After an explosive experiment aimed at the mysterious Bubble, the team examines the incredible phenomena they have discovered on Skinwalker Ranch with a number of world renown experts and scientists.

From strange afflictions to infections that ravage populations, it's frightening to think that one of us can contract dangerous and often deadly diseases.

A brush with death is terrifying enough-but these stories take survival to the extreme; like fending off a black bear while dangling off a cliff; drifting through shark-infested waters with nothing but a pair of rubber boots to stay afloat; just when you think skydiving is the real danger-try crash-landing into a nest of thousands of angry fire ants.

For centuries, mankind has wondered what lies hidden in the depths of the Earth; for instance, the military secrets that underground bases like Area 51 and the Cheyenne Mountain Complex hold.

Deep within the recesses of the US government archives are secrets that will never see the light of day; but thanks to eyewitness encounters and devoted research many odd events are being uncovered and re-examined.

From lone operatives to agents of powerful regimes, assassins have left a trail of disruption that echoes through time; are assassins merely footnotes in history, or have they steered the destiny of civilization all along?

The personnel of the 4077th try to make a good impression on a psychiatrist when threatened with reassignment.

Daily bombing near the hospital by an inept North Korean pilot becomes the leading spectator sport at the 4077th.

The team in Bute Inlet continues to follow new leads in search of answers regarding a missing or murdered prospector, while David Muise inches closer to gold in Pitt Lake.

A hidden 1940s map reveals new clues pointing to the motherlode; the team races season-ending weather through unexplored terrain to find an X that marks the spot where Slumach possibly found his gold.

When a bear charges a group of remote researchers, a Conservation Officer deals with the potentially life-threatening situation, and Ray takes on a challenging recovery that bested two tow companies before him.

The team in Bute Inlet continues to follow new leads in search of answers regarding a missing or murdered prospector, while David Muise inches closer to gold in Pitt Lake.

A hidden 1940s map reveals new clues pointing to the motherlode; the team races season-ending weather through unexplored terrain to find an X that marks the spot where Slumach possibly found his gold.

Santa Claus is a beloved figure and face on Earth, a symbol of hope and goodwill; the story of the creative minds, brands, and major events that shaped the image of St. Nick.

The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today; each season's must-have toy sends desperate shoppers to unbelievable lengths just to buy it.

A look at the enormous prices people have paid over the last three decades to get their hands on the cherished toys they have always wanted.

Early American malls had no food court, until a cinnamon bun, a pretzel, and a panda all move in to create three of the world's most iconic food brands and transform the American Mall.

Stephen Whitman introduces Americans to chocolate candy in a sampler box; Russell Stover builds a competing company; both brands help turn chocolate from an unknown import to a boxed American staple, given as a gift of love to this day.

Jim Folger discovers a new way to bring coffee to the masses; then another famous coffee brand gets its big break at the Maxwell House Hotel in Nashville; the creation of then coffee machines that help make coffee a billion-dollar industry.

A German immigrant looks to revolutionize the American beer industry when he's handed a struggling brewery; his signature beer will go on to amass sales of over 11 billion dollars a year.

A farmhand named Jack Daniel and a distiller in Tennessee look to bring their quality bootleg whiskey out of the shadows into a larger market; a new recipe and Daniel's revolutionary branding tactics pave the way for an American whiskey.

A look at some staples of Thanksgiving dinner that weren't around until a few brands used technological advances to reinvent turkey, stuffing, cranberry sauce, pumpkin pie and more; food innovators made each part of the meal accessible.

A look at the enormous prices people have paid over the last three decades to get their hands on the cherished toys they have always wanted.

The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today; each season's must-have toy sends desperate shoppers to unbelievable lengths just to buy it.

Santa Claus is a beloved figure and face on Earth, a symbol of hope and goodwill; the story of the creative minds, brands, and major events that shaped the image of St. Nick.

Tan is left reeling when his girlfriend is kidnapped; a violent cartel leader may be behind the abduction.

When back-to-back shootings at women's clinics leave two healthcare providers dead, Hondo and the team investigate whether the shootings were politically motivated.

When two students are brutally attacked, 20-Squad contends with a possible honor killing; Hondo and Nichelle have their first parenting dispute while searching for a suitable daycare.

Tan is left reeling when his girlfriend is kidnapped; a violent cartel leader may be behind the abduction.

When back-to-back shootings at women's clinics leave two healthcare providers dead, Hondo and the team investigate whether the shootings were politically motivated.

When two students are brutally attacked, 20-Squad contends with a possible honor killing; Hondo and Nichelle have their first parenting dispute while searching for a suitable daycare.

Santa Claus is a beloved figure and face on Earth, a symbol of hope and goodwill; the story of the creative minds, brands, and major events that shaped the image of St. Nick.

The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today; each season's must-have toy sends desperate shoppers to unbelievable lengths just to buy it.

A look at the enormous prices people have paid over the last three decades to get their hands on the cherished toys they have always wanted.

In North Carolina, Mike, and Jersey dive into a mad-scientist collection of antique quackery and medical equipment; in California, Larry's barn features a multi-generational stockpile of vintage motorbikes, cars, and leather gear.

While Beat constructs a luxury fishing lodge in northern British Columbia, Bryan Jr. gives the local gun shop a much-needed facelift; Peter joins forces with his former crane operator, Nelly, to build a sandbox on steroids for her baby girl.

Bryan builds a log smoker; Beat creates a summer home; Joel converts his kids' playhouse into a mini man-cave.

Dave ropes Craig into a massive snowcat move but rising tensions threaten to upend the job; Dale races to conquer a precarious mountain road to make an important delivery; Angela fights for traction in slick winter conditions.

Historic flood waters slam the region, stranding Junior and forcing Big Donny's new hires to step up on a mountain-side tow recovery; Dale needs a helping hand to keep his fledgling business alive.

Scooter and Muskie Todd split from the convoy and blast deeper into the wilderness, where Scooter's truck vanishes into a drift left by a recent blizzard; Bill sends reinforcements as Todd and Lisa battle to complete their mission.

Do certain weapons recorded in the pages of history, like the dagger of King Tut or the Swords of Damascus, actually contain incredible power?

Forget the monsters under your bed; the real ones, from dinosaurs to mythic beasts, are out there just waiting to be unearthed.

A brush with death is terrifying enough-but these stories take survival to the extreme; like fending off a black bear while dangling off a cliff; drifting through shark-infested waters with nothing but a pair of rubber boots to stay afloat; just when you think skydiving is the real danger-try crash-landing into a nest of thousands of angry fire ants.

Tan is left reeling when his girlfriend is kidnapped; a violent cartel leader may be behind the abduction.

When back-to-back shootings at women's clinics leave two healthcare providers dead, Hondo and the team investigate whether the shootings were politically motivated.

When two students are brutally attacked, 20-Squad contends with a possible honor killing; Hondo and Nichelle have their first parenting dispute while searching for a suitable daycare.

An event outside a U.S. Air Force base near the Rendlesham Forest in England becomes an international legend, and one of history's strangest unidentified encounters; for more than 40 years, the question has endured.

Do certain weapons recorded in the pages of history, like the dagger of King Tut or the Swords of Damascus, actually contain incredible power?

Studying stories of revenge, such as the one about a man in Colorado that uses a killdozer to settle a zoning dispute or another about an emperor who pickles his wife's lover; exploring vengeance seekers who take things too far.

A brush with death is terrifying enough-but these stories take survival to the extreme; like fending off a black bear while dangling off a cliff; drifting through shark-infested waters with nothing but a pair of rubber boots to stay afloat; just when you think skydiving is the real danger-try crash-landing into a nest of thousands of angry fire ants.

Forget the monsters under your bed; the real ones, from dinosaurs to mythic beasts, are out there just waiting to be unearthed.

While investigating a potentially ancient marker stone on Oak Island, the team makes stunning new discoveries.

A brush with death is terrifying enough-but these stories take survival to the extreme; like fending off a black bear while dangling off a cliff; drifting through shark-infested waters with nothing but a pair of rubber boots to stay afloat; just when you think skydiving is the real danger-try crash-landing into a nest of thousands of angry fire ants.

An event outside a U.S. Air Force base near the Rendlesham Forest in England becomes an international legend, and one of history's strangest unidentified encounters; for more than 40 years, the question has endured.

While investigating a potentially ancient marker stone on Oak Island, the team makes stunning new discoveries.

Forget the monsters under your bed; the real ones, from dinosaurs to mythic beasts, are out there just waiting to be unearthed.

Studying stories of revenge, such as the one about a man in Colorado that uses a killdozer to settle a zoning dispute or another about an emperor who pickles his wife's lover; exploring vengeance seekers who take things too far.

Do certain weapons recorded in the pages of history, like the dagger of King Tut or the Swords of Damascus, actually contain incredible power?

An event outside a U.S. Air Force base near the Rendlesham Forest in England becomes an international legend, and one of history's strangest unidentified encounters; for more than 40 years, the question has endured.

Kevin has grand plans to use his million-dollar savings to finish incomplete projects and expand his business, but the weather and his rickety boats aren't cooperating; Sarah isn't on board with his new plan.

A visit to Avery's family farm leads to a discovery of unexpected treasures and puts Mike's veterinary skills to the test; A new member of the Rust Valley rat rod community needs help; Mike's '68 Chevelle SS comes back from the dead.

Is Slumach's gold guarded by Bigfoot? Legend hunter Randy Brisson and his archive of evidence suggests the location of Slumach's mine and the legend of the Sasquatch converge; Adam and Kru climb the high-altitude rocky spires of Tooth Pass.

Kevin has grand plans to use his million-dollar savings to finish incomplete projects and expand his business, but the weather and his rickety boats aren't cooperating; Sarah isn't on board with his new plan.

A visit to Avery's family farm leads to a discovery of unexpected treasures and puts Mike's veterinary skills to the test; A new member of the Rust Valley rat rod community needs help; Mike's '68 Chevelle SS comes back from the dead.

A traveler with a questionable past; contraband in the mail facility; officers inspect passengers at JFK; a fugitive shows up.

An inside smuggling job is revealed at JFK; a wrong turn separates friends; German tourists in Washington; a baggage exam in Detroit.

Unrequited love, death, danger, duty and tomfoolery make up a typical day in the 4077th. Guest starring Joan Van Ark.

Hawkeye and Trapper are determined to make an issue of the accidental shelling of a South Korean village by U.S. artillery.

In 1997, thousands of people across Phoenix witness a series of strange lights unlike anything they've ever seen; many think this could be one of the largest-scale UFO sightings in history, but there may be another explanation.

Giorgio Tsoukalos looks at mysterious teachers who have appeared throughout history, including a biblical patriarch, a race of fish-people and Egypt's most controversial Pharoah.

Giorgio Tsoukalos takes a look back at the top 10 reports of encounters with strange and mysterious beasts that have been investigated on "Ancient Aliens.".

Stories of god-like beings providing instruction to early humans, helping establish the first civilizations; exploring if mysterious figures who appear throughout history provide evidence that these otherworldly teachers have been here all along.

Unrequited love, death, danger, duty and tomfoolery make up a typical day in the 4077th. Guest starring Joan Van Ark.

Hawkeye and Trapper are determined to make an issue of the accidental shelling of a South Korean village by U.S. artillery.

With over 7,500 hours investigating the mystery; top D.B. Cooper expert Eric Ulis believes that he's found the true location where Cooper landed during his daring dive.

While investigating a potentially ancient marker stone on Oak Island, the team makes stunning new discoveries.

From elaborate ceremonies featuring garments strangely reminiscent of space suits to masked dancers with alien-like faces, human history is rich with traditions that seem to honor mysterious beings from the sky.

In 1997, thousands of people across Phoenix witness a series of strange lights unlike anything they've ever seen; many think this could be one of the largest-scale UFO sightings in history, but there may be another explanation.

From elaborate ceremonies featuring garments strangely reminiscent of space suits to masked dancers with alien-like faces, human history is rich with traditions that seem to honor mysterious beings from the sky.

Giorgio Tsoukalos looks at mysterious teachers who have appeared throughout history, including a biblical patriarch, a race of fish-people and Egypt's most controversial Pharoah.

Giorgio Tsoukalos takes a look back at the top 10 reports of encounters with strange and mysterious beasts that have been investigated on "Ancient Aliens.".

Stories of god-like beings providing instruction to early humans, helping establish the first civilizations; exploring if mysterious figures who appear throughout history provide evidence that these otherworldly teachers have been here all along.

Unrequited love, death, danger, duty and tomfoolery make up a typical day in the 4077th. Guest starring Joan Van Ark.

Hawkeye and Trapper are determined to make an issue of the accidental shelling of a South Korean village by U.S. artillery.

Kevin struggles with a broken processor to get his logs off the mountain before snow closes the roads; his plans to launch the Seacrest go sideways; back at the mill, Sarah has a good idea for a side business that could make them a lot of money.

Mike restores a 1969 El Camino for his son Connor to race in a high-stakes Hit to Pass competition; Rust Bros' biggest rivalry gets nasty when they realize that not everyone is playing by the rules.

A newly discovered video and an old recording of a phone conversation shine a spotlight on a 40-year-old claim that Slumach's gold was found and mined in the 1980s.

Kevin struggles with a broken processor to get his logs off the mountain before snow closes the roads; his plans to launch the Seacrest go sideways; back at the mill, Sarah has a good idea for a side business that could make them a lot of money.

Mike restores a 1969 El Camino for his son Connor to race in a high-stakes Hit to Pass competition; Rust Bros' biggest rivalry gets nasty when they realize that not everyone is playing by the rules.

An inside smuggling job is revealed at JFK; a wrong turn separates friends; German tourists in Washington; a baggage exam in Detroit.

Canines in Chicago sniff out cash; a Canadian vehicle is seedy; officers discover a traveler's alter ego; officers sift through suspicious leaves.

After three days of near-continuous duty, Hawkeye's behavior becomes wackier than usual.

A small Korean boy with minor injuries captures the hearts of all in the 4077th.

Hidden dangers once held at bay by humans erupt with force, from everyday objects ready to explode to chemical plants and locust plagues; as nature and human legacy collide, these ticking time bombs threaten to send the world up in smoke.

Most of the world's holiest places sit in plain sight, able to be seen and experienced, but there are some hidden deep underground.

England's Stonehenge and the Moai statues of Easter Island have inspired awe for centuries; marveling at their ambitious construction and at the determination of the people who built them.

For centuries, powerful artifacts have sparked wars, inspired legends and shaped empires; from divine weapons, to formidable places, to sacred relics, these are the incredible stories of the world's most mighty marvels.

After three days of near-continuous duty, Hawkeye's behavior becomes wackier than usual.

A small Korean boy with minor injuries captures the hearts of all in the 4077th.

Hidden dangers once held at bay by humans erupt with force, from everyday objects ready to explode to chemical plants and locust plagues; as nature and human legacy collide, these ticking time bombs threaten to send the world up in smoke.

From elaborate ceremonies featuring garments strangely reminiscent of space suits to masked dancers with alien-like faces, human history is rich with traditions that seem to honor mysterious beings from the sky.

Why has an Italian sighting puzzled UFO experts for decades? Did a Calgary resident record footage of a legendary Canadian lake monster? Do an ancient pair of footprints prove giants once walked the earth? How does an eight-year-old girl climb walls like Spiderman? Tony and his team of experts examine the evidence to find the truth.

From a bat swung by one of baseball's boldest pioneers, to an iconic painting hidden behind a false wall, and even a relic tied to our nation's first president, these astonishing finds prove that America's greatest treasures can turn up in the most unlikely places.

Hidden dangers once held at bay by humans erupt with force, from everyday objects ready to explode to chemical plants and locust plagues; as nature and human legacy collide, these ticking time bombs threaten to send the world up in smoke.

Why has an Italian sighting puzzled UFO experts for decades? Did a Calgary resident record footage of a legendary Canadian lake monster? Do an ancient pair of footprints prove giants once walked the earth? How does an eight-year-old girl climb walls like Spiderman? Tony and his team of experts examine the evidence to find the truth.

From a bat swung by one of baseball's boldest pioneers, to an iconic painting hidden behind a false wall, and even a relic tied to our nation's first president, these astonishing finds prove that America's greatest treasures can turn up in the most unlikely places.

Most of the world's holiest places sit in plain sight, able to be seen and experienced, but there are some hidden deep underground.

England's Stonehenge and the Moai statues of Easter Island have inspired awe for centuries; marveling at their ambitious construction and at the determination of the people who built them.

For centuries, powerful artifacts have sparked wars, inspired legends and shaped empires; from divine weapons, to formidable places, to sacred relics, these are the incredible stories of the world's most mighty marvels.

After three days of near-continuous duty, Hawkeye's behavior becomes wackier than usual.

A small Korean boy with minor injuries captures the hearts of all in the 4077th.

Things are starting to look up as Kevin repairs his broken machines and makes progress on his plan to build a breakwater and doc at Hook Bay.

Mike refuses to sell an old clunker to a pair of serious buyers and instead takes on the challenging restoration of a 1967 Mercury Cougar with a tragic past; Avery goes head to head with Mike at the local swap meet.

Adam and Kru navigate a vertical mud bog to access a remote lake perched 1000 feet high in the Pitt; Taylor and Don search the Vancouver Police archives for clues as they investigate the man responsible for Slumach's arrest and execution.

Things are starting to look up as Kevin repairs his broken machines and makes progress on his plan to build a breakwater and doc at Hook Bay.

Mike refuses to sell an old clunker to a pair of serious buyers and instead takes on the challenging restoration of a 1967 Mercury Cougar with a tragic past; Avery goes head to head with Mike at the local swap meet.

In Chicago, officers find some bad medicine; hikers get into trouble; an architect's story seems sketchy.

A traveler returns from Colombia with a lot of luggage; a pregnant passenger in Detroit; a package from India is halted; a traveler is Washington is questioned.

An enlisted man who wants to marry a Korean girl comes to Hawkeye for help.

Hot Lips and Frank challenge Henry's fitness to command by reporting the activities of the 4077th to the Army brass.

Santa Claus is a beloved figure and face on Earth, a symbol of hope and goodwill; the story of the creative minds, brands, and major events that shaped the image of St. Nick.

Postwar peace and prosperity reveals a demand for more challenging pastimes; after decades of struggle, three different innovators break the mold to release games that combine fun with an intellectual challenge: Scrabble, Clue and Yahtzee.

The Teenage Mutant Ninja Turtles high kick their way into the action figure market in the late 1980s, opening the door for a new kind of martial arts toy; their place at the top is soon challenged by a mighty morphin phenomenon.

Two chance discoveries in the 1950s turn mundane industrial materials into legendary toys; Etch A Sketch and Play-Doh will rake in billions for decades to come, but not everyone will reap the rewards.

Thanks to the industry-defining innovations of three men through the creation of games like Super Mario Brothers, The Legend of Zelda, and Pokémon, Nintendo goes from a struggling playing card company to a video game juggernaut.

In 1983, underdog company Tonka sets out to bring the transformable robot from Japan to America, but they're soon confronted by an industry giant as Hasbro has its own competing toy line.

In the 1970s, the board game industry was aimed almost entirely at children, until a literal game changer came along in Trivial Pursuit; redefining the possibilities for adult fun, it opened up a whole new genre.

As toys become increasingly complex in the early 1970s, two unconventional inventors risk their homes and careers to bring revolutionary twists to classic games; together, Uno and Connect Four unleash a wave of family-friendly games.

Santa Claus is a beloved figure and face on Earth, a symbol of hope and goodwill; the story of the creative minds, brands, and major events that shaped the image of St. Nick.

The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today; each season's must-have toy sends desperate shoppers to unbelievable lengths just to buy it.

The hundreds of trick and gag toys produced by entrepreneurs S.S. Adams and H. Fishlove that have that entertained and annoyed Americans over six decades, and how many are still being sold.

From the velocipede to the Schwinn Stingray, or even pedal cars to Power Wheels, viewers will roll their way through the history of the hottest toys on wheels and the surprising stories behind their creations.

A look at the enormous prices people have paid over the last three decades to get their hands on the cherished toys they have always wanted.

From a first-century Roman emperor who created an early version of the whoopee cushion to modern materials that emulate human body fluids, gross equals big bucks for toymakers; examining innovative toys designed to shock.

From Furbys to Pogs, the 1990s were full of unforgettable fad toys; it was a decade where old school toys like Beanies Babies went head-to-head with high-tech wonders like Tamagotchi, and parents would do anything to get their hands on them.

Thanks to the industry-defining innovations of three men through the creation of games like Super Mario Brothers, The Legend of Zelda, and Pokémon, Nintendo goes from a struggling playing card company to a video game juggernaut.

The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today; each season's must-have toy sends desperate shoppers to unbelievable lengths just to buy it.

The hundreds of trick and gag toys produced by entrepreneurs S.S. Adams and H. Fishlove that have that entertained and annoyed Americans over six decades, and how many are still being sold.

From the velocipede to the Schwinn Stingray, or even pedal cars to Power Wheels, viewers will roll their way through the history of the hottest toys on wheels and the surprising stories behind their creations.

A look at the enormous prices people have paid over the last three decades to get their hands on the cherished toys they have always wanted.

From a first-century Roman emperor who created an early version of the whoopee cushion to modern materials that emulate human body fluids, gross equals big bucks for toymakers; examining innovative toys designed to shock.

From Furbys to Pogs, the 1990s were full of unforgettable fad toys; it was a decade where old school toys like Beanies Babies went head-to-head with high-tech wonders like Tamagotchi, and parents would do anything to get their hands on them.

Santa Claus is a beloved figure and face on Earth, a symbol of hope and goodwill; the story of the creative minds, brands, and major events that shaped the image of St. Nick.

While Kevin works on his breakwater at Hook Bay, Erik gets to work on the Pipe Dream; the mill hosts a group of high school students interested in learning how the business works.

An iconic 1969 Road Runner gives Mike a run for his money and a crash course in bodywork; a client build cuts very close to home; while out on a simple errand to buy shelves, Mike manages to make a deal on something for his trusty companion, Lincoln.

Adam, Kru, Don and Kevin follow reports of missing prospector Volcanic Brown to his camp; Adam battles winter weather and his better judgement to find Brown's body; Taylor and cousin Rain Pierre uncover archival evidence linking Slumach's arrest.

While Kevin works on his breakwater at Hook Bay, Erik gets to work on the Pipe Dream; the mill hosts a group of high school students interested in learning how the business works.

An iconic 1969 Road Runner gives Mike a run for his money and a crash course in bodywork; a client build cuts very close to home; while out on a simple errand to buy shelves, Mike manages to make a deal on something for his trusty companion, Lincoln.

Officers search for a fugitive in Washington State; a cook is questioned on his way to Las Vegas; a canine flags several packages in Chicago; x-rays discover anomalies in Port Huron cargo.

An officer's expertise in body language pays off; a German rock band in Detroit; a hole in a traveler's story.

Hawkeye writes a letter to his father, telling him some of the wacky goings-on at the 4077th.

The personnel of the 4077th are besieged by a lone sniper who believes he is firing on U.S. headquarters.

There was a time when any and all cures could be sold to the public indiscriminately; diving into a world where animal skin can replace your own, where doctors give coffee enemas and a world of heroin-laced cough syrup.

The everyday products that are way more dangerous than meets the unsuspecting eye; what were the most ill-advised and risky household products?

Uncovering the downright dangerous gigs of the past, from mercury-poisoned hat makers to kids crawling through chimneys and projectionists fleeing fiery blazes.

The modern concept of extreme sports is a product of marketing, but back in the old days, the lack of rules made them truly extreme; from bone-crushing football and deadly baseball games to wild events like auto polo.

Exploding cars and blimp disasters to kids sent through the mail and doomed personal helicopters; the past is packed with travel tales and the misfires that paved the road to modern transportation.

Remember when childhood came with a side of danger? Think back to the toys and daredevil playground antics that once defined growing up; uncovering explosive science kits, high-flying kite tubes and more.

Snack on a feast of food horrors from the past; from radioactive energy drinks, to scandalous snacks made with Olestra, to the additives in your milk and bread, uncovering the things people once ate without a second thought.

There was a time when any and all cures could be sold to the public indiscriminately; diving into a world where animal skin can replace your own, where doctors give coffee enemas and a world of heroin-laced cough syrup.

The everyday products that are way more dangerous than meets the unsuspecting eye; what were the most ill-advised and risky household products?

Uncovering the downright dangerous gigs of the past, from mercury-poisoned hat makers to kids crawling through chimneys and projectionists fleeing fiery blazes.

The modern concept of extreme sports is a product of marketing, but back in the old days, the lack of rules made them truly extreme; from bone-crushing football and deadly baseball games to wild events like auto polo.

Exploding cars and blimp disasters to kids sent through the mail and doomed personal helicopters; the past is packed with travel tales and the misfires that paved the road to modern transportation.

Snack on a feast of food horrors from the past; from radioactive energy drinks, to scandalous snacks made with Olestra, to the additives in your milk and bread, uncovering the things people once ate without a second thought.

Remember when childhood came with a side of danger? Think back to the toys and daredevil playground antics that once defined growing up; uncovering explosive science kits, high-flying kite tubes and more.

There was a time when any and all cures could be sold to the public indiscriminately; diving into a world where animal skin can replace your own, where doctors give coffee enemas and a world of heroin-laced cough syrup.

The everyday products that are way more dangerous than meets the unsuspecting eye; what were the most ill-advised and risky household products?

Uncovering the downright dangerous gigs of the past, from mercury-poisoned hat makers to kids crawling through chimneys and projectionists fleeing fiery blazes.

Kevin is on a "shopping spree" getting old parts he can use to build his huge new saw at the mill, while Jake works on the Seacrest and Erik plugs away at the Pipe Dream.

Mike struggles to finish the restoration of a legendary muscle car, and trading gets chaotic when he goes up against The Great White Shark; one of Rust Valley's own heads to The Detroit Autorama with a 1964 Acadian.

From the velocipede to the Schwinn Stingray, or even pedal cars to Power Wheels, viewers will roll their way through the history of the hottest toys on wheels and the surprising stories behind their creations.

The Christmas crazes that helped transform holiday shopping into the frantic, no-holds-barred $1.1 trillion frenzy that it is today; each season's must-have toy sends desperate shoppers to unbelievable lengths just to buy it.

Kevin is on a "shopping spree" getting old parts he can use to build his huge new saw at the mill, while Jake works on the Seacrest and Erik plugs away at the Pipe Dream.

Mike struggles to finish the restoration of a legendary muscle car, and trading gets chaotic when he goes up against The Great White Shark; one of Rust Valley's own heads to The Detroit Autorama with a 1964 Acadian.

A Chicago canine unit discovers smugglers; officers enter a high-speed chase in Port Huron; a traveler triggers radiation alarms; bullets in Blaine, Washington.

In Detroit airport, a family travelling from the UK, may need to corroborate their story. Also a tip from authorities, puts officers at the Chicago International Mail facility on high alert.

Hawkeye is the only doctor left to operate when the flu hits the 4077th.

Hawkeye and Trapper battle the brass all the way to the top in their efforts to get an incubator for the unit.

In a world without humans, the deserts once tamed rise to reclaim great triumphs: from Las Vegas to Dubai's Burj Khalifa; as sand, salt, and sun dismantle cities, the wastelands quietly take back the ground borrowed.

After humanity ceases to exist, the homes we built from suburban mansions and Miami condos to rural farmhouses face a relentless siege by fire, flood, wildlife and time.

From soaring skyscrapers like One World Trade Center to impenetrable vaults like Fort Knox, humanity's strongest structures were engineered to defy disaster; but in a world without people, even the mightiest begin to crack.

In the absence of humanity, the world's cities like New York, Orlando and Rio de Janeiro are reclaimed by nature, as forests rise, animals roam free and fire and flood undo centuries of construction.

When humanity disappears, the global retail machine collapses, malls rot, shipping lanes turn explosive and ghostly grocery stores become battlefields for rodents, predators and time.

When humanity vanishes, the vast and fragile infrastructure hidden underground-from subways and pipelines to one of the big coal seams in the United States-begins to unravel.

In a world without humans, the deserts once tamed rise to reclaim great triumphs: from Las Vegas to Dubai's Burj Khalifa; as sand, salt, and sun dismantle cities, the wastelands quietly take back the ground borrowed.

After humanity ceases to exist, the homes we built from suburban mansions and Miami condos to rural farmhouses face a relentless siege by fire, flood, wildlife and time.

From soaring skyscrapers like One World Trade Center to impenetrable vaults like Fort Knox, humanity's strongest structures were engineered to defy disaster; but in a world without people, even the mightiest begin to crack.

These are the stories of history's most unusual pastimes, some fascinating, some dangerous, but each of them completely unbelievable.

In the absence of humanity, the world's cities like New York, Orlando and Rio de Janeiro are reclaimed by nature, as forests rise, animals roam free and fire and flood undo centuries of construction.

When humanity vanishes, the vast and fragile infrastructure hidden underground-from subways and pipelines to one of the big coal seams in the United States-begins to unravel.

When humanity disappears, the global retail machine collapses, malls rot, shipping lanes turn explosive and ghostly grocery stores become battlefields for rodents, predators and time.

In a world without humans, the deserts once tamed rise to reclaim great triumphs: from Las Vegas to Dubai's Burj Khalifa; as sand, salt, and sun dismantle cities, the wastelands quietly take back the ground borrowed.

After humanity ceases to exist, the homes we built from suburban mansions and Miami condos to rural farmhouses face a relentless siege by fire, flood, wildlife and time.

From soaring skyscrapers like One World Trade Center to impenetrable vaults like Fort Knox, humanity's strongest structures were engineered to defy disaster; but in a world without people, even the mightiest begin to crack.

In the absence of humanity, the world's cities like New York, Orlando and Rio de Janeiro are reclaimed by nature, as forests rise, animals roam free and fire and flood undo centuries of construction.

It's up to Adam to push forward and guide the team through the uncharted terrain of Corbold Canyon.

According to a 1980s author and historian, the Spanish have a long and hidden history of gold exploration in Pitt Lake, and Slumach found their cache.

Drivers head out one last time during the spring thaw; Steph Custance slides into trees; Todd Dewey struggles with a load on a twisty trail; Art Burke retrieves a heavy bulldozer; Reno Ward's truck dies on the ice; Lisa Kelly gets an emergency call.

On their first runs of the new season, Lisa is forced to stop when the unrelenting road knocks her engine apart; Todd attempts an ambitious bush fix to muscle his load back onto the trailer.

Lisa's truck loses all heat as temperatures plummet toward -40, forcing her to seek help from Scooter; when the two competitive drivers meet for the first time, they make a bet that changes the course of the season.

Todd returns to face an old nemesis that once defeated him and destroyed his truck, Asheweig Road; Lisa tackles the longest run of the season so far, but disaster strikes when a fire breaks out beneath her truck.

Todd hauls a massive machine as he fights his way home in a final showdown with his nemesis, the infamous Asheweig Road; Scooter calls in a local road crew after losing a battle with an angry hill on his return trip along the goat trail.

Lisa, Scooter and company driver Muskie Todd team up as a three-truck convoy to take on the notorious Asheweig Road; the trio must work together to survive a looming disaster.

The Muskie Creek convoy struggles to recover from disaster after an ice bridge collapses beneath Lisa's truck, tipping her off the road; Scooter launches an unorthodox plan to get them back on track; Todd races out of the wilderness on a deadline.

Muskie Creek operations manager Bill Danh sends a six-truck convoy, including Lisa, Scooter, and Todd, on a crucial but near-impossible mission to a remote outpost on the Hudson Bay, traveling the world's longest winter road.

Scooter and Muskie Todd split from the convoy and blast deeper into the wilderness, where Scooter's truck vanishes into a drift left by a recent blizzard; Bill sends reinforcements as Todd and Lisa battle to complete their mission.

On their first runs of the new season, Lisa is forced to stop when the unrelenting road knocks her engine apart; Todd attempts an ambitious bush fix to muscle his load back onto the trailer.

Lisa's truck loses all heat as temperatures plummet toward -40, forcing her to seek help from Scooter; when the two competitive drivers meet for the first time, they make a bet that changes the course of the season.

Todd returns to face an old nemesis that once defeated him and destroyed his truck, Asheweig Road; Lisa tackles the longest run of the season so far, but disaster strikes when a fire breaks out beneath her truck.

Todd hauls a massive machine as he fights his way home in a final showdown with his nemesis, the infamous Asheweig Road; Scooter calls in a local road crew after losing a battle with an angry hill on his return trip along the goat trail.

Lisa, Scooter and company driver Muskie Todd team up as a three-truck convoy to take on the notorious Asheweig Road; the trio must work together to survive a looming disaster.

The Muskie Creek convoy struggles to recover from disaster after an ice bridge collapses beneath Lisa's truck, tipping her off the road; Scooter launches an unorthodox plan to get them back on track; Todd races out of the wilderness on a deadline.

Muskie Creek operations manager Bill Danh sends a six-truck convoy, including Lisa, Scooter, and Todd, on a crucial but near-impossible mission to a remote outpost on the Hudson Bay, traveling the world's longest winter road.

Scooter and Muskie Todd split from the convoy and blast deeper into the wilderness, where Scooter's truck vanishes into a drift left by a recent blizzard; Bill sends reinforcements as Todd and Lisa battle to complete their mission.

A perfectly masterminded plot leads to one of the most brazen prison breaks in American history; with only a handful of clues left behind, the search for the infamous Alcatraz escapees continues to this day.

The escape from Alcatraz in 1962 forces the government into a merciless manhunt, but the three inmates are never found; the family of the escaped Anglin brothers searches for answers to its very public mystery.

A series of unexplained deaths near Chicago in 1982 starts a nationwide panic; the victims are connected by one frightening detail: cyanide-tainted capsules of Extra-Strength Tylenol; 40 years later, it remains an active FBI investigation.

Mike and Jersey trip out over an Oddfellow's Lodge in Maryland, and visit one man's combination theme park, art installation and roadside attraction.

Andre receives a game-changing request; Joel and Bryan Sr. build their first log boathouse.

Bryan builds a log smoker; Beat creates a summer home; Joel converts his kids' playhouse into a mini man-cave.

Historic flood waters slam the region, stranding Junior and forcing Big Donny's new hires to step up on a mountain-side tow recovery; Dale needs a helping hand to keep his fledgling business alive.

Dale and his five-year old son wait on the perilous shoulder of a wintery highway after their truck dies; Angela struggles to pull off a quick flip with a rare off-road vehicle.

A man is caught in the collapse of the World Trade Center; a freak rail accident slices a man in half; a hippo attacks a safari guide in Zimbabwe.

Throughout history, there have been many prophecies and figures like Liu Bowen and the Oracle of Delphi, who claimed to see the future, were essential influencers to powerful nations. But is predicting the future really something to inherit.

From priceless treasure found inside a lost city, to an ancient manuscript hidden behind a wall, explores mysterious secrets lost deep inside various unseen chambers like tunnels, caves and burial sites.

We've heard the tales of successful prison breaks, but these aren't your average escapes; from a man who frees himself all thanks to a stone fruit, to a Soviet pilot that evades capture by stealing the enemy's plane.

The escape from Alcatraz in 1962 forces the government into a merciless manhunt, but the three inmates are never found; the family of the escaped Anglin brothers searches for answers to its very public mystery.

A perfectly masterminded plot leads to one of the most brazen prison breaks in American history; with only a handful of clues left behind, the search for the infamous Alcatraz escapees continues to this day.

It's history's most famous lost city; the island kingdom that's baffled explorers for centuries; some say Atlantis is a myth, while others insist it was a very real place wiped out thousands of years ago.

Throughout history, there have been many prophecies and figures like Liu Bowen and the Oracle of Delphi, who claimed to see the future, were essential influencers to powerful nations. But is predicting the future really something to inherit.

We've heard the tales of successful prison breaks, but these aren't your average escapes; from a man who frees himself all thanks to a stone fruit, to a Soviet pilot that evades capture by stealing the enemy's plane.

These are the stories of history's most unusual pastimes, some fascinating, some dangerous, but each of them completely unbelievable.

From priceless treasure found inside a lost city, to an ancient manuscript hidden behind a wall, explores mysterious secrets lost deep inside various unseen chambers like tunnels, caves and burial sites.

After a new Bobby Dazzler is unearthed on Lot five, the Oak Island team makes a discovery with possible religious implications.

These are the stories of history's most unusual pastimes, some fascinating, some dangerous, but each of them completely unbelievable.

It's history's most famous lost city; the island kingdom that's baffled explorers for centuries; some say Atlantis is a myth, while others insist it was a very real place wiped out thousands of years ago.

After a new Bobby Dazzler is unearthed on Lot five, the Oak Island team makes a discovery with possible religious implications.

From priceless treasure found inside a lost city, to an ancient manuscript hidden behind a wall, explores mysterious secrets lost deep inside various unseen chambers like tunnels, caves and burial sites.

We've heard the tales of successful prison breaks, but these aren't your average escapes; from a man who frees himself all thanks to a stone fruit, to a Soviet pilot that evades capture by stealing the enemy's plane.

Throughout history, there have been many prophecies and figures like Liu Bowen and the Oracle of Delphi, who claimed to see the future, were essential influencers to powerful nations. But is predicting the future really something to inherit.

It's history's most famous lost city; the island kingdom that's baffled explorers for centuries; some say Atlantis is a myth, while others insist it was a very real place wiped out thousands of years ago.

With the battle for logs taking a toll, Kevin keeps pursuing his plans to build the Pipe Dream and a new saw at the mill; millhand Simon's plans for a logger sports day get wildly out of hand once Kevin steps in to help.

Mike gives Cassidy the opportunity to take charge on a restoration; Avery finds pieces of a 1942 Harley Davidson buried among Mike's junk and recruits a local motorcycle legend to help him restore it to its former glory; Mike tries to gold snipe.

In North Carolina, a maggot infested pickup crawls into the shop and rises from the dead; in Georgia, a vandalized classic Mercedes comes clean.

In Minnesota, Jeremy and his team take on their worst-smelling vehicle yet - a Mercury Cougar filled with over 15 years of cat urine; in North Carolina, a Toyota 4Runner covered in dog hair finally gets groomed.

With the battle for logs taking a toll, Kevin keeps pursuing his plans to build the Pipe Dream and a new saw at the mill; millhand Simon's plans for a logger sports day get wildly out of hand once Kevin steps in to help.

Mike gives Cassidy the opportunity to take charge on a restoration; Avery finds pieces of a 1942 Harley Davidson buried among Mike's junk and recruits a local motorcycle legend to help him restore it to its former glory; Mike tries to gold snipe.

Border officers stop a young British visitor meeting an American cyber pal at Detroit Metro Airport, and a Chinese traveller is caught using his mobile phone in a secondary inspection in Chicago.

A strong odor leads to a secondary inspection for two Americans in Port Huron; an officer finds gold at Chicago's O'Hare Airport.

The officers' weekly poker game at the 4077th is interrupted by three separate emergencies. Guest starring Noriyuki "Pat" Morita and John Ritter.

When Hot Lips decides that life is passing her by, she dumps Frank and requests a transfer.

This is the mysterious of the Dead Sea Scrolls; an ancient treasure map, recorded on a rare Copper Scroll, could lead to billions of dollars of buried treasure in gold, silver and jewels, hidden away thousands of years ago from Roman invaders.

A look at the greatest inventions of the 20th century and could they be the products of reverse engineered alien technology.

Man has always been captivated with outer space; a look at the possibility that the government has been hiding top-secret space missions involving the Moon and even Mars.

There has been a legacy of secrecy and controversy surrounding UFOs and extraterrestrials, a look at these powerful leaders and could they be hiding the truth about UFOs from the public.

The officers' weekly poker game at the 4077th is interrupted by three separate emergencies. Guest starring Noriyuki "Pat" Morita and John Ritter.

When Hot Lips decides that life is passing her by, she dumps Frank and requests a transfer.

This is the mysterious of the Dead Sea Scrolls; an ancient treasure map, recorded on a rare Copper Scroll, could lead to billions of dollars of buried treasure in gold, silver and jewels, hidden away thousands of years ago from Roman invaders.