While many believe that there is some darkness in our world, people wonder if it's something that emanates from strange locations, something that tempts humanity, or a feeling that invades.

Counting down ten of compelling - and covert - projects that study the UFO phenomenon; from clandestine government organizations to agents that silence UFO witnesses and secret programs to reverse engineer alien technology.

There are stories of advanced technology from the ancient past that seem too impossible to be true; these technologies challenge everything humanity thought about the innovation of ancestors.

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.

When an undocumented woman is violently abducted, the team forms an unlikely alliance to try and bring her home alive.

After terrorists kill a state department employee and a plastic surgeon, the team searches for the only witness who can identify the killers' surgically altered faces.

The crew at a new restoration shop takes on their first jobs restoring vintage cars, including a 1966 Lincoln Ragtop convertible and a 1970 Dodge Dart Swinger.

Mike's brother entrusts him to restore his 1964 Buick Riviera dream car; Mike restores a 1966 Beaumont Sport Deluxe; Mike hires a 17-year-old apprentice who's failed her driver's test and needs her licence to do the job.

The team battles against the elements as mass floods threaten to destroy the automotive treasures left behind by generations of commercial fisheries.

The crew at a new restoration shop takes on their first jobs restoring vintage cars, including a 1966 Lincoln Ragtop convertible and a 1970 Dodge Dart Swinger.

Mike's brother entrusts him to restore his 1964 Buick Riviera dream car; Mike restores a 1966 Beaumont Sport Deluxe; Mike hires a 17-year-old apprentice who's failed her driver's test and needs her licence to do the job.

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.

Eberhard Anheuser hires his son-in-law Adolphus Busch, and they create Budweiser beer and brew a $30 billion empire; they're part of the reason beer goes hand in hand with baseball; in the 2000s they try to make liquor.

Jack Daniel's has been making their blend since 1866, but the story of its invention is full of unexpected turns; like the secrets behind their unique recipe, how they barely survived prohibition and how Hollywood ran away with the brand's image.

Rick takes a Bricklin SV-1 out for a test drive. But is this sports car a safe bet, or a bright yellow lemon? Then, a seller makes Chum a whale-y big offer, but does he have the backbone to make the deal? Meanwhile, Corey and Chum try to stay afloat with a limited-edition Nike raft and briefcase. Will he just do it or just don't it? And finally, Rick and Chum make a long-distance song request on a Shyver Multiphone, but will the seller be singing their tune?

Flying solo, Mike heads to the California castle home of the Great Razooly a sculptor, entrepreneur, and horror icon whose one-of-a-kind collection includes monsters, gargoyles and a custom rocket ship on the front lawn.

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.

While many believe that there is some darkness in our world, people wonder if it's something that emanates from strange locations, something that tempts humanity, or a feeling that invades.

Counting down ten of compelling - and covert - projects that study the UFO phenomenon; from clandestine government organizations to agents that silence UFO witnesses and secret programs to reverse engineer alien technology.

A witch's broomstick floating in midair; UFOs using volcanoes as hidden bases of operations; fossilized footprints found in Texas; what caused gelatinous blobs of rain to fall from the sky.

The team searches for a North Korean spy while assigned to protective details for the commander of the Pacific Command.

Operational psychologist Nate Getz's loyalties come into question when he fails to make contact with Hetty while working under cover to establish a link between organized crime and terrorism.

An earthquake hits Los Angeles while the team is engaged in a standoff with human traffickers holding child hostages; Jim Street has trouble adjusting to his new life as a patrol officer.

The SWAT team tries to find a woman and her son who are running from an international drug cartel; Hondo makes a distressing discovery about his incarcerated friend's son; Luca mulls over a government program.

Deputy District Attorney Nia Wells enlists the team to protect the jurors of a high-profile bribery trial after some of them are targeted by organized crime in a series of fire-bombings.

An earthquake hits Los Angeles while the team is engaged in a standoff with human traffickers holding child hostages; Jim Street has trouble adjusting to his new life as a patrol officer.

The team searches for a North Korean spy while assigned to protective details for the commander of the Pacific Command.

Operational psychologist Nate Getz's loyalties come into question when he fails to make contact with Hetty while working under cover to establish a link between organized crime and terrorism.

Mike and Frank meet some interesting characters whose collections are even more far out and ripe for picking.

Highlights from five years of the series, including behind-the-scenes footage and recollections from the Buffalo crew.

Buffalo struggles to make its Christmas deliveries; Prefkar Mony copes with life in the North.

Thunder and lightning threaten logger Kevin Wenstob's crew as they shift into high gear on his high mountain timber claim.

Logger Kevin Wenstob gets terrible news as his crew struggles to bring the last of their 200 truckloads of logs off the mountain before winter shuts them down.

Sightings of the Yeti, a creature of myth and legend, has been recorded for thousands of years throughout the Himalayas and surrounding regions; a seven-foot-tall creature, covered in shaggy gray hair is hiding in plain sight.

Steve journeys to Oregon's remote ranches to investigate the mystery of cattle mutilations; drawing on his understanding of the natural world and a hunter's perspective, he examines who is behind these surgically precise deaths.

The team searches for a North Korean spy while assigned to protective details for the commander of the Pacific Command.

Operational psychologist Nate Getz's loyalties come into question when he fails to make contact with Hetty while working under cover to establish a link between organized crime and terrorism.

An earthquake hits Los Angeles while the team is engaged in a standoff with human traffickers holding child hostages; Jim Street has trouble adjusting to his new life as a patrol officer.

The SWAT team tries to find a woman and her son who are running from an international drug cartel; Hondo makes a distressing discovery about his incarcerated friend's son; Luca mulls over a government program.

Deputy District Attorney Nia Wells enlists the team to protect the jurors of a high-profile bribery trial after some of them are targeted by organized crime in a series of fire-bombings.

Beards as cause of death; a lawnmower killing a spectator at a football game; discussing some unusual causes of death.

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.

Steve journeys to Oregon's remote ranches to investigate the mystery of cattle mutilations; drawing on his understanding of the natural world and a hunter's perspective, he examines who is behind these surgically precise deaths.

Sightings of the Yeti, a creature of myth and legend, has been recorded for thousands of years throughout the Himalayas and surrounding regions; a seven-foot-tall creature, covered in shaggy gray hair is hiding in plain sight.

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.

Rick and Marty Lagina, two brothers from Michigan, attempt to solve the mystery of Oak Island, a tree-covered island on the south shore of Nova Scotia.

Controversy erupts when a man seeking his 15 minutes of internet fame crashes his plane into the Los Padres National Forest; the moment when three giant snakes fall out of a family's roof; two cyclists barely make it out of a tunnel.

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.

Rick and Marty Lagina, two brothers from Michigan, attempt to solve the mystery of Oak Island, a tree-covered island on the south shore of Nova Scotia.

Controversy erupts when a man seeking his 15 minutes of internet fame crashes his plane into the Los Padres National Forest; the moment when three giant snakes fall out of a family's roof; two cyclists barely make it out of a tunnel.

Beards as cause of death; a lawnmower killing a spectator at a football game; discussing some unusual causes of death.

Steve journeys to Oregon's remote ranches to investigate the mystery of cattle mutilations; drawing on his understanding of the natural world and a hunter's perspective, he examines who is behind these surgically precise deaths.

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.

The Dawson City Fire Department races to protect the town from devastating flash floods; officers track down a dangerous and destructive bison herd, have a run-in with a bear and set up a sting to catch a suspected serial over-fisher.

Dale takes on river crossings and rocky mountain roads while hauling a piano by himself to a wealthy client with sky-high expectations; the engine in Dave's brand-new hotshot truck fails, leaving him a narrow window to replace it before the deadline.

The search for Slumach's gold sends the team 300 kilometers away into the heart of mystery and murder; back in Pitt Lake, an unlikely prospector arrives with a shocking claim.

Beat creates a western-style guesthouse; Andre and Joel build an archway to rope in tourists.

Dale takes on river crossings and rocky mountain roads while hauling a piano by himself to a wealthy client with sky-high expectations; the engine in Dave's brand-new hotshot truck fails, leaving him a narrow window to replace it before the deadline.

Officers make a stunning discovery; a tourist's papers hint at her true plans for coming to Canada.

A senior has some unfriendly gear in his RV; a Canadian returning from Panama tells all.

B.J. borrows $200 from Charles to send to his wife, only to have Charles take advantage of him in various ways.

Charles' French horn practicing causes Hawkeye and B.J. to go on a bath strike.

Terrorist leaders are suspected of murdering a retired Army sergeant; Deek connects with a person of interest in the case.

When Deacon enlists Chris' help on an off-duty private security detail, they struggle to survive when they're attacked by a drug cartel looking to kidnap their wealthy VIP client.

In 1930, a New York Supreme Court justice with close ties to Tammany Hall, and future president Franklin Delano Roosevelt, steps out of a steakhouse and disappears; for decades, the case dominates mainstream media and remains unsolved.

The search for the illusive Northwest Passage leads to a historic expedition that sets sail into a labyrinth of ice and is never heard from again.

B.J. borrows $200 from Charles to send to his wife, only to have Charles take advantage of him in various ways.

Charles' French horn practicing causes Hawkeye and B.J. to go on a bath strike.

When Deacon enlists Chris' help on an off-duty private security detail, they struggle to survive when they're attacked by a drug cartel looking to kidnap their wealthy VIP client.

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.

As the team moves closer to retrieving what they believe to be the Chappell Vault, a dangerous event occurs in the Money Pit and the Fellowship must adjust their plans quickly to avoid disaster.

Pablo Escobar, the narco-trafficker who single-handedly supplied most of America's cocaine in the 1980s, had billions of dollars in cash; by the time he was gunned down in 1993, it's believed he was worth over $50 billion in today's money.

Skydivers narrowly escape two colliding planes; a father and son are in danger as they drive through a raging wildfire; what to do and what not to do when stalked by a cougar.

The search for the illusive Northwest Passage leads to a historic expedition that sets sail into a labyrinth of ice and is never heard from again.

Pablo Escobar, the narco-trafficker who single-handedly supplied most of America's cocaine in the 1980s, had billions of dollars in cash; by the time he was gunned down in 1993, it's believed he was worth over $50 billion in today's money.

Skydivers narrowly escape two colliding planes; a father and son are in danger as they drive through a raging wildfire; what to do and what not to do when stalked by a cougar.

In 1930, a New York Supreme Court justice with close ties to Tammany Hall, and future president Franklin Delano Roosevelt, steps out of a steakhouse and disappears; for decades, the case dominates mainstream media and remains unsolved.

The search for the illusive Northwest Passage leads to a historic expedition that sets sail into a labyrinth of ice and is never heard from again.

When Deacon enlists Chris' help on an off-duty private security detail, they struggle to survive when they're attacked by a drug cartel looking to kidnap their wealthy VIP client.

Terrorist leaders are suspected of murdering a retired Army sergeant; Deek connects with a person of interest in the case.

Conservation Officer Logan has a close call while investigating a case of poaching; an aggressive grizzly bear ransacks a remote trapper's cabin.

Angela and Dave need to transport a tiny home from Saskatchewan to British Columbia in time for a wedding; Dave's obsessed with a military rotator that would expand his business, but he can't afford it unless he makes a devilish deal with Big Donny.

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.

Peter and Bryan Sr. build a 50-foot log teepee; Bryan Jr. creates a bear-headed canoe out of a single log.

Angela and Dave need to transport a tiny home from Saskatchewan to British Columbia in time for a wedding; Dave's obsessed with a military rotator that would expand his business, but he can't afford it unless he makes a devilish deal with Big Donny.

An American is busted trying to catch a different kind of trip; officers help a tipsy traveler.

A heavy automobile container hints at trouble; A student's stash of food brings him discomfort.

The junkman makes a much-needed surgical clamp for the 4077th; Klinger throws out Hot Lips' wedding ring.

Klinger and Father Mulcahy risk their lives to recover stolen medical supplies from a nearby bombed-out school.

The team searches for a missing book containing top-secret information, which belonged to an antiques dealer who was murdered.

The team must locate stolen rocket launchers smuggled into Los Angeles.

Tony Harris travels to the Florida coast to investigate the legendary Bermuda beast and other mysterious sea creatures at the Bermuda Triangle; Tony and a team of experts will analyze evidence of similar bizarre sea creatures from around the world.

Journalist Tony Harris travels to the Florida coast, a hotspot for UFO sightings; Tony and a team of experts analyze compelling evidence of unidentified aerial phenomena and pass a verdict.

The junkman makes a much-needed surgical clamp for the 4077th; Klinger throws out Hot Lips' wedding ring.

Klinger and Father Mulcahy risk their lives to recover stolen medical supplies from a nearby bombed-out school.

The team must locate stolen rocket launchers smuggled into Los Angeles.

Pablo Escobar, the narco-trafficker who single-handedly supplied most of America's cocaine in the 1980s, had billions of dollars in cash; by the time he was gunned down in 1993, it's believed he was worth over $50 billion in today's money.

Skydivers narrowly escape two colliding planes; a father and son are in danger as they drive through a raging wildfire; what to do and what not to do when stalked by a cougar.

Throughout history, legendary weaponry and advanced technologies have often been attributed to divine or extraterrestrial influences. Japanese swords were believed to be forged with the help of the supernatural, while mythical weapons granted by otherworldly beings were wielded by iconic figures like Joan of Arc and King Arthur. The enigmatic Greek fire is yet another weapon attributed to these so-called-gods.

Journalist Tony Harris travels to the Florida coast, a hotspot for UFO sightings; Tony and a team of experts analyze compelling evidence of unidentified aerial phenomena and pass a verdict.

Throughout history, legendary weaponry and advanced technologies have often been attributed to divine or extraterrestrial influences. Japanese swords were believed to be forged with the help of the supernatural, while mythical weapons granted by otherworldly beings were wielded by iconic figures like Joan of Arc and King Arthur. The enigmatic Greek fire is yet another weapon attributed to these so-called-gods.

Tony Harris travels to the Florida coast to investigate the legendary Bermuda beast and other mysterious sea creatures at the Bermuda Triangle; Tony and a team of experts will analyze evidence of similar bizarre sea creatures from around the world.

Journalist Tony Harris travels to the Florida coast, a hotspot for UFO sightings; Tony and a team of experts analyze compelling evidence of unidentified aerial phenomena and pass a verdict.

The team must locate stolen rocket launchers smuggled into Los Angeles.

The team searches for a missing book containing top-secret information, which belonged to an antiques dealer who was murdered.

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.

Dave and Angela are forced to put a recovery job with his new army rotator on hold, when they get a rescue call from a dangerous mountain trail; Dale and Craig renew their bad blood while on a mission together at a remote fire watchtower.

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.

Joel builds an earthquake-proof home on Vancouver Island; meanwhile, Andre travels to Kamloops to construct a modern timber-frame home for his nephew.

Dave and Angela are forced to put a recovery job with his new army rotator on hold, when they get a rescue call from a dangerous mountain trail; Dale and Craig renew their bad blood while on a mission together at a remote fire watchtower.

A traveler returns with a surprise; Marine officers come upon an infested container.

A student is failing his customs exam; officers prevent an artifact from going down in history.

Radar borrows Charles' record player and takes over as the M*A*S*H disc jockey.

When Margaret thinks she might be pregnant, the only rabbit available for the test is Radar's pet Fluffy.

Hetty and the team continue searching for an elusive book that has the attention of foreign security agencies.

Hondo and the team race to locate the hacker responsible for accessing LAPD's computers and revealing the identities of undercover officers; Street is forced to reckon with past misdeeds.

A cab driver turned ice cream entrepreneur comes up with the idea to mix name brand candy into high-quality ice cream to create new novel flavors; after opening an ice cream shop to share his mix-in creations, his concept skyrockets.

Two entrepreneurs rise from the ashes of Prohibition by staking everything on two liquors - a bitter, bottom-shelf whisky, and a flavorless foreign moonshine - and go on to save an industry and create two of the most popular brands in the country.

Radar borrows Charles' record player and takes over as the M*A*S*H disc jockey.

When Margaret thinks she might be pregnant, the only rabbit available for the test is Radar's pet Fluffy.

Hondo and the team race to locate the hacker responsible for accessing LAPD's computers and revealing the identities of undercover officers; Street is forced to reckon with past misdeeds.

Throughout history, legendary weaponry and advanced technologies have often been attributed to divine or extraterrestrial influences. Japanese swords were believed to be forged with the help of the supernatural, while mythical weapons granted by otherworldly beings were wielded by iconic figures like Joan of Arc and King Arthur. The enigmatic Greek fire is yet another weapon attributed to these so-called-gods.

When a seller brings an "E.T." printer's proof movie poster into the shop, Chum phones his resident expert for advice; Rick and Corey take a Civil War rifle out to the range; Rick investigates a dog shaped diamond.

At a four-generation family homestead in Illinois, Mike uncovers the mother lode of saloon relics and gambles big money on a rare slot machine; in Vermont, Robbie and Jersey try to broker a deal with a Mack truck fanatic.

Two entrepreneurs rise from the ashes of Prohibition by staking everything on two liquors - a bitter, bottom-shelf whisky, and a flavorless foreign moonshine - and go on to save an industry and create two of the most popular brands in the country.

When a seller brings an "E.T." printer's proof movie poster into the shop, Chum phones his resident expert for advice; Rick and Corey take a Civil War rifle out to the range; Rick investigates a dog shaped diamond.

At a four-generation family homestead in Illinois, Mike uncovers the mother lode of saloon relics and gambles big money on a rare slot machine; in Vermont, Robbie and Jersey try to broker a deal with a Mack truck fanatic.

A cab driver turned ice cream entrepreneur comes up with the idea to mix name brand candy into high-quality ice cream to create new novel flavors; after opening an ice cream shop to share his mix-in creations, his concept skyrockets.

When a seller brings an "E.T." printer's proof movie poster into the shop, Chum phones his resident expert for advice; Rick and Corey take a Civil War rifle out to the range; Rick investigates a dog shaped diamond.

Hondo and the team race to locate the hacker responsible for accessing LAPD's computers and revealing the identities of undercover officers; Street is forced to reckon with past misdeeds.

Hetty and the team continue searching for an elusive book that has the attention of foreign security agencies.

A theoretical look at what the world would be like without Japan's innovations in medicine, science, technology and transportation.

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.

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

A fresh inside peek into some of the Timber Kings' most spectacular and unique finished homes, plus the challenges encountered while building them.

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.

The canine unit brings home the bacon; A traveler discovers she's got a friend in high places.

Joining dedicated teams of agents at Canada's airports and seaports as they intercept visitors smuggling illegal contraband and tourists with tall stories.

After a delay of five weeks, five sacks of mail finally arrive at the 4077th.

A "chest cutter" and a nurse from the 8063rd are sent to the 4077th in return for Hawkeye and Nurse Bigelow.

While investigating a deadly dispute, Kensi connects with a discharged Navy intelligence officer who has post-traumatic stress disorder.

After an armed robbery crew invades a downtown auction house, the case quickly turns personal for Hondo when his sister, Winnie, is taken as one of the hostages.

A million bats with tiny bombs strapped to their chests, inflatable tanks, robot assassins, bazooka Vespas, and war dolphins; these weapons, and others, pushed the boundaries of "possible" in the weirdest ways ever.

From clandestine nuclear weapons programs to a secret Cold War bunker hidden in the mountains, or even World War 2 technology at the bottom of the sea, we explore the unlikely people, and surprising places behind the discoveries of the most top-secret information.

After a delay of five weeks, five sacks of mail finally arrive at the 4077th.

A "chest cutter" and a nurse from the 8063rd are sent to the 4077th in return for Hawkeye and Nurse Bigelow.

After an armed robbery crew invades a downtown auction house, the case quickly turns personal for Hondo when his sister, Winnie, is taken as one of the hostages.

A million bats with tiny bombs strapped to their chests, inflatable tanks, robot assassins, bazooka Vespas, and war dolphins; these weapons, and others, pushed the boundaries of "possible" in the weirdest ways ever.

From clandestine nuclear weapons programs to a secret Cold War bunker hidden in the mountains, or even World War 2 technology at the bottom of the sea, we explore the unlikely people, and surprising places behind the discoveries of the most top-secret information.

Pickle learns to drive an airboat on the fly; Zak and Aaron go after two invasive species at once; Bruce and Kaylyn fight through skin-shredding sawgrass; Dusty tests recipes for a new Everglades culinary sensation.

Jacob and Little Willie face a frustrating day as they discover multiple poached lines, forcing them to set up a hidden camera to catch the culprit; Ronnie recruits Chase Landry to help him fill his boat with giant gators.

From clandestine nuclear weapons programs to a secret Cold War bunker hidden in the mountains, or even World War 2 technology at the bottom of the sea, we explore the unlikely people, and surprising places behind the discoveries of the most top-secret information.

Pickle learns to drive an airboat on the fly; Zak and Aaron go after two invasive species at once; Bruce and Kaylyn fight through skin-shredding sawgrass; Dusty tests recipes for a new Everglades culinary sensation.

Jacob and Little Willie face a frustrating day as they discover multiple poached lines, forcing them to set up a hidden camera to catch the culprit; Ronnie recruits Chase Landry to help him fill his boat with giant gators.

A million bats with tiny bombs strapped to their chests, inflatable tanks, robot assassins, bazooka Vespas, and war dolphins; these weapons, and others, pushed the boundaries of "possible" in the weirdest ways ever.

Pickle learns to drive an airboat on the fly; Zak and Aaron go after two invasive species at once; Bruce and Kaylyn fight through skin-shredding sawgrass; Dusty tests recipes for a new Everglades culinary sensation.

After an armed robbery crew invades a downtown auction house, the case quickly turns personal for Hondo when his sister, Winnie, is taken as one of the hostages.

While investigating a deadly dispute, Kensi connects with a discharged Navy intelligence officer who has post-traumatic stress disorder.

A theoretical look at what the world would be like without India's advances in culture, science, math and technology.

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.

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.

A theoretical look at what the world would be like without India's advances in culture, science, math and technology.

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.

A captain navigates troubled waters when he forgets to declare himself to the authorities.

An American arrives at customs with firearms; a traveler makes a breathtaking statement.

Col. Potter learns that negative reports regarding him and the 4077th have reached Seoul.

The amphetamine pill Charles takes to give him some energy has strange results.

A body containing a top-secret residue is stolen from the autopsy room, leading the team to discover an experimental Navy tracking system; Callen challenges Hetty on the rock wall.

A terminally ill inmate escapes from a hospital determined to settle old scores before he dies; Nichelle faces a life-changing event that affects her relationship with Hondo.

People go missing every day, but throughout history, there have been strange and eerie disappearances that continue to capture the world's attention.

For decades, incredible claims have been made about an extraterrestrial presence on Earth, and the government has gone to great lengths to discredit them.

Col. Potter learns that negative reports regarding him and the 4077th have reached Seoul.

The amphetamine pill Charles takes to give him some energy has strange results.

A terminally ill inmate escapes from a hospital determined to settle old scores before he dies; Nichelle faces a life-changing event that affects her relationship with Hondo.

The most compelling investigations contain shocking evidence, stunning documentation, crazy experiments, bizarre phenomena, and never-before-seen footage.

People go missing every day, but throughout history, there have been strange and eerie disappearances that continue to capture the world's attention.

Throughout human history, how the dead are treated is as important as how the living are treated, and questions of both death and the afterlife have been at the heart of every known culture.

"Ancient Aliens" is counting down ten mysterious mountains that are notorious for otherworldly phenomena; from a summit in Sri Lanka that is said to be a portal to other worlds and a volcano in Washington that was at the center of a UFO sighting.

For decades, incredible claims have been made about an extraterrestrial presence on Earth, and the government has gone to great lengths to discredit them.

Throughout human history, how the dead are treated is as important as how the living are treated, and questions of both death and the afterlife have been at the heart of every known culture.

"Ancient Aliens" is counting down ten mysterious mountains that are notorious for otherworldly phenomena; from a summit in Sri Lanka that is said to be a portal to other worlds and a volcano in Washington that was at the center of a UFO sighting.

People go missing every day, but throughout history, there have been strange and eerie disappearances that continue to capture the world's attention.

For decades, incredible claims have been made about an extraterrestrial presence on Earth, and the government has gone to great lengths to discredit them.

A terminally ill inmate escapes from a hospital determined to settle old scores before he dies; Nichelle faces a life-changing event that affects her relationship with Hondo.

A body containing a top-secret residue is stolen from the autopsy room, leading the team to discover an experimental Navy tracking system; Callen challenges Hetty on the rock wall.

Mike and the crew take on a World War II-era Power Wagon; a 1968 Chevy Chevelle becomes a nightmare job.

Mike restores a 1966 Mustang in the hope of finding a buyer with deep pockets; Connor helps his dad sell a 1968 Plymouth Satellite.

Matt's team turns west on a mission to uncover iconic pieces from Canada's black gold rush era.

Mike and the crew take on a World War II-era Power Wagon; a 1968 Chevy Chevelle becomes a nightmare job.

Mike restores a 1966 Mustang in the hope of finding a buyer with deep pockets; Connor helps his dad sell a 1968 Plymouth Satellite.

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.

Dave Thomas opens a hamburger chain, and his innovations, including a simplified menu, the perfect drive-thru system, and the reasoning behind the square hamburger, turn Wendy's into a success, but the company falters when they're victim of a hoax.

Bill Rosenberg founded Dunkin Donuts in 1950; from their battle with Krispy Kreme and Starbucks to how they invented Munchkins.

A customer walks into the shop with a camera that shot the first footage of Elvis; Chum tries to dig up some info on a mysterious fossil; Rick tries to strike black gold with a Standard Oil stock certificate.

Mike meets a passionate Connecticut picker with major inventory-but getting access to his collection means dismantling a massive, layered wall of stuff.

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.

Throughout human history, how the dead are treated is as important as how the living are treated, and questions of both death and the afterlife have been at the heart of every known culture.

"Ancient Aliens" is counting down ten mysterious mountains that are notorious for otherworldly phenomena; from a summit in Sri Lanka that is said to be a portal to other worlds and a volcano in Washington that was at the center of a UFO sighting.

Scientists study claims of a dead mermaid discovered and preserved in Japan; UFOs attracted to nuclear facilities; the glowing-eyed sea creature captured on video chasing a motorboat; a man who lived alone in the jungle.

Granger escorts Jennifer Kim to Los Angeles; while being questioned about a North Korean spy, Jennifer admits to Granger that she knows he is her father.

When secret information about suspected terrorists goes missing from a secure Department of Defense container at the site of a fire, Sam and Callen must go under cover to investigate.

Hondo suspects an ulterior motive when his romantic interest's estranged husband requests the team's help apprehending a fugitive who is robbing drug cargo shipments; Jessica is forced to implement departmental budget cuts.

Hondo and Chris try to infiltrate and take back a cruise ship that's under siege by drug smugglers; Street enters the SWAT training academy and finds the competition fiercer than expected, with all of the applicants vying one position that is open.

The team tries to determine the next diamond dealer to be robbed by thieves executing heists across downtown Los Angeles; Hondo is emotionally affected by a suspect's death; Chris contemplates an unorthodox offer from the new woman she's dating.

Hondo suspects an ulterior motive when his romantic interest's estranged husband requests the team's help apprehending a fugitive who is robbing drug cargo shipments; Jessica is forced to implement departmental budget cuts.

Hondo and Chris try to infiltrate and take back a cruise ship that's under siege by drug smugglers; Street enters the SWAT training academy and finds the competition fiercer than expected, with all of the applicants vying one position that is open.

The team tries to determine the next diamond dealer to be robbed by thieves executing heists across downtown Los Angeles; Hondo is emotionally affected by a suspect's death; Chris contemplates an unorthodox offer from the new woman she's dating.

Granger escorts Jennifer Kim to Los Angeles; while being questioned about a North Korean spy, Jennifer admits to Granger that she knows he is her father.

When secret information about suspected terrorists goes missing from a secure Department of Defense container at the site of a fire, Sam and Callen must go under cover to investigate.

Mike gets a case of bad-to-the-bone Fairlane Fever and he also goes back to the future in a DeLorean with Dani when the Pickers chase garage gold.

Buffalo's Electra aircraft gets hit with high winds; a rookie crew faces a terrible ice storm.

Engine trouble plagues Buffalo's newest plane; a standoff between Joe and Transport Canada threatens to close the airline; Joe faces a tough decision about his old dog Sophie.

Spring is here, and with just weeks to finish logging before he has to give his timber claim back, Kevin invests money he doesn't have on big plans to get the job done but when everything starts to go wrong, he's not sure he'll make his deadline.

As the clock counts down on the end of Kevin's timber claim, he pulls out all the stops and calls in favours from friends and family to get every last log off the mountainside before it's too late.

Amelia Earhart, the world's most famous female pilot, takes off on the final leg of a record-breaking flight; but Earhart never arrives at her next stop: an island in the Pacific Ocean; the search for this flier has revealed conflicting stories.

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.

Granger escorts Jennifer Kim to Los Angeles; while being questioned about a North Korean spy, Jennifer admits to Granger that she knows he is her father.

When secret information about suspected terrorists goes missing from a secure Department of Defense container at the site of a fire, Sam and Callen must go under cover to investigate.

Hondo suspects an ulterior motive when his romantic interest's estranged husband requests the team's help apprehending a fugitive who is robbing drug cargo shipments; Jessica is forced to implement departmental budget cuts.

Hondo and Chris try to infiltrate and take back a cruise ship that's under siege by drug smugglers; Street enters the SWAT training academy and finds the competition fiercer than expected, with all of the applicants vying one position that is open.

The team tries to determine the next diamond dealer to be robbed by thieves executing heists across downtown Los Angeles; Hondo is emotionally affected by a suspect's death; Chris contemplates an unorthodox offer from the new woman she's dating.

We've heard the tales of great wars fought with groundbreaking weaponry, but what about everything else in between? From missiles manned by pigeons to a helmet outfitted with firearms, to an incendiary device made to look like one of America's favorite pastimes. These are the stories of unconventional weapons, each more unbelievable than the next.

It is a legendary ancient city, said to be overflowing with gold; for centuries, explorers put their lives on the line searching for it; the quest to uncover this infamous city continues.

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.

Amelia Earhart, the world's most famous female pilot, takes off on the final leg of a record-breaking flight; but Earhart never arrives at her next stop: an island in the Pacific Ocean; the search for this flier has revealed conflicting stories.

Returning to his Michigan roots, Steve investigates the mystery of Le Griffon, the legendary lost ship of the Great Lakes that has fascinated him since childhood. Using his local knowledge and maritime expertise, he navigates shipwrecks, historical clues, and intriguing claims to piece together this 17th-century puzzle.

New pathways discovered in the swamp suggest more activity took place on the island than ever believed; after professional analysis, a gemstone uncovered on Lot 5 has the team believing that someone with great wealth was on the island.

Skydivers narrowly escape two colliding planes; a father and son are in danger as they drive through a raging wildfire; what to do and what not to do when stalked by a cougar.

Returning to his Michigan roots, Steve investigates the mystery of Le Griffon, the legendary lost ship of the Great Lakes that has fascinated him since childhood. Using his local knowledge and maritime expertise, he navigates shipwrecks, historical clues, and intriguing claims to piece together this 17th-century puzzle.

New pathways discovered in the swamp suggest more activity took place on the island than ever believed; after professional analysis, a gemstone uncovered on Lot 5 has the team believing that someone with great wealth was on the island.

Skydivers narrowly escape two colliding planes; a father and son are in danger as they drive through a raging wildfire; what to do and what not to do when stalked by a cougar.

We've heard the tales of great wars fought with groundbreaking weaponry, but what about everything else in between? From missiles manned by pigeons to a helmet outfitted with firearms, to an incendiary device made to look like one of America's favorite pastimes. These are the stories of unconventional weapons, each more unbelievable than the next.

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.

It is a legendary ancient city, said to be overflowing with gold; for centuries, explorers put their lives on the line searching for it; the quest to uncover this infamous city continues.

A theoretical look at what the world would be like without Italy's contributions to science and technology innovations and discoveries.

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.

Adam, Kru and Tony follow the path of a failed 1982 Vancouver news team led by a Slumach gold hunter and mystic dowser.

Frigid temperatures wreak havoc on Dawson City, putting the fire department in danger; an avalanche shuts down the Klondike Highway and a tow operator races to find a driver who has plunged off-road and into an icy river.

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.

An irritated traveler pushes officers to the limit; Haitian fruits may contain more than vitamins.

Officers don't believe a traveler's claims; a Canadian traveler is upset; clearance issues for a package from China.

Klinger breaks in another psycho; the last box of morphine from supply seems to be contaminated.

Hawkeye undergoes a drastic change when he becomes temporary commander of the 4077th.

The team looks for the person responsible when classified pentagon documents are uploaded to a blog site.

When the team busts a group of dangerous robbery suspects; Tan is confronted with a pivotal figure from his past; Luca is tapped to temporarily step in for Hicks.

Thousands of people swear they've encountered the legendary North American creature Bigfoot, but Bigfoot has never been officially identified; as evidence continues to mount, and photos are scrutinized, the mystery endures.

Sightings of the Yeti, a creature of myth and legend, has been recorded for thousands of years throughout the Himalayas and surrounding regions; a seven-foot-tall creature, covered in shaggy gray hair is hiding in plain sight.

Klinger breaks in another psycho; the last box of morphine from supply seems to be contaminated.

Hawkeye undergoes a drastic change when he becomes temporary commander of the 4077th.

When the team busts a group of dangerous robbery suspects; Tan is confronted with a pivotal figure from his past; Luca is tapped to temporarily step in for Hicks.

Returning to his Michigan roots, Steve investigates the mystery of Le Griffon, the legendary lost ship of the Great Lakes that has fascinated him since childhood. Using his local knowledge and maritime expertise, he navigates shipwrecks, historical clues, and intriguing claims to piece together this 17th-century puzzle.