When Hispanic men see their membership to the Hells Angels denied, they form their own club: the Mongols Motorcycle Club; they clash with the Hells Angels and law enforcement.

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.

Don goes deep beneath the great lakes and explores flooded caves as he searches for evidence of a mysterious, cave-dwelling society that may have been the first people to reach America.

As the team launches high-tech rockets into the mile-high zone above the Triangle, unidentified aerial phenomena suddenly appear.

In the 1950s, rival electronics companies aim to make music portable for the first time ever; what follows is a decades-long rivalry that prompts the creation of products like the Pocket Radio, Cassette Tape, Walkman and the CD.

As the team launches high-tech rockets into the mile-high zone above the Triangle, unidentified aerial phenomena suddenly appear.

The guys hope to find some great deals to sell out west in southern Ontario.

After an early setback, Big Al questions his instincts; Ed and Riley struggle to transport a sluice plant to their remote mine site; bad weather causes a roadblock for PJ and Andy.

Adam and Duane are forced to work things out on a flight to Alert, Earth's northernmost settlement.

The guys hope to find some great deals to sell out west in southern Ontario.

After an early setback, Big Al questions his instincts; Ed and Riley struggle to transport a sluice plant to their remote mine site; bad weather causes a roadblock for PJ and Andy.

Adam and Duane are forced to work things out on a flight to Alert, Earth's northernmost settlement.

Don uses brand-new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.

Steve Jobs starts a personal computer company in his parents' garage on his way to bringing computers mainstream; when he commissions the help of a software design company run by Bill Gates, it's the beginning of one of the biggest rivalries.

Veterans Rudy Reyes and Ronnie Adkins break down the evidence behind the most mysterious photos, films, and recordings in battlefield history.

Frustrated by the limitations of personal transportation, rival engineers Karl Benz and Gottlieb Daimler set out to liberate humanity from their dependence on the horse by harnessing the power of the internal combustion engine.

As the car becomes more than a curiosity, early car makers gain traction with their inventions. The outbreak of World War One catapults the industry into a new era of competition, paving the way for a new generation of engineers.

As members of the team investigate the Triangle area nearly a mile above the ranch in Brandon's helicopter, they are shadowed by an invisible entity.

Steve Jobs starts a personal computer company in his parents' garage on his way to bringing computers mainstream; when he commissions the help of a software design company run by Bill Gates, it's the beginning of one of the biggest rivalries.

Don uses brand-new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.

Veterans Rudy Reyes and Ronnie Adkins break down the evidence behind the most mysterious photos, films, and recordings in battlefield history.

Frustrated by the limitations of personal transportation, rival engineers Karl Benz and Gottlieb Daimler set out to liberate humanity from their dependence on the horse by harnessing the power of the internal combustion engine.

As the car becomes more than a curiosity, early car makers gain traction with their inventions. The outbreak of World War One catapults the industry into a new era of competition, paving the way for a new generation of engineers.

Veterans Rudy Reyes and Ronnie Adkins break down the evidence behind the most mysterious photos, films, and recordings in battlefield history.

Frustrated by the limitations of personal transportation, rival engineers Karl Benz and Gottlieb Daimler set out to liberate humanity from their dependence on the horse by harnessing the power of the internal combustion engine.

As the car becomes more than a curiosity, early car makers gain traction with their inventions. The outbreak of World War One catapults the industry into a new era of competition, paving the way for a new generation of engineers.

Don uses brand-new mapping technology to expose the dark and deadly uncharted spaces beneath American cities.

As members of the team investigate the Triangle area nearly a mile above the ranch in Brandon's helicopter, they are shadowed by an invisible entity.

Steve Jobs starts a personal computer company in his parents' garage on his way to bringing computers mainstream; when he commissions the help of a software design company run by Bill Gates, it's the beginning of one of the biggest rivalries.

As members of the team investigate the Triangle area nearly a mile above the ranch in Brandon's helicopter, they are shadowed by an invisible entity.

The guys go to a 70-mile garage sale in Prince Edward Island that has plenty of treasures and junk.

Big Al's health declines; Chris deals with a rookie mine hand; PJ and Andy face floods and breakdowns.

Joe finds out that Gord has taken a job with a rival airline; while training on the C-46, Larry makes a near fatal error.

The guys go to a 70-mile garage sale in Prince Edward Island that has plenty of treasures and junk.

Big Al's health declines; Chris deals with a rookie mine hand; PJ and Andy face floods and breakdowns.

Joe finds out that Gord has taken a job with a rival airline; while training on the C-46, Larry makes a near fatal error.

Don explores top-secret military and government tunnels.

A down-on-his-luck car salesman has the visionary idea to start the first rental car company in America, and when he joins forces with cab company owner John Hertz, they spread their revolutionary business across the country.

Dale discovers the engine from a rare 1940 Harley-Davidson WLD in a box of random parts; Steve turns a 1959 Cadillac tailfin into a custom couch; Bodie and his team restore a 1963 Ford Galaxie back to its former race code glory.

As the roaring twenties bring cars to the masses in America, Europe lags far behind, and Japan struggles to modernize. The car could be the answer to the problems of both nations - until World War II changes everything.

As America enters a golden age of car design, German and Japanese car makers struggle to recover from the devastation of World War II.

As the team returns for its third year to investigate the high strangeness of Skinwalker Ranch, it finds new evidence of a mysterious anomaly in the sky one mile above the Triangle Area that may be connected to something deep within the Mesa.

A down-on-his-luck car salesman has the visionary idea to start the first rental car company in America, and when he joins forces with cab company owner John Hertz, they spread their revolutionary business across the country.

Don explores top-secret military and government tunnels.

Dale discovers the engine from a rare 1940 Harley-Davidson WLD in a box of random parts; Steve turns a 1959 Cadillac tailfin into a custom couch; Bodie and his team restore a 1963 Ford Galaxie back to its former race code glory.

As the roaring twenties bring cars to the masses in America, Europe lags far behind, and Japan struggles to modernize. The car could be the answer to the problems of both nations - until World War II changes everything.

As America enters a golden age of car design, German and Japanese car makers struggle to recover from the devastation of World War II.

Dale discovers the engine from a rare 1940 Harley-Davidson WLD in a box of random parts; Steve turns a 1959 Cadillac tailfin into a custom couch; Bodie and his team restore a 1963 Ford Galaxie back to its former race code glory.

As the roaring twenties bring cars to the masses in America, Europe lags far behind, and Japan struggles to modernize. The car could be the answer to the problems of both nations - until World War II changes everything.

As America enters a golden age of car design, German and Japanese car makers struggle to recover from the devastation of World War II.

Don explores top-secret military and government tunnels.

As the team returns for its third year to investigate the high strangeness of Skinwalker Ranch, it finds new evidence of a mysterious anomaly in the sky one mile above the Triangle Area that may be connected to something deep within the Mesa.

A down-on-his-luck car salesman has the visionary idea to start the first rental car company in America, and when he joins forces with cab company owner John Hertz, they spread their revolutionary business across the country.

As the team returns for its third year to investigate the high strangeness of Skinwalker Ranch, it finds new evidence of a mysterious anomaly in the sky one mile above the Triangle Area that may be connected to something deep within the Mesa.

After stopping in Peggy's Cove, the guys bet to see who will find the ultimate East Coast prize.

Hiro's Curse returns for Big Al; unstable ground shuts down Chris.

Duane wins two more Electra contracts; Tyler learns landing the DC-3 takes practice.

After stopping in Peggy's Cove, the guys bet to see who will find the ultimate East Coast prize.

Hiro's Curse returns for Big Al; unstable ground shuts down Chris.

Duane wins two more Electra contracts; Tyler learns landing the DC-3 takes practice.

Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.

Two sneaker companies become industry titans through a decades long battle for global dominance, as they unleash iconic footwear that will bring sneakers mainstream and make them part of the fabric of American culture.

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.

Lauro barrels to the finish line of the Iditarod along the frozen Bering Sea coast; Mike fights to salvage his Kodiak Island homestead after a bear invasion; Chance makes a push into uncharted territory on his trapline; Jake corners a tomcat.

Extreme isolation takes its toll on the rest of the participants in the wild; each man's battle turns to the mind as well as the elements.

The team invites former members of the U.S. military connected to the infamous "Tic Tac" UAP encounter, and are stunned when they stimulate very similar phenomena to appear above Skinwalker Ranch.

Two sneaker companies become industry titans through a decades long battle for global dominance, as they unleash iconic footwear that will bring sneakers mainstream and make them part of the fabric of American culture.

Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.

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.

Lauro barrels to the finish line of the Iditarod along the frozen Bering Sea coast; Mike fights to salvage his Kodiak Island homestead after a bear invasion; Chance makes a push into uncharted territory on his trapline; Jake corners a tomcat.

Extreme isolation takes its toll on the rest of the participants in the wild; each man's battle turns to the mind as well as the elements.

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.

Lauro barrels to the finish line of the Iditarod along the frozen Bering Sea coast; Mike fights to salvage his Kodiak Island homestead after a bear invasion; Chance makes a push into uncharted territory on his trapline; Jake corners a tomcat.

Extreme isolation takes its toll on the rest of the participants in the wild; each man's battle turns to the mind as well as the elements.

Don explores the massive underground cities in the mountains of Turkey that may have been home to the first civilization on Earth.

The team invites former members of the U.S. military connected to the infamous "Tic Tac" UAP encounter, and are stunned when they stimulate very similar phenomena to appear above Skinwalker Ranch.

Two sneaker companies become industry titans through a decades long battle for global dominance, as they unleash iconic footwear that will bring sneakers mainstream and make them part of the fabric of American culture.

The team invites former members of the U.S. military connected to the infamous "Tic Tac" UAP encounter, and are stunned when they stimulate very similar phenomena to appear above Skinwalker Ranch.

Scott and Sheldon uncover nine bar tables reportedly from the tavern owned by NHL star Henri Richard.

The Pickers hunt for deals in Niagara Falls.

In the season premiere, Ted takes the plunge with his own new salvage business and hits the ground running at an abandoned wrecking yard that may be holding hidden treasures.

Scott and Sheldon uncover nine bar tables reportedly from the tavern owned by NHL star Henri Richard.

The Pickers hunt for deals in Niagara Falls.

In the season premiere, Ted takes the plunge with his own new salvage business and hits the ground running at an abandoned wrecking yard that may be holding hidden treasures.

Rick, Corey, and Chum rev up their engines and roll into Detroit; Rick suits up for some samurai armor and tries to drive down the price of a luxury car collection; the guys check out some Motown memorabilia.

The hunt for deals heats up as Rick, Corey and Chum make their way down to Mesa, Ariz.; Rick encounters a rugged Big Willy Jeep; Chum fangirls over some 2010 Justin Bieber trading cards; Corey is struck by some Napoleonic medals.

Rick, Corey and Chum head to the Wolverines' lair; Rick is struck by a Ford Thunderbird convertible; Corey uses the force to win over a Star Wars action figure collection; Chum scores a jersey signed by LaMarr Woodley.

Rick, Corey and Chum rise from the ashes and start anew in Phoenix; Rick makes a pit stop to check out some rare vintage Americana items; Chum checks out a mid-century modern furniture collection; Corey gets in the ring for some boxing memorabilia.

Rick, Corey, and Chum rev up their engines and roll into Detroit; Rick suits up for some samurai armor and tries to drive down the price of a luxury car collection; the guys check out some Motown memorabilia.

The hunt for deals heats up as Rick, Corey and Chum make their way down to Mesa, Ariz.; Rick encounters a rugged Big Willy Jeep; Chum fangirls over some 2010 Justin Bieber trading cards; Corey is struck by some Napoleonic medals.

Rick, Corey and Chum head to the Wolverines' lair; Rick is struck by a Ford Thunderbird convertible; Corey uses the force to win over a Star Wars action figure collection; Chum scores a jersey signed by LaMarr Woodley.

Rick, Corey and Chum rise from the ashes and start anew in Phoenix; Rick makes a pit stop to check out some rare vintage Americana items; Chum checks out a mid-century modern furniture collection; Corey gets in the ring for some boxing memorabilia.

Rick, Corey, and Chum rev up their engines and roll into Detroit; Rick suits up for some samurai armor and tries to drive down the price of a luxury car collection; the guys check out some Motown memorabilia.

A man changes personalities after a heart transplant; perfect circles of ice; a mother unrelated to her children.

The Army investigates paranormal activity; a boy loses his thumb; an ancient Indonesian skeleton.

An eccentric couple wants to turn a 20-year-old ambulance into a ghost-hunting vehicle; Danny is speechless over a tattooed customer's request.

Paid programming.

Gold, the shiny precious metal that has been cherished through all recorded time, is vital to the modern world; if gold was suddenly stripped away, the technological and cultural world would be left reeling.

A man changes personalities after a heart transplant; perfect circles of ice; a mother unrelated to her children.

The Army investigates paranormal activity; a boy loses his thumb; an ancient Indonesian skeleton.

Recounting the birth of Mickey Mouse, how he began as a pencil sketch and rocketed to lasting fame; the story starts with Walt in his early days in Hollywood when he quickly loses his first successful cartoon character to a powerful middleman.

Facing soaring costs, mounting criticism, and a tight deadline, Walt Disney creates the first full-length animated feature film, giving rise to the billion-dollar business of animated films.

Walt Disney overcomes obstacles to create the first theme park, where instead of thrill rides, he gives the visitor an immersive journey into a story.

Amidst financial troubles, Disney hires an ingenious marketing whiz who helps them figure out how to bring their beloved characters off the screen and into the hands of millions; Mickey becomes the first celebrity face to grace a cereal box and from that moment, the licensing of Disney products becomes a lucrative industry and the gold standard for multimedia corporations all over the world.

Against all odds, Disney turns 27,000 acres of muddy Florida swampland into the world's largest and most visited Theme Park.

For nearly 70 years, Disney has pushed the boundaries of art and science through the work of a team of dreamers, designers, and builders known as the "Imagineers"; a look at the story of these builders who have turned the impossible into a reality.

Recounting the birth of Mickey Mouse, how he began as a pencil sketch and rocketed to lasting fame; the story starts with Walt in his early days in Hollywood when he quickly loses his first successful cartoon character to a powerful middleman.

Facing soaring costs, mounting criticism, and a tight deadline, Walt Disney creates the first full-length animated feature film, giving rise to the billion-dollar business of animated films.

Walt Disney overcomes obstacles to create the first theme park, where instead of thrill rides, he gives the visitor an immersive journey into a story.

Amidst financial troubles, Disney hires an ingenious marketing whiz who helps them figure out how to bring their beloved characters off the screen and into the hands of millions; Mickey becomes the first celebrity face to grace a cereal box and from that moment, the licensing of Disney products becomes a lucrative industry and the gold standard for multimedia corporations all over the world.

Against all odds, Disney turns 27,000 acres of muddy Florida swampland into the world's largest and most visited Theme Park.

For nearly 70 years, Disney has pushed the boundaries of art and science through the work of a team of dreamers, designers, and builders known as the "Imagineers"; a look at the story of these builders who have turned the impossible into a reality.

Recounting the birth of Mickey Mouse, how he began as a pencil sketch and rocketed to lasting fame; the story starts with Walt in his early days in Hollywood when he quickly loses his first successful cartoon character to a powerful middleman.

Facing soaring costs, mounting criticism, and a tight deadline, Walt Disney creates the first full-length animated feature film, giving rise to the billion-dollar business of animated films.

Walt Disney overcomes obstacles to create the first theme park, where instead of thrill rides, he gives the visitor an immersive journey into a story.

Amidst financial troubles, Disney hires an ingenious marketing whiz who helps them figure out how to bring their beloved characters off the screen and into the hands of millions; Mickey becomes the first celebrity face to grace a cereal box and from that moment, the licensing of Disney products becomes a lucrative industry and the gold standard for multimedia corporations all over the world.

Against all odds, Disney turns 27,000 acres of muddy Florida swampland into the world's largest and most visited Theme Park.

For nearly 70 years, Disney has pushed the boundaries of art and science through the work of a team of dreamers, designers, and builders known as the "Imagineers"; a look at the story of these builders who have turned the impossible into a reality.

A window washer falls nearly 50 stories; rocks and boulders move on their own; human feet.

Chris risks his season on a new cut; Andy tries to manage the mine alone while Ed and Riley go hunting.

The completion of a major contract is in jeopardy when Duane leaves the crew to spend time at home.

A window washer falls nearly 50 stories; rocks and boulders move on their own; human feet.

Chris risks his season on a new cut; Andy tries to manage the mine alone while Ed and Riley go hunting.

The completion of a major contract is in jeopardy when Duane leaves the crew to spend time at home.

Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.

Investigators Andy Bustamante and Paul Beban investigate Bradshaw Ranch in Sedona, Ariz., and encounter dangerous radiation levels, a strange temperature anomaly, and a UAP.

Tom Delonge and Lue Elizondo help engineer the release of videos captured by U.S Navy fighter pilots of Tic Tac UFOs; the objects had no wings and were capable of seemingly impossible maneuvers.

The team puts notorious phenomenon-experiencer Chris Bledsoe to the test, from the swamps of the Florida Everglades to the controlled labs of Virginia's Monroe Institute to answer the question of how Bledsoe's unique brain is able to communicate?

After lab tests reveal stunning clues about the ceramic material, the team faces a hard decision about their investigation of the Mesa.

As the team conducts a new aerial experiment over the Triangle Area above Skinwalker Ranch, they find shocking new evidence that the radiation and UAP phenomena they keep detecting may be connected to something deep inside the mesa.

Investigators Andy Bustamante and Paul Beban investigate Bradshaw Ranch in Sedona, Ariz., and encounter dangerous radiation levels, a strange temperature anomaly, and a UAP.

Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.

Tom Delonge and Lue Elizondo help engineer the release of videos captured by U.S Navy fighter pilots of Tic Tac UFOs; the objects had no wings and were capable of seemingly impossible maneuvers.

The team puts notorious phenomenon-experiencer Chris Bledsoe to the test, from the swamps of the Florida Everglades to the controlled labs of Virginia's Monroe Institute to answer the question of how Bledsoe's unique brain is able to communicate?

After lab tests reveal stunning clues about the ceramic material, the team faces a hard decision about their investigation of the Mesa.

Tom Delonge and Lue Elizondo help engineer the release of videos captured by U.S Navy fighter pilots of Tic Tac UFOs; the objects had no wings and were capable of seemingly impossible maneuvers.

The team puts notorious phenomenon-experiencer Chris Bledsoe to the test, from the swamps of the Florida Everglades to the controlled labs of Virginia's Monroe Institute to answer the question of how Bledsoe's unique brain is able to communicate?

After lab tests reveal stunning clues about the ceramic material, the team faces a hard decision about their investigation of the Mesa.

Don follows the clues hidden underground as he searches for evidence of 10,000 Aztecs who fled Mexico and disappeared somewhere in America.

As the team conducts a new aerial experiment over the Triangle Area above Skinwalker Ranch, they find shocking new evidence that the radiation and UAP phenomena they keep detecting may be connected to something deep inside the mesa.

Investigators Andy Bustamante and Paul Beban investigate Bradshaw Ranch in Sedona, Ariz., and encounter dangerous radiation levels, a strange temperature anomaly, and a UAP.

As the team conducts a new aerial experiment over the Triangle Area above Skinwalker Ranch, they find shocking new evidence that the radiation and UAP phenomena they keep detecting may be connected to something deep inside the mesa.

A dogfight between alien aircraft and the U.S. Air Force; world's loudest sounds; a fishing trawler.

Desperate, Big Al pushes Hiro to his limit; Chris looks to salvage his season; PJ and Andy's camp experiences a mini revolt.

Jimmy is sent to a mining camp to build an ice landing strip for a DC-3 and a C-46.

A dogfight between alien aircraft and the U.S. Air Force; world's loudest sounds; a fishing trawler.

Desperate, Big Al pushes Hiro to his limit; Chris looks to salvage his season; PJ and Andy's camp experiences a mini revolt.

Jimmy is sent to a mining camp to build an ice landing strip for a DC-3 and a C-46.

Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.

Andy and Paul travel to Nevada, and investigate Mt. Wilson, a property once owned by Robert Bigelow and thought to contain mysterious tunnels that lead to a buried UFO.

When John Gotti, a capo from the Bronx, becomes fed up with the greed of his boss, Paul Castellano, he orchestrates a mob hit; rising to power as the new don of the Gambino family, Gotti's reign draws the scrutiny of the FBI.

Whitey Bulger's notoriously violent and untouchable Winter Hill Gang are the kings of Boston's underworld, until a secret alliance comes to light.

The hidden history of the White House, including the mystery of a top-secret construction project dubbed the Big Dig that took place outside of the West Wing; the search for the truth utilizes images, graphics and previously classified materials.

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.

When the team works with a group of astronomy experts to conduct a telescope and rocket experiment at the Triangle Area on Skinwalker Ranch, they have their most incredible UAP encounter yet.

Andy and Paul travel to Nevada, and investigate Mt. Wilson, a property once owned by Robert Bigelow and thought to contain mysterious tunnels that lead to a buried UFO.

Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.

When John Gotti, a capo from the Bronx, becomes fed up with the greed of his boss, Paul Castellano, he orchestrates a mob hit; rising to power as the new don of the Gambino family, Gotti's reign draws the scrutiny of the FBI.

Whitey Bulger's notoriously violent and untouchable Winter Hill Gang are the kings of Boston's underworld, until a secret alliance comes to light.

The hidden history of the White House, including the mystery of a top-secret construction project dubbed the Big Dig that took place outside of the West Wing; the search for the truth utilizes images, graphics and previously classified materials.

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.

When John Gotti, a capo from the Bronx, becomes fed up with the greed of his boss, Paul Castellano, he orchestrates a mob hit; rising to power as the new don of the Gambino family, Gotti's reign draws the scrutiny of the FBI.

Whitey Bulger's notoriously violent and untouchable Winter Hill Gang are the kings of Boston's underworld, until a secret alliance comes to light.

The hidden history of the White House, including the mystery of a top-secret construction project dubbed the Big Dig that took place outside of the West Wing; the search for the truth utilizes images, graphics and previously classified materials.

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.

Don goes deep beneath a Knights Templar stronghold in Turkey to explore a provocative theory that may link the fabled secret society to the founding fathers of America.

When the team works with a group of astronomy experts to conduct a telescope and rocket experiment at the Triangle Area on Skinwalker Ranch, they have their most incredible UAP encounter yet.

Andy and Paul travel to Nevada, and investigate Mt. Wilson, a property once owned by Robert Bigelow and thought to contain mysterious tunnels that lead to a buried UFO.

When the team works with a group of astronomy experts to conduct a telescope and rocket experiment at the Triangle Area on Skinwalker Ranch, they have their most incredible UAP encounter yet.

Sea lions disappear days before an earthquake; a mysterious medieval manuscript.

Big Al's plans are thwarted by no-show staff; PJ's wife has concerns regarding mining and their family; Ed and Riley run out of fuel.

Engine troubles force Devan to shut down an engine.

Sea lions disappear days before an earthquake; a mysterious medieval manuscript.

Big Al's plans are thwarted by no-show staff; PJ's wife has concerns regarding mining and their family; Ed and Riley run out of fuel.

Engine troubles force Devan to shut down an engine.

Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.

Andy and Paul are bringing investigator Katie Paige back to Mountain Ranch in Colorado to see if they can capture scientific evidence of the property reacting to her presence.

An American Korean War pilot is shot down and declared dead, but he could have been taken prisoner by the Soviets; a strange recording may have captured the real first woman in space; discussing the U.S. training dolphins to kill.

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.

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

Former NIDS employee and retired Army Col. John Alexander visits the ranch; after the Skinwalker team repeat an experiment that he indicates may have opened a portal, they receive a mysterious signal that appears to be an attempt to communicate.

Andy and Paul are bringing investigator Katie Paige back to Mountain Ranch in Colorado to see if they can capture scientific evidence of the property reacting to her presence.

Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.

An American Korean War pilot is shot down and declared dead, but he could have been taken prisoner by the Soviets; a strange recording may have captured the real first woman in space; discussing the U.S. training dolphins to kill.

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.

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

An American Korean War pilot is shot down and declared dead, but he could have been taken prisoner by the Soviets; a strange recording may have captured the real first woman in space; discussing the U.S. training dolphins to kill.

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.

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

Don explores newly discovered ruins and caves in Croatia as he uncovers the true story of a formidable queen who dared to defy the powerful Roman Empire.

Former NIDS employee and retired Army Col. John Alexander visits the ranch; after the Skinwalker team repeat an experiment that he indicates may have opened a portal, they receive a mysterious signal that appears to be an attempt to communicate.

Andy and Paul are bringing investigator Katie Paige back to Mountain Ranch in Colorado to see if they can capture scientific evidence of the property reacting to her presence.

Former NIDS employee and retired Army Col. John Alexander visits the ranch; after the Skinwalker team repeat an experiment that he indicates may have opened a portal, they receive a mysterious signal that appears to be an attempt to communicate.

A surfer is saved by dolphins; pets identify people about to die; a teen lifts a car.

PJ and Andy's investor gives them an ultimatum; Chris discovers something that could lead to a big payout; Ed and Riley's season may end early.

Rookie Scott gets a taste of the action when Buffalo responds to an emergency in Alberta.

A surfer is saved by dolphins; pets identify people about to die; a teen lifts a car.

PJ and Andy's investor gives them an ultimatum; Chris discovers something that could lead to a big payout; Ed and Riley's season may end early.

Rookie Scott gets a taste of the action when Buffalo responds to an emergency in Alberta.

Steve delves into the mystery of the Lost Colony of Roanoke, navigating North Carolina's dense wilderness and swampy waterways. Combining historical research with his wilderness expertise, he investigates the colonists' possible fate and survival strategies, uncovering the challenges they faced in their search for a safe haven.

Andy and Paul return to Bradshaw Ranch in Sedona, Arizona in search of a rumored secret military base, and find themselves in a situation that could jeopardize the entire Beyond Skinwalker mission.

Bodie restores a 1941 Plymouth Special Deluxe for the CEO of Carl's Jr.; Dale is in a hurry to build a bike in time for his museum's annual motorcycle raffle; Andy restores a 1952 Shuffle Bowler game that might have ties to the mafia.

For everyday heroes in law enforcement and the military, their mission to serve and protect is put to the ultimate test when they come face to face with dangerous UFOs; dramatic re-enactments of actual UFO classified files and expert interviews.

While uncovering evidence of a massive underground cave system said to exist beneath the ranch's mysterious mesa, the Skinwalker team also broadcasts a strange signal recorded on the property over the airwaves of a local radio station.

Andy and Paul return to Bradshaw Ranch in Sedona, Arizona in search of a rumored secret military base, and find themselves in a situation that could jeopardize the entire Beyond Skinwalker mission.

Steve delves into the mystery of the Lost Colony of Roanoke, navigating North Carolina's dense wilderness and swampy waterways. Combining historical research with his wilderness expertise, he investigates the colonists' possible fate and survival strategies, uncovering the challenges they faced in their search for a safe haven.

Bodie restores a 1941 Plymouth Special Deluxe for the CEO of Carl's Jr.; Dale is in a hurry to build a bike in time for his museum's annual motorcycle raffle; Andy restores a 1952 Shuffle Bowler game that might have ties to the mafia.

For everyday heroes in law enforcement and the military, their mission to serve and protect is put to the ultimate test when they come face to face with dangerous UFOs; dramatic re-enactments of actual UFO classified files and expert interviews.

Bodie restores a 1941 Plymouth Special Deluxe for the CEO of Carl's Jr.; Dale is in a hurry to build a bike in time for his museum's annual motorcycle raffle; Andy restores a 1952 Shuffle Bowler game that might have ties to the mafia.

For everyday heroes in law enforcement and the military, their mission to serve and protect is put to the ultimate test when they come face to face with dangerous UFOs; dramatic re-enactments of actual UFO classified files and expert interviews.

Steve delves into the mystery of the Lost Colony of Roanoke, navigating North Carolina's dense wilderness and swampy waterways. Combining historical research with his wilderness expertise, he investigates the colonists' possible fate and survival strategies, uncovering the challenges they faced in their search for a safe haven.

While uncovering evidence of a massive underground cave system said to exist beneath the ranch's mysterious mesa, the Skinwalker team also broadcasts a strange signal recorded on the property over the airwaves of a local radio station.

Andy and Paul return to Bradshaw Ranch in Sedona, Arizona in search of a rumored secret military base, and find themselves in a situation that could jeopardize the entire Beyond Skinwalker mission.

While uncovering evidence of a massive underground cave system said to exist beneath the ranch's mysterious mesa, the Skinwalker team also broadcasts a strange signal recorded on the property over the airwaves of a local radio station.

Rocks and boulders in Death Valley; a light show on Brown Mountain; runners in northern Mexico.

Al faces breakdowns that threaten his profit; desperate, PJ and Andy start a night shift; Ed and Riley make a final effort to prove themselves.

Joe performs stunt landings for a film crew; new employee Ryan tries to prove his worth in Hay River; a dental hygienist gets thrown into the hot seat.

Rocks and boulders in Death Valley; a light show on Brown Mountain; runners in northern Mexico.

Al faces breakdowns that threaten his profit; desperate, PJ and Andy start a night shift; Ed and Riley make a final effort to prove themselves.

Joe performs stunt landings for a film crew; new employee Ryan tries to prove his worth in Hay River; a dental hygienist gets thrown into the hot seat.

Steve ventures into the heart of the Cascade Mountain range; Steve explores D.B. Cooper through a new lens, asking how he could have survived and escaped his perilous jump into a dark and stormy November night.

Andy and Paul are in Massachusetts to investigate one of America's oldest sites of High Strangeness and discover that an ancient Native American curse could still be active.

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.

Lauro embarks on a new solo adventure with his dog team across the unforgiving Arctic wilderness; Bret and Ivy run into trouble when their traps vanish under several feet of solid ice; Chance's bold push into new trapping territory pays off big, leaving him and Soraya with a haul of marten to skin; Jake chases down the giant tom lion that gave him the slip a week earlier; Paul taps the raw power of pure skunk essence to concoct his most potent trapping lure yet.

Two men are left on Vancouver Island as the storm of the year blows in; the unrelenting elements, isolation and starvation force one to go home.

As the team drills into the solid rock mesa on Skinwalker Ranch, they discover a mysterious void containing an impenetrable object that causes one of the most dangerous and threatening happenings they've experienced so far.

Andy and Paul are in Massachusetts to investigate one of America's oldest sites of High Strangeness and discover that an ancient Native American curse could still be active.

Steve ventures into the heart of the Cascade Mountain range; Steve explores D.B. Cooper through a new lens, asking how he could have survived and escaped his perilous jump into a dark and stormy November night.