Hondo and Hicks desperately search for Powell, who's gone missing in Mexico City along with a thermobaric bomb capable of killing thousands; Deacon's pride gets injured in a boxing match with Rocker.

From ancient religious texts buried in Egypt to cultural relics found at sea, or even a tower of skulls hiding under the earth, these lost artifacts change what is known about certain sacred beliefs.

Exploring some of the most valuable treasures found in the most unlikely of ways, like a priceless Ancient Roman mosaic hiding in a New York city apartment, or the most valuable piece of Americana tucked away in a $4 flea market find.

While cruising through Southern California on a special mission for Danielle, Mike uncovers a legendary signed guitar along with story boards and scripts from one of America's favorite cartoon family, the Simpsons.

Beat builds an Alberta man's dream home; Joel creates a walk-through tree; Peter holds a competition for Pioneer's crane ops.

Joel and his wife train for a muddy race; Beat faces torrential rain in Minnesota; Peter constructs a gazebo for his tractor.

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.

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.

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.

Whether it's called intuition, clairvoyance, or extrasensory perception, this elusive "sixth sense" defies explanation; can scientists find the secret to unlocking these remarkable gifts?

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.

From stone-throwing jungle apes, to swarms of sinister clowns stalking the suburbs, to skies raining down murderous birds, these are the strange encounters that leave the experts scratching their heads.

The team works with the DEA to stop a ruthless cartel boss waging war on the streets of Los Angeles as he exacts revenge on those who killed his son.

The team heads to Mexico to escort a fugitive back to the U.S., but things go awry and Hondo has to save an old witness tied to the case.

Hondo and Hicks desperately search for Powell, who's gone missing in Mexico City along with a thermobaric bomb capable of killing thousands; Deacon's pride gets injured in a boxing match with Rocker.

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.

Whether it's called intuition, clairvoyance, or extrasensory perception, this elusive "sixth sense" defies explanation; can scientists find the secret to unlocking these remarkable gifts?

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.

From stone-throwing jungle apes, to swarms of sinister clowns stalking the suburbs, to skies raining down murderous birds, these are the strange encounters that leave the experts scratching their heads.

Rick, Marty and the team give Matty Blake exclusive sneak peeks at new discoveries that will be revealed in Season 13.

As the Laginas and the team relaunch their search for treasure on Oak Island, a stunning revelation may help prove the Knights Templar were connected to the 230-year-old mystery.

From stone-throwing jungle apes, to swarms of sinister clowns stalking the suburbs, to skies raining down murderous birds, these are the strange encounters that leave the experts scratching their heads.

Rick, Marty and the team give Matty Blake exclusive sneak peeks at new discoveries that will be revealed in Season 13.

As the Laginas and the team relaunch their search for treasure on Oak Island, a stunning revelation may help prove the Knights Templar were connected to the 230-year-old mystery.

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.

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.

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.

Mike builds a 1964 Parisienne for a big family; Avery scores his first client of the year, building a 1975 Ford Bronco as a gift for his client's daughter.

Matt's final mission is for all thing's fast; the team hunts down muscle cars and racing legends to preserve priceless history.

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.

Mike builds a 1964 Parisienne for a big family; Avery scores his first client of the year, building a 1975 Ford Bronco as a gift for his client's daughter.

A Russian dissident's complicated past raises questions for officers; a Korean tourist's resume and school diplomas raise eyebrows.

The Inland Enforcement Unit tracks a pair of Honduran drug runners; an American tourist seems to have already put down roots in Canada.

Klinger is accused of being responsible for a rash of thefts around the camp.

Klinger, facing a court-martial, agrees to let Charles defend him.

In 1698, Capt. William Kidd raids a ship on the high seas and seizes its vast treasure, but Kidd is hanged before revealing where he stashed the loot; a look at what happened to the lost booty and where it is now.

Ancient Astronaut theorists propose that descriptions of sky gods and star beings might reflect real encounters with extraterrestrial visitors in the remote past.

The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turns the world of archaeology on its head, displaying engineering skills far beyond what the people of the time were thought to be capable of.

Klinger is accused of being responsible for a rash of thefts around the camp.

Klinger, facing a court-martial, agrees to let Charles defend him.

In 1698, Capt. William Kidd raids a ship on the high seas and seizes its vast treasure, but Kidd is hanged before revealing where he stashed the loot; a look at what happened to the lost booty and where it is now.

As the Laginas and the team relaunch their search for treasure on Oak Island, a stunning revelation may help prove the Knights Templar were connected to the 230-year-old mystery.

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.

Japan is a land rich with ancient mysteries and it has also become known as a UFO hotspot.

In 1698, Capt. William Kidd raids a ship on the high seas and seizes its vast treasure, but Kidd is hanged before revealing where he stashed the loot; a look at what happened to the lost booty and where it is now.

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.

Japan is a land rich with ancient mysteries and it has also become known as a UFO hotspot.

Ancient Astronaut theorists propose that descriptions of sky gods and star beings might reflect real encounters with extraterrestrial visitors in the remote past.

The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turns the world of archaeology on its head, displaying engineering skills far beyond what the people of the time were thought to be capable of.

Klinger is accused of being responsible for a rash of thefts around the camp.

Klinger, facing a court-martial, agrees to let Charles defend him.

Personal stories of what it was like to be a soldier during WWII; eyewitness accounts of deadly combat situations on land, sea and air.

Exploring the untold stories of the triumphs and challenges of Black Canadian and Caribbean soldiers who served in the Canadian Army at the height of Nazism during World War II, and the sacrifices made by Canadian soldiers of all backgrounds.

The great-great-granddaughter of one of Canada's first Black servicemen hunts down a missing relic; across the Prairies, a historical tailor decodes the deathbed confession of his grandfather, a World War II veteran.

A teenaged descendant of Onondaga runner Tom Longboat searches to discover the World War I veteran's story; on the West Coast, a great grandson delves into the Great War to connect with the unknown side of his family.

The descendant of a World War I nurse killed in a war crime investigates the story behind a treasured photograph; in Ontario, a young man on the cusp of enlisting in the army digs into the secret World War II history of his code-breaking great aunt.

A Japanese-Canadian survivor of World War II internment and his daughter discover their family's past; in another child-parent story, the son of Royal Canadian Airforce bomb aimer uncovers the prisoner-of-war experience his father never spoke about.

Personal stories of what it was like to be a soldier during WWII; eyewitness accounts of deadly combat situations on land, sea and air.

Exploring the untold stories of the triumphs and challenges of Black Canadian and Caribbean soldiers who served in the Canadian Army at the height of Nazism during World War II, and the sacrifices made by Canadian soldiers of all backgrounds.

The great-great-granddaughter of one of Canada's first Black servicemen hunts down a missing relic; across the Prairies, a historical tailor decodes the deathbed confession of his grandfather, a World War II veteran.

A teenaged descendant of Onondaga runner Tom Longboat searches to discover the World War I veteran's story; on the West Coast, a great grandson delves into the Great War to connect with the unknown side of his family.

After four years of unimaginable horror on the battlefield, the Allies are exhausted and in danger of losing to Germany; General John J. Pershing races to train and deploy the untested American Army before democracy collapses in Europe.

After Germany makes an all-out push to take Paris, America is forced to make hard decisions that will either break the Allies or turn the tide of war.

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.

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.

From a mythical monster that turns out to be real, to a deadly prehistoric animal, and a frozen tundra hiding a pandora's box full of lethal pathogens, these startling discoveries shock and terrify the world.

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.

After four years of unimaginable horror on the battlefield, the Allies are exhausted and in danger of losing to Germany; General John J. Pershing races to train and deploy the untested American Army before democracy collapses in Europe.

After Germany makes an all-out push to take Paris, America is forced to make hard decisions that will either break the Allies or turn the tide of war.

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.

A major setback in the final stages of restoring a 1964 Parisienne blows Mike's budget; the day of Mike's auction and the biggest financial gamble of his life arrives; Mike grapples with regret, and chaos threatens to derail the entire event.

The team tracks down several historic vehicles in the remote region of Rainy River, in Northwestern Ontario; as Steve and Lee compete with Dave, Matt and Jess hit the skies in search of a historic railway truck to assist a local museum.

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.

A major setback in the final stages of restoring a 1964 Parisienne blows Mike's budget; the day of Mike's auction and the biggest financial gamble of his life arrives; Mike grapples with regret, and chaos threatens to derail the entire event.

Trouble looms for a young Asian woman carrying someone else's bag, and a pair of Canadians return from a concert in California with more than a T-shirt.

A street performer is caught in the middle of an escape act; a cheeky bus passenger answers questions about his mischievous past.

Visiting British soldiers explain an age-old tradition about the day after Christmas when the enlisted men and officers trade places for the day.

Klinger, while ill, communicates with the spirit of a dead soldier.

An underdog breaks the mold by creating instant photography, revolutionizing how we take photos; and it kicks off a war of innovation between two iconic companies battling to be the number one camera brand in the country.

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.

Kentucky gas station owner, Harland Sanders, develops a new method for making fried chicken, drawing customers from far and wide.

A small-time St. Louis soda maker, Charles Leiper Grigg, takes on Coke and Pepsi by introducing a clear, lemon-lime soda he calls 7-Up; at the same time, two brothers in Tennessee, Ali and Barney Hartman, have their own, called Mountain Dew.

Visiting British soldiers explain an age-old tradition about the day after Christmas when the enlisted men and officers trade places for the day.

Klinger, while ill, communicates with the spirit of a dead soldier.

From a mythical monster that turns out to be real, to a deadly prehistoric animal, and a frozen tundra hiding a pandora's box full of lethal pathogens, these startling discoveries shock and terrify the world.

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.

From stone-throwing jungle apes, to swarms of sinister clowns stalking the suburbs, to skies raining down murderous birds, these are the strange encounters that leave the experts scratching their heads.

Three winning smiths return for a shot at forging their name in Forged in Fire history.

Mike and Jersey go wild for an eclectic Kentucky stockpile. And, Mike steps up with a high-flying bid for the Holy Grail of vintage motorbikes.

An underdog breaks the mold by creating instant photography, revolutionizing how we take photos; and it kicks off a war of innovation between two iconic companies battling to be the number one camera brand in the country.

Three winning smiths return for a shot at forging their name in Forged in Fire history.

Mike and Jersey go wild for an eclectic Kentucky stockpile. And, Mike steps up with a high-flying bid for the Holy Grail of vintage motorbikes.

From stone-throwing jungle apes, to swarms of sinister clowns stalking the suburbs, to skies raining down murderous birds, these are the strange encounters that leave the experts scratching their heads.

Kentucky gas station owner, Harland Sanders, develops a new method for making fried chicken, drawing customers from far and wide.

A small-time St. Louis soda maker, Charles Leiper Grigg, takes on Coke and Pepsi by introducing a clear, lemon-lime soda he calls 7-Up; at the same time, two brothers in Tennessee, Ali and Barney Hartman, have their own, called Mountain Dew.

Visiting British soldiers explain an age-old tradition about the day after Christmas when the enlisted men and officers trade places for the day.

Klinger, while ill, communicates with the spirit of a dead soldier.

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.

Mike kicks off his fifth year in business with the restoration of a rare 1971 International Scout II, before teaming up with his brothers to find a new home for their late father's 1964 Mercury motor.

Matt follows a childhood dream to track down the car owned by America's most famous mobster, Al Capone, during his alleged Canadian hideaways.

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.

Mike kicks off his fifth year in business with the restoration of a rare 1971 International Scout II, before teaming up with his brothers to find a new home for their late father's 1964 Mercury motor.

A distinctive bag has officers seeing double; a photographer misses the big picture; a heavily-modified truck causes concern.

A traveler's textbooks teach him an unexpected lesson; a tourist hits a snag instead of the slopes; officers inspect a shipment of cosmetics.

An injured pregnant cow is brought to the 4077th; Hot Lips plans a birthday trip to Tokyo.

A noted war correspondent visits the 4077th to do a story on blood donated by his readers.

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.

Rick, Marty and the team give Matty Blake exclusive sneak peeks at new discoveries that will be revealed in Season 13.

As the Laginas and the team relaunch their search for treasure on Oak Island, a stunning revelation may help prove the Knights Templar were connected to the 230-year-old mystery.

An injured pregnant cow is brought to the 4077th; Hot Lips plans a birthday trip to Tokyo.

A noted war correspondent visits the 4077th to do a story on blood donated by his readers.

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.

Three winning smiths return for a shot at forging their name in Forged in Fire history.

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.

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.

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.

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.

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.

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.

Rick, Marty and the team give Matty Blake exclusive sneak peeks at new discoveries that will be revealed in Season 13.

As the Laginas and the team relaunch their search for treasure on Oak Island, a stunning revelation may help prove the Knights Templar were connected to the 230-year-old mystery.

An injured pregnant cow is brought to the 4077th; Hot Lips plans a birthday trip to Tokyo.

A noted war correspondent visits the 4077th to do a story on blood donated by his readers.

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.

Mike burns the candle at both ends, working at remote locations for his rock scaling business, while trying to manage the shop's restoration of a 1969 Road Runner convertible from afar.

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

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.

Mike burns the candle at both ends, working at remote locations for his rock scaling business, while trying to manage the shop's restoration of a 1969 Road Runner convertible from afar.

Officers add charges to a woman's lengthy rap sheet and stumble upon a hair-raising package from Malaysia.

Officers are stumped by a backpacker carrying photos of his criminal activities; an American band gets caught in a jam.

A soldier goes AWOL and the 4077th receives fresh eggs from a grateful farmer.

It is a painful time for everyone when Winchester, suffering from a toothache, refuses to see an Army dentist.

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.

A look at what is to be learned from people who evade death, including those who can survive a plane crash in a remote jungle, nearly freeze to death in the wheel well of a trans-Atlantic flight, or are struck by lightning multiple times.

A look at the possibility of structures like the Men-an-Tol monolith or the colossal Olmec being imbued with mystical powers.

The world is full of stunning displays of natural phenomena that are so spectacular and, at times, so strange they defy conventional wisdom; examining if science can explain these mysteries.

A soldier goes AWOL and the 4077th receives fresh eggs from a grateful farmer.

It is a painful time for everyone when Winchester, suffering from a toothache, refuses to see an Army dentist.

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.

Did ocean scientists discover an unknown life form? Is blurry video of a mysterious creature in the snow the best Yeti footage out there? Did a Las Vegas family have a close encounter with ten-foot-tall aliens in their backyard?

From the eerie reports of spontaneous human combustion and the hunt for the Highgate Vampire, to the unsettling boogeymen known as the Men in Black appearing after UFO sightings, could these legends be more than just stories?

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?

Accidents happen all the time, but every so often, a few defy logic and leave the world stunned; from a man blasted by a high-pressure air hose, to a lumberjack who survived near decapitation, they border on the impossible.

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.

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?

Accidents happen all the time, but every so often, a few defy logic and leave the world stunned; from a man blasted by a high-pressure air hose, to a lumberjack who survived near decapitation, they border on the impossible.

A look at what is to be learned from people who evade death, including those who can survive a plane crash in a remote jungle, nearly freeze to death in the wheel well of a trans-Atlantic flight, or are struck by lightning multiple times.

A look at the possibility of structures like the Men-an-Tol monolith or the colossal Olmec being imbued with mystical powers.

The world is full of stunning displays of natural phenomena that are so spectacular and, at times, so strange they defy conventional wisdom; examining if science can explain these mysteries.

A soldier goes AWOL and the 4077th receives fresh eggs from a grateful farmer.

It is a painful time for everyone when Winchester, suffering from a toothache, refuses to see an Army dentist.

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.

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.

As winter tightens its icy grip, the small, isolated community of West Dawson finds itself completely cut off from emergency services. Alone, Ray faces a string of dangerous solo vehicle retrieval missions on a storm-battered highway.

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.

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.

"Ancient Aliens" is counting down the world's top 10 mysterious islands, including sites said to be home to giants, remote landmasses that are home to massive megalithic structures, and even islands that disappear into thin air.

An argument for the Ancient Astronaut theory is the engineering evident in the construction of ancient megalithic sites worldwide; colossal stones, precise cuts, and fitted blocks at many of these sites hint at the prospect of advanced technology.

Counting down ten unexplainable technologies in history, from mysterious golden orbs discovered in Mexico and a sacred wooden box that could communicate with the heavens to an ancient tomb that is said to depict an astronaut.

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.

Volcanoes have inspired countless myths and legends, but curiously, they are also major hotspots for UFO sightings; is it possible that these geological formations, which can generate great energy, are attracting otherworldly visitors?

"Ancient Aliens" is counting down the world's top 10 mysterious islands, including sites said to be home to giants, remote landmasses that are home to massive megalithic structures, and even islands that disappear into thin air.

Rick, Marty and the team give Matty Blake exclusive sneak peeks at new discoveries that will be revealed in Season 13.

As the Laginas and the team relaunch their search for treasure on Oak Island, a stunning revelation may help prove the Knights Templar were connected to the 230-year-old mystery.

The squad leaps into action when Yakuza assassins descend on L.A., targeting a number of mysterious Japanese ex-pats; Nichelle finds her job on the line when a colleague accuses her of taking bribes.

A Chilean arms dealer kidnaps a woman and her daughter; crossing paths with his brother, Tan is forced to come clean to his family about his divorce from Bonnie; Hondo discovers that Hicks has received a job offer that could lure him away.

Street discovers a biker club has stolen a cache of armor-piercing bullets and they intend to pull off a daring and deadly heist; Hondo struggles with changes at work; Nichelle finds herself at odds with a former colleague.

The squad leaps into action when Yakuza assassins descend on L.A., targeting a number of mysterious Japanese ex-pats; Nichelle finds her job on the line when a colleague accuses her of taking bribes.

A Chilean arms dealer kidnaps a woman and her daughter; crossing paths with his brother, Tan is forced to come clean to his family about his divorce from Bonnie; Hondo discovers that Hicks has received a job offer that could lure him away.

Street discovers a biker club has stolen a cache of armor-piercing bullets and they intend to pull off a daring and deadly heist; Hondo struggles with changes at work; Nichelle finds herself at odds with a former colleague.

Volcanoes have inspired countless myths and legends, but curiously, they are also major hotspots for UFO sightings; is it possible that these geological formations, which can generate great energy, are attracting otherworldly visitors?

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.

On the hunt for a delectable Porsche, Mike speed-picks in South Carolina while Rob and Jersey visit a motel-size collection of petroliana.

Peter builds a home to replace one that burned down; Andre transforms a hospital waiting room; Bryan Jr. renovates a local pub.

Bryan Jr. creates a driftwood bar for an outdoor kitchen; Peter builds a vacation home with his son.

The Seacrest finally hits the water, but the building of the Pipe Dream requires all hands on deck; a guitar maker comes to Kevin in search of unique wood; Sarah goes on a mission to find a dress for Jack's wedding.

Tempers flare as Kevin and his team finalize building the Pipe Dream and finally get the boat out on the water; with the snow finally gone, the crew heads back up the mountain to yard wood; Kevin has a special surprise for Jack and Rachel's wedding.

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.

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?

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.

Accidents happen all the time, but every so often, a few defy logic and leave the world stunned; from a man blasted by a high-pressure air hose, to a lumberjack who survived near decapitation, they border on the impossible.

The squad leaps into action when Yakuza assassins descend on L.A., targeting a number of mysterious Japanese ex-pats; Nichelle finds her job on the line when a colleague accuses her of taking bribes.

A Chilean arms dealer kidnaps a woman and her daughter; crossing paths with his brother, Tan is forced to come clean to his family about his divorce from Bonnie; Hondo discovers that Hicks has received a job offer that could lure him away.

Street discovers a biker club has stolen a cache of armor-piercing bullets and they intend to pull off a daring and deadly heist; Hondo struggles with changes at work; Nichelle finds herself at odds with a former colleague.

The Valentine's Day Massacre, a shocking event in Chicago's history, occured on February 14th, 1929; it's an unsolved mystery.

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?

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.

Accidents happen all the time, but every so often, a few defy logic and leave the world stunned; from a man blasted by a high-pressure air hose, to a lumberjack who survived near decapitation, they border on the impossible.

While drilling in the Mesa on Skinwalker Ranch, the team makes a discovery that could literally be out of this world.

After the team makes an ancient discovery on Lot 5, they learn that the fabled treasure could be worth more than anyone imagined.

Matty Blake asks the team hard questions about the newest discovery they've made on Skinwalker Ranch.

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.

While drilling in the Mesa on Skinwalker Ranch, the team makes a discovery that could literally be out of this world.

Matty Blake asks the team hard questions about the newest discovery they've made on Skinwalker Ranch.

After the team makes an ancient discovery on Lot 5, they learn that the fabled treasure could be worth more than anyone imagined.

Accidents happen all the time, but every so often, a few defy logic and leave the world stunned; from a man blasted by a high-pressure air hose, to a lumberjack who survived near decapitation, they border on the impossible.

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 Valentine's Day Massacre, a shocking event in Chicago's history, occured on February 14th, 1929; it's an unsolved mystery.

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.

Mike enlists his buddy Dave to help him rid the Field of Dreams of a junk-stuffed school bus; Richard revives the luxury of private rail cars using an old trailer; Russell leans on an old friend to help him build a truck.

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

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.

Mike enlists his buddy Dave to help him rid the Field of Dreams of a junk-stuffed school bus; Richard revives the luxury of private rail cars using an old trailer; Russell leans on an old friend to help him build a truck.

Staff confront an American soldier running scared; a British woman causes confusion with her bag of tricks.

Hidden compartments in a traveler's backpack raise red flags; the discovery of a deadly weapon leaves mail center workers stunned.

Psychiatrist Dr. Sidney Freedman visits the 4077th when Col. Potter loses all confidence in himself as a physician.

While under intense enemy shelling in a combat zone, Hawkeye decides it is time to make out his will.

The ancient ruler who amassed a fortune estimated to be worth 120 trillion in today's dollars; Genghis Khan hide his riches so well that to this day no one has unearthed them; 800 years later the fate of his treasure remains a mystery.

Across cultures and throughout history, stories of individuals receiving wisdom from otherworldly sources are widespread.

The towering obelisks of ancient Egypt weigh hundreds of tons; while mainstream scholars identify them as monuments to the pharaohs, ancient astronaut theorists suggest they may have served a technological purpose.

Psychiatrist Dr. Sidney Freedman visits the 4077th when Col. Potter loses all confidence in himself as a physician.

While under intense enemy shelling in a combat zone, Hawkeye decides it is time to make out his will.

The ancient ruler who amassed a fortune estimated to be worth 120 trillion in today's dollars; Genghis Khan hide his riches so well that to this day no one has unearthed them; 800 years later the fate of his treasure remains a mystery.

While drilling in the Mesa on Skinwalker Ranch, the team makes a discovery that could literally be out of this world.

After the team makes an ancient discovery on Lot 5, they learn that the fabled treasure could be worth more than anyone imagined.

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.

Texts, archaeology and legend contain evidence of past human-extraterrestrial contact.

The ancient ruler who amassed a fortune estimated to be worth 120 trillion in today's dollars; Genghis Khan hide his riches so well that to this day no one has unearthed them; 800 years later the fate of his treasure remains a mystery.

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.

Texts, archaeology and legend contain evidence of past human-extraterrestrial contact.

Across cultures and throughout history, stories of individuals receiving wisdom from otherworldly sources are widespread.

The towering obelisks of ancient Egypt weigh hundreds of tons; while mainstream scholars identify them as monuments to the pharaohs, ancient astronaut theorists suggest they may have served a technological purpose.

Psychiatrist Dr. Sidney Freedman visits the 4077th when Col. Potter loses all confidence in himself as a physician.

While under intense enemy shelling in a combat zone, Hawkeye decides it is time to make out his will.

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.

Mike takes on a rare Hertz Shelby Mustang for his friend's brother, but the badly damaged car might be too far-gone; a drag race against another local shop turns into a Chevelle showdown.

The car hunters race to save historic vehicles before a mobile crusher moves in to destroy them.

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.

Mike takes on a rare Hertz Shelby Mustang for his friend's brother, but the badly damaged car might be too far-gone; a drag race against another local shop turns into a Chevelle showdown.

Officers look for a message in a bottle; a lack of papers land a group of LA rappers in the doghouse; a young man receives a wake-up call.

An accidental detour leads two Canadians to a dead-end; an ornate frame holds more than just a picture; a man is suspected of money laundering.

The surgeons suffer a barrage of preferential treatment from the enlisted personnel when they are placed on the camp's promotion board.

A heavyweight boxing champion pays a goodwill visit to the 4077th.

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.

From the legendary blades of ancient kings to a divine arsenal said to annihilate monsters, history is filled with tales of iconic sacred weapons. In this episode, we delve into how they were crafted, who dared to wield them, and the epic battles that forged their place in myth.

Relics from the crucifixion of Jesus Christ have fascinated the faithful for 2000 years, from the wooden cross and iron nails, to the crown of thorns and Spear of Destiny; analyzing if these sacred artifacts still exist and where are they.

Since the dawn of humanity, rituals have marked our passage from life to death; from the burials of biblical heroes, to an Egyptian guide to the afterlife, to prehistoric mummification and fiery funerals.

The surgeons suffer a barrage of preferential treatment from the enlisted personnel when they are placed on the camp's promotion board.

A heavyweight boxing champion pays a goodwill visit to the 4077th.

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.