The team searches for a group of extremists carrying out coordinated attacks against local businesses; Deacon and his wife find themselves at odds when she wants to enroll their daughter in private school.

Chris brings the team into her personal mission to save a teenage girl from a predatory religious leader; Hondo receives troubling news about Darryl; Tan's wedding planning hits a snag.

A sniper targets the Los Angeles Fire Department; the rivalry between Chris, Street and Tan ratchets up; Street and Molly's relationship is strained by his complicated history with his imprisoned mother.

The team searches for a group of extremists carrying out coordinated attacks against local businesses; Deacon and his wife find themselves at odds when she wants to enroll their daughter in private school.

When the daughter of a notorious counterfeiter arrives in Los Angeles, Sam goes under cover as a financier; Callen partners with Anna to track the family's latest scheme.

During the murder investigation of a Navy Lieutenant on leave in Los Angeles, the team uncovers classified surveillance briefs she smuggled into the city that may have been sold to a foreign buyer.

In Louisiana, a seasoned collector and his grandson open the doors to a pool hall-turned-catch-all where Mike uncovers an ultra-rare pinball machine; in Mississippi, Robbie and Jersey scour an epic property with tons of outbuildings.

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

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

As Kevin's log salvaging operation struggles, he pins his hopes on getting back up to his mountain timber claim; a long-time mill hand quits, leaving big shoes to fill.

Finally back up on the mountain, Kevin hauls as much red cedar as he can; Sarah helps with a massive reforestation effort and gets Kevin to create a custom wooden table for a client in California.

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

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

When the daughter of a notorious counterfeiter arrives in Los Angeles, Sam goes under cover as a financier; Callen partners with Anna to track the family's latest scheme.

During the murder investigation of a Navy Lieutenant on leave in Los Angeles, the team uncovers classified surveillance briefs she smuggled into the city that may have been sold to a foreign buyer.

Chris brings the team into her personal mission to save a teenage girl from a predatory religious leader; Hondo receives troubling news about Darryl; Tan's wedding planning hits a snag.

A sniper targets the Los Angeles Fire Department; the rivalry between Chris, Street and Tan ratchets up; Street and Molly's relationship is strained by his complicated history with his imprisoned mother.

The team searches for a group of extremists carrying out coordinated attacks against local businesses; Deacon and his wife find themselves at odds when she wants to enroll their daughter in private school.

A city where the commute requires a zipline; a town crawling with monkeys; a waterfall of blood.

Archaeologists have spent centuries searching for the legendary locations of holy births, deaths, miracles and wars; we explore the stories behind these lost sacred sites and the incredible endeavors to find them.

When Civil War veteran Col. Henry Carrington takes command of Fort Phil Kearny in Northern Wyoming, he never expects to face such a ferocious enemy as Red Cloud's band of Lakota Sioux.

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.

Petty thief Rene Belbenoit is captured and sentenced to hard time at France's notorious penal colony in French Guiana; he is determined to escape or die trying, and his story becomes the basis of several popular movies in Hollywood.

A city where the commute requires a zipline; a town crawling with monkeys; a waterfall of blood.

Archaeologists have spent centuries searching for the legendary locations of holy births, deaths, miracles and wars; we explore the stories behind these lost sacred sites and the incredible endeavors to find them.

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.

Petty thief Rene Belbenoit is captured and sentenced to hard time at France's notorious penal colony in French Guiana; he is determined to escape or die trying, and his story becomes the basis of several popular movies in Hollywood.

A city where the commute requires a zipline; a town crawling with monkeys; a waterfall of blood.

Archaeologists have spent centuries searching for the legendary locations of holy births, deaths, miracles and wars; we explore the stories behind these lost sacred sites and the incredible endeavors to find them.

When Civil War veteran Col. Henry Carrington takes command of Fort Phil Kearny in Northern Wyoming, he never expects to face such a ferocious enemy as Red Cloud's band of Lakota Sioux.

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.

Stories from London's National Maritime Museum include the shooting of Admiral Horatio Nelson, the capture of pirates, Captain Bligh's commandeering of a lifeboat and lightning strikes at sea.

Big Donny keeps a watchful eye on Junior during a peat bog recovery that threatens to swallow up their fleet of tow trucks; Dave brings Angela on a tough job that could finally get him into the black.

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

Jess steps up and leads the final mission, but a rough landing may leave them stranded with an empty trailer.

Big Donny keeps a watchful eye on Junior during a peat bog recovery that threatens to swallow up their fleet of tow trucks; Dave brings Angela on a tough job that could finally get him into the black.

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

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

A general rewards the 4077th with an officers club after Hawkeye and Trapper save his son's life.

While on leave in Tokyo, Henry becomes infatuated with a younger woman fresh from the United States.

When Civil War veteran Col. Henry Carrington takes command of Fort Phil Kearny in Northern Wyoming, he never expects to face such a ferocious enemy as Red Cloud's band of Lakota Sioux.

Jess steps up and leads the final mission, but a rough landing may leave them stranded with an empty trailer.

Big Donny keeps a watchful eye on Junior during a peat bog recovery that threatens to swallow up their fleet of tow trucks; Dave brings Angela on a tough job that could finally get him into the black.

Missionaries Marcus and Narcissa Whitman seek to bring their way of life to the local Cayuse people; their struggle to adapt heightens fears and tensions both with the Cayuse, and each other, setting up a tragic encounter with historic consequences.

A general rewards the 4077th with an officers club after Hawkeye and Trapper save his son's life.

While on leave in Tokyo, Henry becomes infatuated with a younger woman fresh from the United States.

In California, Mexican immigrant Joaquin Murrieta forms a gang of outlaws that spreads terror across the state; a posse of California Rangers, led by Harry Love, takes Murrieta down - but his legend as a hero to the downtrodden lives on to this day.

When Kansas becomes a battleground in the national debate over slavery, settlers on both sides of the issue pour into the territory to determine its future as a free or slave state in its eventual admission to the Union.

When Civil War veteran Col. Henry Carrington takes command of Fort Phil Kearny in Northern Wyoming, he never expects to face such a ferocious enemy as Red Cloud's band of Lakota Sioux.

In northern Wyoming's Powder River Valley, a group of ranchers band together to protect their rights to graze cattle; a powerful cabal of cattle barons smear the ranchers as common thieves and plot an invasion.

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

When Civil War veteran Col. Henry Carrington takes command of Fort Phil Kearny in Northern Wyoming, he never expects to face such a ferocious enemy as Red Cloud's band of Lakota Sioux.

In northern Wyoming's Powder River Valley, a group of ranchers band together to protect their rights to graze cattle; a powerful cabal of cattle barons smear the ranchers as common thieves and plot an invasion.

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

In California, Mexican immigrant Joaquin Murrieta forms a gang of outlaws that spreads terror across the state; a posse of California Rangers, led by Harry Love, takes Murrieta down - but his legend as a hero to the downtrodden lives on to this day.

When Kansas becomes a battleground in the national debate over slavery, settlers on both sides of the issue pour into the territory to determine its future as a free or slave state in its eventual admission to the Union.

In northern Wyoming's Powder River Valley, a group of ranchers band together to protect their rights to graze cattle; a powerful cabal of cattle barons smear the ranchers as common thieves and plot an invasion.

A general rewards the 4077th with an officers club after Hawkeye and Trapper save his son's life.

While on leave in Tokyo, Henry becomes infatuated with a younger woman fresh from the United States.

Descendants of the Black Loyalists, Jamaican Maroons, and the Black Refugees represent Canada's largest Black population, and their incredible story begins in Nova Scotia in the 1700s.

An in-depth look at the relationship between Indigenous people and settlers, offering an important lens into Indigenous history on the land that is now Canada, including Turtle Island's creation story and the important role women play in society.

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

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

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

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

Dale has to confront his past in a desperate attempt to keep his failing business alive; Dave has a meltdown stranded on a back road with a heavy load; Craig gets greasy on a biodiesel run with his girlfriend's truck.

Dave and Tristan fight an antique wood boiler and each other leading to a showdown between father and son; Craig gets muddy on a radio antenna delivery job that leaves its mark; Dale goes on a family trip to help cut a deal for his dad.

Dale and his sister retrieve a crashed ATV; Dave slings propane across a river.

Big Donny keeps a watchful eye on Junior during a peat bog recovery that threatens to swallow up their fleet of tow trucks; Dave brings Angela on a tough job that could finally get him into the black.

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.

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.

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.

JF begins restoring a 1928 Model A Roadster, while Avery takes on a 1941 military vehicle and these antique machines are full of challenges; Mike chases redemption at the races.

Mike and Avery try to get an auctioneer to help them downsize their collections, but Avery scares him off; frame issues leave Mike's restoration of a Diamond T truck dead in the water.

With his car auction fast approaching, Mike strategizes how to draw a bigger crowd; James West takes on his most challenging build yet - turning a 1955 Cadillac into a 70s-inspired Street.

A rare Diamond T truck build has Mike and his crew scrambling to keep up with their client's demands; Avery battles a hornet's nest, his mother and his own impending sense of doom as auction day arrives.

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.

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

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

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

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

Dale has to confront his past in a desperate attempt to keep his failing business alive; Dave has a meltdown stranded on a back road with a heavy load; Craig gets greasy on a biodiesel run with his girlfriend's truck.

Born free of an Ojibwe father and an escaped-slave mother in Upper Canada, John 'Daddy' Hall fought in the war of 1812, was captured and sold into slavery.

Exploring the real, and often misrepresented, history of Indigenous peoples on the land that is now called Canada; taking an in-depth look at the relationship between Indigenous people, the land and the settlers.

Kevin Wenstob negotiates a deal with a big new customer who drives a hard bargain; Erik struggles to fix the mill's broken log loader and Sarah catches an interloper at the mill.

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.

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

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

Hawkeye is willing to wheel and deal with anyone for a new pair of boots.

Hawkeye and Trapper arrange for an unauthorized but much-needed nose job for an enlisted man.

Martha Nelson creates a one-of-a-kind doll to sell at local Kentucky craft markets; a visionary young entrepreneur uses her artwork as inspiration for a mass-produced doll that sparks a multi-billion-dollar toy craze.

Kevin Wenstob negotiates a deal with a big new customer who drives a hard bargain; Erik struggles to fix the mill's broken log loader and Sarah catches an interloper at the mill.

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.

Twisted Sister's Dee Snider drops by the shop to get a custom "Sugar Bear" front end put on his Von Dutch motorcycle; bike builder Sugar Bear works at his own pace, while Snider needs the bike in a hurry; Ryan and Horny Mike look for a new project.

Twisted Sister's Dee Snider asks Danny to turn his brand new Tesla into a rocker's ride; the crew suspects Snider's car may be possessed; Danny and Davey Deals spot a 1970 Monte Carlo, and Danny tries to convince the owner to let him take it home.

Hawkeye is willing to wheel and deal with anyone for a new pair of boots.

Hawkeye and Trapper arrange for an unauthorized but much-needed nose job for an enlisted man.

A former amusement park employee combines his animatronic knowledge with the cassette tape to create the world's first realistic talking toy; a NASA engineer invents an entirely new toy segment stemming from the boring old squirt gun.

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

Bold visionaries risk bringing Mexican food to Americans, creating the top-selling condiment, famous snack chip brands and pairing chips and salsa.

On Chicago's North Side, Mike and Jersey get VIP access to a historic home that features four floors of high-end antique toys.

A ruthless mogul takes on a little-known inventor in a high stakes battle that will change the world forever, asking the question of whether a farm-boy can beat a titan with endless resources.

Martha Nelson creates a one-of-a-kind doll to sell at local Kentucky craft markets; a visionary young entrepreneur uses her artwork as inspiration for a mass-produced doll that sparks a multi-billion-dollar toy craze.

On Chicago's North Side, Mike and Jersey get VIP access to a historic home that features four floors of high-end antique toys.

A ruthless mogul takes on a little-known inventor in a high stakes battle that will change the world forever, asking the question of whether a farm-boy can beat a titan with endless resources.

A former amusement park employee combines his animatronic knowledge with the cassette tape to create the world's first realistic talking toy; a NASA engineer invents an entirely new toy segment stemming from the boring old squirt gun.

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

Bold visionaries risk bringing Mexican food to Americans, creating the top-selling condiment, famous snack chip brands and pairing chips and salsa.

Hawkeye is willing to wheel and deal with anyone for a new pair of boots.

Hawkeye and Trapper arrange for an unauthorized but much-needed nose job for an enlisted man.

For many years Hogan's Alley was the heart of Vancouver's Black community; in the 1850s James Douglas invited Blacks to settle Vancouver island in an effort to stave off American annexation.

Discovering the roots of Black music in Canada, from the early black settlers of the Underground Railroad to the 1960s Caribbean migration, which introduced music which shaped all music within Canada today.

Examining the systemic barriers that Black artists face in the radio and music label industries and how this led to pivotal moments and historic protests that shaped the current landscape of the music industry today.

Logger Kevin Wenstob's best day ever turns into his worst, when a sudden disaster threatens to shut down his timber claim and his sawmill.

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.

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

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

A dispossessed Korean family and a girl with a GI baby cause problems for the 4077th.

For a few days the 4077th has no casualties, but when the fighting picks up, it is back to business as usual.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

Three stories of men willing to take risks to escape the cold, dark cells of "the Rock"; six convicts organize a jailbreak; three men attempt an elaborate breakout.

Logger Kevin Wenstob's best day ever turns into his worst, when a sudden disaster threatens to shut down his timber claim and his sawmill.

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.

Danny builds a world-class bike for a high-end client, and if all goes well it could mean a ton of new business for the shop; Mike and Ryan hunt for the perfect Mustang and Kevin spots a car his grandmother used to drive.

A high-end client has his heart set on a tricked-out '68 Camaro, so Danny sets out to find one and give it the world-class Counts Kustoms treatment; Kevin spots a 1969 AMX that he knows Danny has always wanted.

A dispossessed Korean family and a girl with a GI baby cause problems for the 4077th.

For a few days the 4077th has no casualties, but when the fighting picks up, it is back to business as usual.

On the Hanoi Hilton, an American POW prison of the Vietnam War located in the city of Hanoi, Vietnam; captives include John McCain, the group of airmen who invent a secret communication code, and Jerimiah Denton who sneaks messages home on live TV.

On ADX, "Alcatraz of the Rockies" located in Florence, Colorado, Ishmael Petty attacks the staff; Tommy Silverstein finds a way to communicate with Ramzi Youssef; an inmate starves himself to protest the prison's policies.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

Three stories of men willing to take risks to escape the cold, dark cells of "the Rock"; six convicts organize a jailbreak; three men attempt an elaborate breakout.

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

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

Three stories of men willing to take risks to escape the cold, dark cells of "the Rock"; six convicts organize a jailbreak; three men attempt an elaborate breakout.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

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

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

On the Hanoi Hilton, an American POW prison of the Vietnam War located in the city of Hanoi, Vietnam; captives include John McCain, the group of airmen who invent a secret communication code, and Jerimiah Denton who sneaks messages home on live TV.

On ADX, "Alcatraz of the Rockies" located in Florence, Colorado, Ishmael Petty attacks the staff; Tommy Silverstein finds a way to communicate with Ramzi Youssef; an inmate starves himself to protest the prison's policies.

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

A dispossessed Korean family and a girl with a GI baby cause problems for the 4077th.

For a few days the 4077th has no casualties, but when the fighting picks up, it is back to business as usual.

Tucked between Griffintown and St. Henri in Montreal's Sud Ouest is Little Burgundy, home to a Black population led by Black men who worked in Canada's railway industry as sleeping car porters.

Explore the journey of Black women in Canadian music and their significant contributions and breakthroughs, which paved the way for artists despite limited industry support, racism and sexism, and their ongoing fight for recognition in the industry.

Explore the current state of Black music in Canada, the impact of losing Canada's first Black radio station FLOW 93.5, and what's next for Black Canadian artists with the power of the internet.

Kevin faces disasters everywhere; his logging operation is shut down, his main client threatens to walk, and he locks horns with his right-hand man.

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

Authorities find a traveler's pot pipe in Blaine; in Port Huron, a traveler's past may come back to haunt him.

A Canadian must deliver the truth before visiting his wife and child; an officer finds a skull at the JFK mail facility.

The personnel of the 4077th respond in the usual manner when supply lines are cut short and they face critical shortages.

Hawkeye and Trapper "persuade" Frank not to request a dishonorable discharge for a wounded homosexual soldier.

Counting down the top 10 locations around the world that may be hiding alien bases, including a cavern beneath the ice of Antarctica, a lake in China that is a hotspot for UFOs, and a pyramid under the slopes of Mount Denali.

Kevin faces disasters everywhere; his logging operation is shut down, his main client threatens to walk, and he locks horns with his right-hand man.

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

Sailor Jerry representatives enlist the guys to build a bike commemorating the late tattoo artist's iconic style and to auction it off at a charity fundraiser; Danny decides it's time for Mike and Ryan to improve their body art.

Family members bring in an old pickup truck to be restored in memory of their mother, and Danny needs to figure out how to build the perfect tribute vehicle without blowing the budget; later, Danny finds a rare old Oldsmobile 442.

The personnel of the 4077th respond in the usual manner when supply lines are cut short and they face critical shortages.

Hawkeye and Trapper "persuade" Frank not to request a dishonorable discharge for a wounded homosexual soldier.

The Mutual UFO Network is an organization devoted to the scientific investigation of unidentified aerial phenomena and other unexplained encounters; with more than five decades of investigations, MUFON's extensive database could contain proof.

Counting down 10 intriguing symbols and codes found across the globe that might contain proof of otherworldly contact; from glyphs in the Peruvian desert, to spiral petroglyphs embedded with advanced math, and a language with an unexplained origin.

After decades of secrecy, denials and cover-ups, the CIA in 2013 declassify documents confirming the existence of secret military research facility Area 51.

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.

Counting down the top 10 locations around the world that may be hiding alien bases, including a cavern beneath the ice of Antarctica, a lake in China that is a hotspot for UFOs, and a pyramid under the slopes of Mount Denali.

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.

After decades of secrecy, denials and cover-ups, the CIA in 2013 declassify documents confirming the existence of secret military research facility Area 51.

The Mutual UFO Network is an organization devoted to the scientific investigation of unidentified aerial phenomena and other unexplained encounters; with more than five decades of investigations, MUFON's extensive database could contain proof.

Counting down 10 intriguing symbols and codes found across the globe that might contain proof of otherworldly contact; from glyphs in the Peruvian desert, to spiral petroglyphs embedded with advanced math, and a language with an unexplained origin.

The personnel of the 4077th respond in the usual manner when supply lines are cut short and they face critical shortages.

Hawkeye and Trapper "persuade" Frank not to request a dishonorable discharge for a wounded homosexual soldier.

Mike restores a 1971 Super Bee, struggles to sell cars, and hunts for a new place to live.

Vandalism strikes the Wildman shop, inspiring Avery to finish building his Manta Coyote kit car; Mike hires a secret labourer to help with his '71 Super Bee, and plans an auction of his car collection.

Dave and Tristan fight an antique wood boiler and each other leading to a showdown between father and son; Craig gets muddy on a radio antenna delivery job that leaves its mark; Dale goes on a family trip to help cut a deal for his dad.

Mike restores a 1971 Super Bee, struggles to sell cars, and hunts for a new place to live.

Vandalism strikes the Wildman shop, inspiring Avery to finish building his Manta Coyote kit car; Mike hires a secret labourer to help with his '71 Super Bee, and plans an auction of his car collection.

Dave and Tristan fight an antique wood boiler and each other leading to a showdown between father and son; Craig gets muddy on a radio antenna delivery job that leaves its mark; Dale goes on a family trip to help cut a deal for his dad.

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

The evolution of America's most beloved sports of baseball, basketball and football are made possible by the innovations of sporting goods pioneers named Spalding, Wilson, and the Rawlings brothers.

Flying solo in Wisconsin, Mike gets VIP access to a legendary race car driver's vast collection of motorbikes and memorabilia and is determined to drive away with one of his prized two-wheelers.

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.

Turtlemania hits the shop when a seller tries to pawn a 1991 Teenage Mutant Ninja Turtles action figure and prototype; Rick heads to the gun range to test out a deadly 1800s "manstopper" pistol; a model of the Las Vegas Desert Inn hotel.

It's game-time for Rick and the guys when some of the most collectible NBA items are brought into the shop.

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

When weapons worth $1 million are stolen, the team tracks the evidence to a charity event; Mosley gets herself added to the event's guest list, bringing Callen and Sam along as her security detail.

Sam goes under cover as a day trader after an investment banker who has ties to Russia is murdered; one of Callen's aliases is the victim of credit card theft.

A tragic mission leads each member of the SWAT team to contend with their emotional distress in varied ways.

As the team helps the LAPD search for the prime suspect in a woman's disappearance, they're joined in the field by a new team member; the strain between Chris and Street comes to a head.

Mumford returns to work and investigates a 15-year-old cold case that holds a personal connection and leads to the discovery of a dangerous drug ring; Hondo is leery of Leroy's motives.

A tragic mission leads each member of the SWAT team to contend with their emotional distress in varied ways.

As the team helps the LAPD search for the prime suspect in a woman's disappearance, they're joined in the field by a new team member; the strain between Chris and Street comes to a head.

Mumford returns to work and investigates a 15-year-old cold case that holds a personal connection and leads to the discovery of a dangerous drug ring; Hondo is leery of Leroy's motives.

When weapons worth $1 million are stolen, the team tracks the evidence to a charity event; Mosley gets herself added to the event's guest list, bringing Callen and Sam along as her security detail.

Sam goes under cover as a day trader after an investment banker who has ties to Russia is murdered; one of Callen's aliases is the victim of credit card theft.

Mike and Jersey visit a flea market junkie in Louisiana; Robbie and Danielle scour a jam-packed Arizona property where nearly everything is for sale.

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

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

With the mill still desperately short of red cedar, Kevin moves his log salvaging operation to Barkley Sound to chase bigger logs; Sarah hustles to keep her clients happy.

After Kevin almost loses his log salvaging bounty, he heads back up the mountainside to blast a huge boulder in his way, while the risk of forest fires threatens to shut him down.

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

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

When weapons worth $1 million are stolen, the team tracks the evidence to a charity event; Mosley gets herself added to the event's guest list, bringing Callen and Sam along as her security detail.

Sam goes under cover as a day trader after an investment banker who has ties to Russia is murdered; one of Callen's aliases is the victim of credit card theft.

A tragic mission leads each member of the SWAT team to contend with their emotional distress in varied ways.

As the team helps the LAPD search for the prime suspect in a woman's disappearance, they're joined in the field by a new team member; the strain between Chris and Street comes to a head.

Mumford returns to work and investigates a 15-year-old cold case that holds a personal connection and leads to the discovery of a dangerous drug ring; Hondo is leery of Leroy's motives.

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

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

In northern Wyoming's Powder River Valley, a group of ranchers band together to protect their rights to graze cattle; a powerful cabal of cattle barons smear the ranchers as common thieves and plot an invasion.

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

Quawntay Adams, a young African American man from Los Angeles gets caught up in a large-scale marijuana bust and is sentenced to a long prison term; when he finds out he is going to be a father, he determines to break out of his cell.

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

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

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

Quawntay Adams, a young African American man from Los Angeles gets caught up in a large-scale marijuana bust and is sentenced to a long prison term; when he finds out he is going to be a father, he determines to break out of his cell.

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

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

In northern Wyoming's Powder River Valley, a group of ranchers band together to protect their rights to graze cattle; a powerful cabal of cattle barons smear the ranchers as common thieves and plot an invasion.

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

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

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.

Multiple 911 calls push Dawson City to the brink as they battle to save a family home and a historic building, while snowstorms pummel Whitehorse, causing chaos and forcing a dangerous backcountry helicopter rescue mission.

Logger Kevin Wenstob is forced to make a tough call to make up for lost time on his mountainside timber claim.

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 Ukrainian traveler may split after divorcing her husband; a suspicious package is sent to the lab for narcotics testing.

A Canadian is interviewed after officers find pictures of pot plants on his phone; a canine team detects marijuana on a couple.

After the mail comes, Trapper makes plans to desert, and Frank rearranges his stock portfolio.

The 4077th complicates the endeavors of two secret agents investigating each other.

A parade of unique sports memorabilia marches into the shop as their owners try to score big money and avoid the agony of defeat.

Logger Kevin Wenstob is forced to make a tough call to make up for lost time on his mountainside timber claim.

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

Danny customizes a motorcycle in a psychedelic fashion and worries he may not be able to turn it over to the customer when it's done; Danny hits the streets to check out a pair of classic Mini Coopers and a rare Split Bumper Camaro.

A memorial bike project turns into a challenge for the paint team after builder Shannon fails to get all of the necessary information from the customer; Danny stumbles upon a collection of fast rides.

After the mail comes, Trapper makes plans to desert, and Frank rearranges his stock portfolio.

The 4077th complicates the endeavors of two secret agents investigating each other.

The dramatic tale of Owens' athletic dedication, perseverance and triumph over Hitler's Aryan supremacy agenda.

A parade of unique sports memorabilia marches into the shop as their owners try to score big money and avoid the agony of defeat.

A comprehensive exploration into the life and legacy of the legendary Olympian and one of the greatest all-around athletes of all time and explores what it means to be an American through the pivotal intersection of identity and sport.

A parade of unique sports memorabilia marches into the shop as their owners try to score big money and avoid the agony of defeat.

A comprehensive exploration into the life and legacy of the legendary Olympian and one of the greatest all-around athletes of all time and explores what it means to be an American through the pivotal intersection of identity and sport.

Chum tries to put his best foot forward when a Nike Lebron sneaker hits the counter; Rick keeps watch on a seller who comes in with a signed "Pulp Fiction" poster; Corey might be in over his head when several Jim Henson sculptures float his way.

The dramatic tale of Owens' athletic dedication, perseverance and triumph over Hitler's Aryan supremacy agenda.

After the mail comes, Trapper makes plans to desert, and Frank rearranges his stock portfolio.

The 4077th complicates the endeavors of two secret agents investigating each other.

Mike fixes a 1961 Cadillac to showcase and smash to pieces at Rust Valley's annual Demolition Derby; mechanic Dave enters a 1974 Chrysler New Yorker for the big event.

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.

The Dawson City Fire Department struggles in the absence of their chief; Ray is stuck in deep snow on a remote backroad and Colin races against an incoming storm to keep the travelling public safe.

Kevin and his wife Sarah take on a special order; they need to find a one-in-a-million fir tree for a sailing school that is rebuilding a rare replica of a 1778-era schooner.

Mike fixes a 1961 Cadillac to showcase and smash to pieces at Rust Valley's annual Demolition Derby; mechanic Dave enters a 1974 Chrysler New Yorker for the big event.

A conductor arrives to lead a symphony orchestra; a drug dealer tries to enter the United States.

CBP worries a man from Nicaragua may not leave the U.S.; a traveler's plan to start an e-vape business may go up in smoke.

A new area commander scares everyone in the 4077th with his militarism.

Casualties keep Hawkeye and Trapper from a leave in Tokyo.

While it may sound like science fiction, numerous government-run mind control programs have been documented.

Kevin and his wife Sarah take on a special order; they need to find a one-in-a-million fir tree for a sailing school that is rebuilding a rare replica of a 1778-era schooner.

Mike fixes a 1961 Cadillac to showcase and smash to pieces at Rust Valley's annual Demolition Derby; mechanic Dave enters a 1974 Chrysler New Yorker for the big event.

To surprise their father with the ultimate gift, brothers ask Danny to restore the 1957 Special Edition T-Bird that has been sitting in the family's pasture for many years; Mike and Ryan find a car collector with some unusual rides.

Musician Dee Snider brings a brand new BMW Z4 to the shop to be customized as an anniversary present for his wife, Suzette; however, Suzette is not happy with the finished product; Mike builds a picnic table on wheels.

A new area commander scares everyone in the 4077th with his militarism.

Casualties keep Hawkeye and Trapper from a leave in Tokyo.

Recent discoveries of previously unknown hominids and breakthroughs in genetic technology give Bigfoot believers new hope that the creature will be found; asking if America is prepared for doomsday; America's only unsolved airplane hijacking.