evidence suggests that a dam lies buried at the end of the swamp, corroborating both Fred Nolan's theory and Zena Halpern's map. (S10, ep 9).

Matty and Tony re-join the search and excavation of the Whydah wreckage with Barry and his team in Cape Cod, near a graveyard of sunken cannons. (S3, ep 9).

A look into the many prison escapes of James Earl Ray, the man who assassinated Martin Luther King. (S1, ep 8).

Experts and scientists expose more dark secrets, forgotten treasures, and lost relics from some of the coldest places on Earth. (S2, ep 3).

UFOs have been caught on camera across the US, yet the government denies the existence of extraterrestrial life. Has the military been keeping secrets? (S2, ep 9).

Andy tracks down the site of the original Stonehenge, meets a childhood witness of Wales' most famous UFO incident and takes part in a comedic hunt for the Welsh Wildman. (S1, ep 9).

Seth is called upon to repair the malfunctioning computer system while Ashley is left to deal with an irate customer who was given the wrong ring. (S10, ep 7).

When people talk about the quality of the classic Rolls Royce, they don't mean this one in Yorkshire. Cheap and full of mould - what's the worst that can happen? (S3, ep 6).

Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help. (S1, ep 2).

Since the 20th century, scientists, journalists and investigators have been documenting UFOs. Today, there is even more proof of extraterrestrial visitation.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 35).

It's hands up at the shop when someone brings in a toy gun from a classic 60s show. Will Chum be a tough negotiator? (S1, ep 16).

Allen and Ton score a World War II Stuart M3 tank barrel and heavy-duty tank treads. In the ultimate deli unit, they discover a gigantic meat slicer. (S2, ep 12).

It's business as usual until a vintage Mercury Zephyr arrives and shakes things up. Also, Darrell stumbles over upon the ultimate sketch artist. (S13, ep 13).

Ivy and Pops go head-to-head, and when Brandi's secret weapon lands her more than she bargained for, Kenny swoops in to brighten up her day. (S13, ep 14).

Les feels hurt when he finds out that Seth is at a rival pawn shop and fears that he is quitting American Jewelry to join the competition. (S10, ep 13).

Les is devastated when he suspects Seth of doing deals behind his back with a competitor. Will their confrontation split the family apart for good? (S11, ep 1).

Les and Ashley are tempted to take a chance on the world's largest fishing lure, but Seth thinks it will be a tough sell. (S11, ep 2).

UFO experts investigate whether the value, reverence and desire for gold is the result of extraterrestrial landings in the ancient past. (S2, ep 10).

Andy visits Britain's oldest shop, drinks coffee with a corpse and discovers a 19th-century time machine hidden in an urban cemetery. (S1, ep 12).

The Lagina Brothers and Matty Blake join the famous treasure-hunting family of the late Mel Fisher to search for emeralds from the Atocha shipwreck. (S3, ep 1).

Learn about the mysterious triangles - in Bermuda, Alaska, Japan and elsewhere - where ships, planes and people enter and disappear. (S3, ep 25).

Rick travels over to Boston to get a steal on an amazing Red Sox baseball collection - while back at the shop, Corey targets an interesting WWII jacket. (S1, ep 17).

Kenny tries to honour the history of San Bernardino, recording a win along the way. Also, Brandi shows her literary prowess volume by volume. (S13, ep 11).

Series following part-gamblers, part-antique experts who bid for the contents of abandoned storage units. When the doors open, will it be treasure or trash? (S13, ep 12).

Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity. (S1, ep 4).

Peru - famous for its prehistoric ruins - is one of the most mysterious places on Earth - but could it also be a site of extraterrestrial visitation.

New. As technology pushes mankind into the future, many wonder about the origins of this innovative knowledge. Could our inventions be the products of reverse engineered alien technology.

It's hands up at the shop when someone brings in a toy gun from a classic 60s show. Will Chum be a tough negotiator? (S1, ep 16).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 36).

Captain Greg Turner races a winter storm to save his stranded son, while Mack Kelley navigates unpredictable weather to keep family traditions alive. (S1, ep 1).

A high-rise hotel under construction on a busy New Orleans street unexpectedly collapses, leaving citizens baffled. (3 of 6).

Another breakdown triggers all out war between the Clermont Diggers and the Rookie Miners, while a storm causes havoc for Gold Sniper and Rob. (S2, ep 3).

A hunt for the deadly Scorpion Fish in the Baja California ocean leads to a toxic sting, while the Toe biter results in the weirdest pain profile yet. (S1, ep 8).

UFO experts investigate whether the value, reverence and desire for gold is the result of extraterrestrial landings in the ancient past. (S2, ep 10).

Andy heads to the home of palaeontology on the Jurassic Coast and braves the collapsing cliffs of Lyme Regis to bring back one of its many fossils. (S1, ep 10).

Les buys memorabilia from the last remaining Bill Knapp's restaurant for $200, but Ashley fears that it won't sell. (S10, ep 10).

Gus and Will are looking for a BMW, but Gus is drawn to a classic Audi that catches his eye and manages to convince Will - who falls in love with it too. (S3, ep 7).

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials. (S1, ep 3).

An investigation into amazing ancient sites built with acoustic purpose, indicating that their builders could have been aware of a harmonic code.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 36).

Rick travels over to Boston to get a steal on an amazing Red Sox baseball collection - while back at the shop, Corey targets an interesting WWII jacket. (S1, ep 17).

Allen and Ton uncover an 1886 rifle invented to kill buffalo. Then they head to the monster track to test 1950s electric slot cars. (S2, ep 13).

Kenny's fear of sharks inspires a controversial wardrobe choice, Rene tries to intimidate the competition and Darrell has tunnel vision. (S13, ep 15).

Barry works with a masked bidder and the pair develop a winning strategy. Meanwhile, Rene checks out a risqué room. (S13, ep 16).

When Ashley smells cannabis in the warehouse, the hunt is on to find out who the drugs culprit is. Will Les's big cash reward bring out the snitches? (S11, ep 3).

Les has the opportunity to get his hands on truckloads of brand new goods that could change the store forever. (S11, ep 4).

When Ashley helps Seth use the internet, all hell breaks lose when she puts a rare Olympic torch from Seth's personal collection up for sale. (S11, ep 5).

New. As technology pushes mankind into the future, many wonder about the origins of this innovative knowledge. Could our inventions be the products of reverse engineered alien technology.

Host Tony Harris separates the real from the fake in some of the top UFOs caught on camera in recent history. (S2, ep 1).

Marty and Matty dig for treasure on the beaches of Tampa, Florida, believed to have been hidden in the early 1800s by a notable French pirate. (S3, ep 2).

The Founding Fathers established the pillars of freedom and democracy in the US, but what truths have remained in the shadows about these men? (S3, ep 26).

When someone brings in an antique key gun, can the Pawn Stars unlock the mystery behind it? Then, a rare 1600s blade slices its way into the shop. (S1, ep 18).

It's business as usual until a vintage Mercury Zephyr arrives and shakes things up. Also, Darrell stumbles over upon the ultimate sketch artist. (S13, ep 13).

Ivy and Pops go head-to-head, and when Brandi's secret weapon lands her more than she bargained for, Kenny swoops in to brighten up her day. (S13, ep 14).

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks. (S1, ep 5).

A look at Mount Shasta in northern California, which is rumoured to be a hotbed of strange events and otherworldly visitors from Bigfoot to UFOs.

From Truman to Trump, there has been a legacy of secrecy and controversy surrounding UFOs and the US presidency. Could these powerful leaders be hiding the truth from the public.

Rick travels over to Boston to get a steal on an amazing Red Sox baseball collection - while back at the shop, Corey targets an interesting WWII jacket. (S1, ep 17).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 37).

Throughout the world, structures exist that would be almost impossible to duplicate today. How were ancient civilisations able to build them? And why? (S3, ep 38).

The team searches the sea for huge and aggressive albino sperm whales that inspired the novel Moby Dick. (S3, ep 24).

As they look for a way to cross over into the afterlife, lost souls terrify the living. A shadowy entity torments a young boy, while a teen hears whispers. (S1, ep 3).

A teenage girl confronts a malicious entity in an asylum, while a ghostly nurse comforts a man after a terrifying encounter. (S2, ep 3).

New. As technology pushes mankind into the future, many wonder about the origins of this innovative knowledge. Could our inventions be the products of reverse engineered alien technology.

Andy visits Britain's oldest shop, drinks coffee with a corpse and discovers a 19th-century time machine hidden in an urban cemetery. (S1, ep 12).

Les feels hurt when he finds out that Seth is at a rival pawn shop and fears that he is quitting American Jewelry to join the competition. (S10, ep 13).

The guys buy a legendary Golf and instantly fall for it - but they get a nasty surprise when taking a closer look around the wheel well. (S3, ep 8).

Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity. (S1, ep 4).

Peru - famous for its prehistoric ruins - is one of the most mysterious places on Earth - but could it also be a site of extraterrestrial visitation.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 37).

When someone brings in an antique key gun, can the Pawn Stars unlock the mystery behind it? Then, a rare 1600s blade slices its way into the shop. (S1, ep 18).

Allen and Ton come up against Texas's most elite buyers as they discover a military-grade cruise missile jet engine and a Wild West saddle. (S2, ep 14).

Lisa inadvertently causes complications in California, while Ivy and his son conjure up a locker with some mysterious sports equipment. (S13, ep 17).

Brandi tries to keep things positive in Perris. Meanwhile, Gunter and Rene lock horns over a locker full of rubbish. (S13, ep 18).

Ashley has to face the consequences of her rash decision, Seth takes a ride in a hovercraft and Les does business with Muhammad Ali Jr. (S11, ep 6).

When Ashley steals a deal from right under Les's nose, the family decides to hold a father-daughter sales competition. (S11, ep 7).

When Les finds out that Seth has spent thousands of dollars at a sports card auction, he challenges his son to sell all the new items within a week. (S11, ep 8).

From Truman to Trump, there has been a legacy of secrecy and controversy surrounding UFOs and the US presidency. Could these powerful leaders be hiding the truth from the public.

A Tennessee man may have captured footage of the infamous Dogman creature without realising it. (S2, ep 2).

A sword discovered at the bottom of a river may be the famed Excalibur. Also, a doorbell cam captures possible proof of teleportation. (S2, ep 4).

Secrets of the Sterncastle: Matty and Tony join another epic hunt with the Fisher family to search for a motherload of treasure linked to the Atocha. (S3, ep 3).

All over the world, there are giant monoliths that our ancient ancestors carved out of solid rock. But what was the purpose of these huge stone monuments? (S3, ep 29).

A signed letter from a former president has Rick and Corey singing Sammy Davis Jr's praises. Then, a giant bird egg rolls into Rick's coop. (S1, ep 19).

Kenny's fear of sharks inspires a controversial wardrobe choice, Rene tries to intimidate the competition and Darrell has tunnel vision. (S13, ep 15).

Barry works with a masked bidder and the pair develop a winning strategy. Meanwhile, Rene checks out a risqué room. (S13, ep 16).

Could some of our ancient texts and structures be home to secret messages left by alien ancestors? If so, what can we learn from them? (S1, ep 6).

A countdown of the world's top 10 most mysterious sites, from the blocks of Stonehenge to the stones of Puma Punku.

Man has always been captivated with outer space. But is it possible that our government has been hiding top-secret space missions to the Moon and Mars.

When someone brings in an antique key gun, can the Pawn Stars unlock the mystery behind it? Then, a rare 1600s blade slices its way into the shop. (S1, ep 18).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 38).

In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky? (S15, ep 19).

Is a dead mermaid really preserved in Japan? And are UFOs attracted to nuclear facilities? (S3, ep 19).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 2).

Join the journey of five families touched by reincarnation, from two children who meet someone from their past life to a child with religious knowledge his parents can't explain.

The team investigates a woman's claims of being choked by an invisible force while sleeping. They believe the spirit of a girl named Meagan is to blame. (S1, ep 1).

Host Tony Harris separates the real from the fake in some of the top UFOs caught on camera in recent history. (S2, ep 1).

When Ashley smells cannabis in the warehouse, the hunt is on to find out who the drugs culprit is. Will Les's big cash reward bring out the snitches? (S11, ep 3).

The classic Fiat 500 is too expensive, so the team turn their attention to a rust-free Fiat 126 - but the complications turn into a huge nightmare. (S3, ep 9).

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks. (S1, ep 5).

A look at Mount Shasta in northern California, which is rumoured to be a hotbed of strange events and otherworldly visitors from Bigfoot to UFOs.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 38).

A signed letter from a former president has Rick and Corey singing Sammy Davis Jr's praises. Then, a giant bird egg rolls into Rick's coop. (S1, ep 19).

In the industrial hub of Los Angeles, Ton and Allen unearth a 1981 Bobcat 743 Frontloader and a trench-defending helmet-bashing mace from World War I. (S2, ep 15).

Ivy goes up against an upstart buyer in California, while Lisa gets more than she bargains for while angling for a smaller unit. (S13, ep 19).

Brandi lets Danielle lead the way in California, and their bargain purchase is a trip. Also, Rene takes a gamble on interesting packaging. (S13, ep 20).

After spending a fortune on sports memorabilia, Seth rushes to sell it all before his dad's deadline. Later, Les checks out a Starfire Convertible. (S11, ep 9).

Seth has his eye on a valuable guitar, a customer tries to buy a fancy watch and Les strikes a deal. (S11, ep 10).

When the security guards start spooking customers, Les sends them home to teach them a lesson. (S11, ep 11).

Man has always been captivated with outer space. But is it possible that our government has been hiding top-secret space missions to the Moon and Mars.

A large black creature emerging from a family's toilet could be some kind of mythical creature. An astronaut spots something intriguing. (S2, ep 5).

Could a breed of dogs have the power to freeze time? Do invisibility cloaks really exist? The team examine the videos and reach a verdict. (S2, ep 6).

Taking a new approach, Rick and Matty return to Poverty Island in Lake Michigan to search for missing Civil War gold. (S3, ep 4).

Through records in historical texts, oral tradition and folklore, William Shatner explores how a once-thriving community becomes a lost city. (S3, ep 30).

Rick eyes a collection of James Bond movie trading cards. Also, a seller brings in an old Chinese Bell, and on Lake Tahoe, there's a vintage sailboat. (S1, ep 20).

Lisa inadvertently causes complications in California, while Ivy and his son conjure up a locker with some mysterious sports equipment. (S13, ep 17).

Brandi tries to keep things positive in Perris. Meanwhile, Gunter and Rene lock horns over a locker full of rubbish. (S13, ep 18).

Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact. (S1, ep 7).

Special episodes counting down the top 10 of everything from mysterious sites around the world to perplexing artefacts and cover-ups.

In the Cold War, Project Blue Book came into being, aimed to analyse UFO observations. But, to this day, many cases raise questions. (S1, ep 1).

A signed letter from a former president has Rick and Corey singing Sammy Davis Jr's praises. Then, a giant bird egg rolls into Rick's coop. (S1, ep 19).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 39).

Documentary telling the terrifying true story of the Bell family, who were supposedly haunted by an apparition hellbent on destroying their lives in the early 1800s.

Professor Alice Roberts strives to get to the bottom of Elizabeth I's death, using research, medical expertise and dramatic recreation to determine possible reasons. (S1, ep 2).

Andy tracks down the site of the original Stonehenge, meets a childhood witness of Wales' most famous UFO incident and takes part in a comedic hunt for the Welsh Wildman. (S1, ep 9).

Uncover the shocking truth about alien remains as experts investigate unsettling reports of extraterrestrial bodies recovered from crashed UFOs. (S3, ep 16).

Man has always been captivated with outer space. But is it possible that our government has been hiding top-secret space missions to the Moon and Mars.

A Tennessee man may have captured footage of the infamous Dogman creature without realising it. (S2, ep 2).

A sword discovered at the bottom of a river may be the famed Excalibur. Also, a doorbell cam captures possible proof of teleportation. (S2, ep 4).

Ashley has to face the consequences of her rash decision, Seth takes a ride in a hovercraft and Les does business with Muhammad Ali Jr. (S11, ep 6).

The guys find a Toyota Sera - a rare concept car with gull-wing doors and a 50s-style glass roof - but it's not driveable in the way they need it. (S3, ep 10).

Could some of our ancient texts and structures be home to secret messages left by alien ancestors? If so, what can we learn from them? (S1, ep 6).

A countdown of the world's top 10 most mysterious sites, from the blocks of Stonehenge to the stones of Puma Punku.

A new team surface and pose a threat to Mo, a three-wheeled item entices Matthew and a cluster of table-tennis balls cause confusion. (S2, ep 9).

Buyers clash over outdoor BBQs and a portable rave unit. Mo and Ty take a big gamble on a speedy prize. (S2, ep 10).

Buyers clash over a playground, a treasure trove of bicycle gear and a mystery container. (S2, ep 11).

Four containers are auctioned after their holiday deadline passes, Uzi gets a fright and an enigmatic logo could lead to a cash windfall. (S2, ep 12).

It's the opening week of a new season, and for the fishermen of Gloucester, Massachusetts, the summer ahead promises the chance for big fortunes. (S6, ep 1).

Every boat except the Wicked Pissah caught fish during the first week, so all eyes are on Captain Paul Herbert to land his first tuna. (S6, ep 2).

Captain Greg Turner races a winter storm to save his stranded son, while Mack Kelley navigates unpredictable weather to keep family traditions alive. (S1, ep 1).

The team searches the sea for huge and aggressive albino sperm whales that inspired the novel Moby Dick. (S3, ep 24).

The team investigates some of the most remarkable artefacts from Tutankhamun's tomb, including an exquisite piece of jewellery. (S1, ep 1).

Roman dodecahedrons and baffling copper scrolls discovered in Israel come under the microscope next. Plus, a bizarre discovery in Whitby. (S1, ep 2).

While the Illuminati secret order was disbanded in 1785, many believe this elite group still hold the power and pull strings from behind closed doors. (S1, ep 2).

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials. (S1, ep 3).

An investigation into amazing ancient sites built with acoustic purpose, indicating that their builders could have been aware of a harmonic code.

Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity. (S1, ep 4).

Peru - famous for its prehistoric ruins - is one of the most mysterious places on Earth - but could it also be a site of extraterrestrial visitation.

A look at Mount Shasta in northern California, which is rumoured to be a hotbed of strange events and otherworldly visitors from Bigfoot to UFOs.

In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky? (S15, ep 19).

Is a dead mermaid really preserved in Japan? And are UFOs attracted to nuclear facilities? (S3, ep 19).

Throughout the world, structures exist that would be almost impossible to duplicate today. How were ancient civilisations able to build them? And why? (S3, ep 38).

The team searches the sea for huge and aggressive albino sperm whales that inspired the novel Moby Dick. (S3, ep 24).

As they look for a way to cross over into the afterlife, lost souls terrify the living. A shadowy entity torments a young boy, while a teen hears whispers. (S1, ep 3).

A teenage girl confronts a malicious entity in an asylum, while a ghostly nurse comforts a man after a terrifying encounter. (S2, ep 3).

A mother discovers her daughter's imaginary friend is a terrifying demonic entity. Also, a historic photograph triggers a terrifying haunting. (S1, ep 5).

Les buys memorabilia from the last remaining Bill Knapp's restaurant for $200, but Ashley fears that it won't sell. (S10, ep 10).

Les offers to buy a diamond-encrusted Audemars Piguet watch from a customer but asks his watch expert take a closer look at it first. (S10, ep 11).

With the price of gold continuing to drop and the store still losing money, Seth brings in a consultant to determine the best solution to the problem. (S10, ep 12).

Les feels hurt when he finds out that Seth is at a rival pawn shop and fears that he is quitting American Jewelry to join the competition. (S10, ep 13).

Les is devastated when he suspects Seth of doing deals behind his back with a competitor. Will their confrontation split the family apart for good? (S11, ep 1).

Les and Ashley are tempted to take a chance on the world's largest fishing lure, but Seth thinks it will be a tough sell. (S11, ep 2).

When Ashley smells cannabis in the warehouse, the hunt is on to find out who the drugs culprit is. Will Les's big cash reward bring out the snitches? (S11, ep 3).

Les has the opportunity to get his hands on truckloads of brand new goods that could change the store forever. (S11, ep 4).

When Ashley helps Seth use the internet, all hell breaks lose when she puts a rare Olympic torch from Seth's personal collection up for sale. (S11, ep 5).

Ashley has to face the consequences of her rash decision, Seth takes a ride in a hovercraft and Les does business with Muhammad Ali Jr. (S11, ep 6).

The team investigates growing numbers of flying orbs sightings, with witnesses also experiencing odd dreams, premonitions and deep fear. (S3, ep 11).

The team attempts to uncover the US military's first responses to UFO encounters, leading them to revisit a suspected UFO crash site in California. (S3, ep 12).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 2).

What is it about the number 12? It holds divine significance in numerous sacred traditions and it's found repeatedly in ancient architecture. But why? (S12, ep 35).

Investigating the disappearance of pilot Frederick Valentich, whose last transmission gives an account of what he experienced. (S1, ep 2).

Humanity's rapid technological advances have completely transformed the way we live - but are these innovations the result of human effort alone? (S2, ep 1).

Investigators reveal the secret history between US presidents and UFOs, from FDR's knowledge to JFK's alleged plan to share extraterrestrial secrets. (S2, ep 2).

UFO sightings and claims of alien abduction go hand in hand, but never-before-seen evidence brings new credibility to the alleged alien implants left behind. (S2, ep 3).

Startling evidence suggests contact with interstellar travelers in the distant past may have influenced mankind and many of our sacred sites. (S2, ep 4).

Using archival recordings, transcripts and incident reports, UFO researchers investigate what really happened during incredible encounters with UFOs. (S2, ep 5).

Evidence reveals the development of secret Nazi weapons shortly after an alleged UFO crashed in Germany - but were the US government also involved? (S2, ep 6).

Matty and Tony re-join the excavation of the Whydah wreckage with Barry and his team in Cape Cod, near a graveyard of sunken cannons. (S3, ep 9).

The fellowship is stunned when evidence suggests that a dam lies buried at the end of the swamp, corroborating both Fred Nolan's theory and Zena Halpern's map. (S10, ep 9).

The Party King: Professor Alice Roberts dives into the facts surrounding the death of King George IV, looking to shed startling new light on his final few days. (S2, ep 1).

The Queen, Her Lover and His Wife: The death of Robert Dudley's wife in 1560 caused a scandal - as the nobleman was Elizabeth I's alleged lover. (S1, ep 4).

from hidden worlds to unexplainable natural phenomena. (S4, ep 13).

from hidden worlds to unexplainable natural phenomena. (S4, ep 14).

Another breakdown triggers all out war between the Clermont Diggers and the Rookie Miners, while a storm causes havoc for Gold Sniper and Rob. (S2, ep 3).

The team investigates growing numbers of flying orbs sightings, with witnesses also experiencing odd dreams, premonitions and deep fear. (S3, ep 11).

The team attempts to uncover the US military's first responses to UFO encounters, leading them to revisit a suspected UFO crash site in California. (S3, ep 12).

When people talk about the quality of the classic Rolls Royce, they don't mean this one in Yorkshire. Cheap and full of mould - what's the worst that can happen? (S3, ep 6).

Gus and Will are looking for a BMW, but Gus is drawn to a classic Audi that catches his eye and manages to convince Will - who falls in love with it too. (S3, ep 7).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 39).

Rick eyes a collection of James Bond movie trading cards. Also, a seller brings in an old Chinese Bell, and on Lake Tahoe, there's a vintage sailboat. (S1, ep 20).

The guys land a 1970s Z-Flex Jimmy Plumer Poolrider skateboard with artwork by Doug Smith and a Kevlar bulletproof vest and helmet used by SWAT teams. (S2, ep 16).

Brandi shows up in Riverside, dressed to distract. Meanwhile, Rene bites off more than even he can chew. (S13, ep 21).

A small animal catches Lisa off guard, while Ivy and Isaiah barrel their way through a unit, leaving them in need of a drink. (S1, ep 22).

Les makes a major deal with a new supplier for a truckload of TVs, before getting excited over some rare Detroit Tigers baseball memorabilia. (S11, ep 12).

Les has stainless steel jewellery coming to the shop, which Ashley refuses to sell. But Ashley and Seth's cousin Karen turns up and overrules her. (S11, ep 13).

Cousin Karen is ready to shake things up on the showroom floor, but Ashley is less than thrilled to have someone invading her turf. (S12, ep 1).

In the Cold War, Project Blue Book came into being, aimed to analyse UFO observations. But, to this day, many cases raise questions. (S1, ep 1).

A mysterious creature spotted in a Chinese river may be the infamous water dragon. Also, a child miraculously survives a terrifying crash. (S2, ep 3).

A mysterious creature is discovered in Russia, a possible genetic experiment goes wrong and a fire has a mind of its own. (S2, ep 7).

Matty travels to the swamps of North Carolina to help a father and son excavating a mining dredge believed to contain vast riches. (S3, ep 5).

William Shatner digs deep into our ancient past to discover our predecessors' epic feats of engineering, from the remarkable to the inexplicable. (S3, ep 20).

A seller brings in an unusual diamond crafted from the DNA of a musical genius. A vintage book collection also comes in, and Chum has a birthday surprise for Rick.

Husband and wife team, Brandon and Lori Bernier, travel the United States in search of rare treasures at various storage facility auctions. (S1, ep 1).

Brandon and Lori go to war over a record producer's storage unit and unearth what could be a priceless piece of rock and roll history. (S1, ep 2).

Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence. (S1, ep 8).

Special episodes counting down the top 10 of everything from mysterious sites around the world to mystifying artefacts and cover-ups.

Explore the truth behind the organisation known as the MJ-12, an alleged secret committee of elite experts. Are there links to Roswell? (S1, ep 2).

Rick eyes a collection of James Bond movie trading cards. Also, a seller brings in an old Chinese Bell, and on Lake Tahoe, there's a vintage sailboat. (S1, ep 20).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 40).

The archaeologists endeavour to uncover a new feature discovered on lot five, while the scientists finally manage to identify the area where the gold is located. (S10, ep 10).

Joined by companion Matty, brothers Rick and Marty Lagina look back on their richest adventures stretching back over the previous year. (S3, ep 10).

Witness the truth behind the Ancient Egyptian superpower we know today as experts dive into the history of their iconic monuments and strong leaders. (S2, ep 1).

Taylor unearths new testimony from a witness to Slumach's execution and a deathbed letter sends Adam and Kru on a dangerous glacial trek. (S1, ep 1).

In the Cold War, Project Blue Book came into being, aimed to analyse UFO observations. But, to this day, many cases raise questions. (S1, ep 1).

A large black creature emerging from a family's toilet could be some kind of mythical creature. An astronaut spots something intriguing. (S2, ep 5).

Could a breed of dogs have the power to freeze time? Do invisibility cloaks really exist? The team examine the videos and reach a verdict. (S2, ep 6).

After spending a fortune on sports memorabilia, Seth rushes to sell it all before his dad's deadline. Later, Les checks out a Starfire Convertible. (S11, ep 9).

The team acquire a Triumph Herald that has only had two owners. If they can repair the engine, brakes and gears, they've got a gem on their hands. (S3, ep 11).

Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact. (S1, ep 7).

Special episodes counting down the top 10 of everything from mysterious sites around the world to perplexing artefacts and cover-ups.

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 40).

A seller brings in an unusual diamond crafted from the DNA of a musical genius. A vintage book collection also comes in, and Chum has a birthday surprise for Rick.

Ton and Allen score a knock-out as Hollywood hands them an autographed Raging Bull poster and a rare 1870s knuckle-duster. (S2, ep 17).

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. (S5, ep 3).

Brandon and Lori go to war over a record producer's storage unit and unearth what could be a priceless piece of rock and roll history. (S1, ep 2).

When Les takes his niece Karen under his wing to help out at the jewellery counter, Ashley doesn't hide her jealousy well. (S12, ep 2).

Seth thinks Les is stuck in the past after hand delivering their gold to a refinery - and bets his dad that his new mail order service will improve things. (S12, ep 3).

Tensions between Karen and Ashley explode on the sales floor so Les puts them both in the doghouse. (S12, ep 4).

Explore the truth behind the organisation known as the MJ-12, an alleged secret committee of elite experts. Are there links to Roswell? (S1, ep 2).

A baby shark develops an eerie, humanlike face. Meanwhile, a possible alien invasion takes place over Lake Superior. (S2, ep 8).

A potential real-life iron man is spotted flying through the skies of Los Angeles, while aliens set up base at the North Pole. (S2, ep 9).

Rick, Tony and Matty join Barry join the search for artefacts and treasure connected to the Whydah shipwreck off the coast of Cape Cod. (S3, ep 6).

For centuries, tales of terrifying monsters have fascinated mankind. Get to know the beasts that have been portrayed in some of history's classic stories. (S3, ep 23).

The Pawn Stars check out a supercharged motorcycle, a calculator from 1915 and 200-year-old buttons with possible links to George Washington.

Brandon and Lori look to cash in on their first big trip to New Orleans, while the Taylor brothers fight to win a locker loaded with hunting equipment. (S1, ep 3).

Local legend FJ sees big dollar signs in old voodoo artifacts, while Brandon and Lori unearth a rare find with a potentially priceless payout. (S1, ep 4).

Shatner meets with leading experts to ask some of the most pressing questions about human origins, the cosmos, archaeology and otherworldly beings.

Phillip J Corso claims that the US army has physical evidence of alien crafts. What secrets are to be found in the mysterious Project Aurora? (S1, ep 3).

Brandon and Lori go to war over a record producer's storage unit and unearth what could be a priceless piece of rock and roll history. (S1, ep 2).

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. (S5, ep 3).

Join antiques expert and presenter David Dickinson as more collectors try to sell their items to dealers. Will they strike a deal or take a chance at auction instead? (S9, ep 41).

Gail's hot streak comes with a target on her back, while Captain Greg faces the risks of hauling at night and Lex's issues stack up. (S1, ep 2).

Italy falls victim to one of the worst engineering disasters when the Morandi bridge suddenly collapses. (4 of 6).