From doomed voyages across continents and oceans to covert CIA operations, these missions show that no matter how much preparation and planning are done, things can still turn deadly.

After raising the 40,000-pound boulder from Lot 8, the team is astonished to find a manmade feature that may be hiding a shaft or tunnel.

A twisted mastermind uses homemade bombs to terrorize the nation. Despite one of the most extensive manhunts in U.S. history, he still manages to stay one step ahead of law enforcement for nearly two decades. How did investigators finally catch "The Unabomber," and bring one of America's most elusive criminals to justice?

In the razor's-edge theater of global brinkmanship, the world has come closer to annihilation than most ever knew. A NATO war game once spooked the Soviets toward a potential nuclear strike, while a daring Cold War project produced a drone-bomber hybrid capable of carrying 16 nuclear weapons. From experimental war machines to the Presidential "Doomsday Plane" built to command America through apocalypse, these are the plans that reveal how near we've stood to the unthinkable.

From iconic robes, jerseys, crowns and sunglasses to dangerous weapons, we explore the wild tales of long-lost celebrity artifacts that turn into big-money paydays.

From ancient war machines to devastating weapons of mass destruction, these are the innovations that changed warfare and rank among history's deadliest.

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.

A Rust Valley road trip steers Mike into the danger zone after Connor gives him an ultimatum: buy another car and Connor will blow up one from the Field of Dreams.

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.

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.

A Rust Valley road trip steers Mike into the danger zone after Connor gives him an ultimatum: buy another car and Connor will blow up one from the Field of Dreams.

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

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

Father Mulcahy takes being passed over for a promotion philosophically until he hears of a heroic helicopter pilot's advancement.

Father Mulcahy writes a pre-Christmas letter home to his sister.

The notorious mafia kingpin Sam Giancana is shot execution style in his own home. The larger-than-life mobster had many enemies, from inside the mafia to the CIA. Was his death a crime of passion? The result of unpaid debts? Or part of an alleged government coverup for a presidential assassination? Why was Sam Giancana killed, and who ordered the hit?

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.

There are some strongholds built to protect the sacred; there are others used for more sinister purposes; uncover the stories behind some of the world's most imposing structures.

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.

Father Mulcahy takes being passed over for a promotion philosophically until he hears of a heroic helicopter pilot's advancement.

Father Mulcahy writes a pre-Christmas letter home to his sister.

The notorious mafia kingpin Sam Giancana is shot execution style in his own home. The larger-than-life mobster had many enemies, from inside the mafia to the CIA. Was his death a crime of passion? The result of unpaid debts? Or part of an alleged government coverup for a presidential assassination? Why was Sam Giancana killed, and who ordered the hit?

From doomed voyages across continents and oceans to covert CIA operations, these missions show that no matter how much preparation and planning are done, things can still turn deadly.

After raising the 40,000-pound boulder from Lot 8, the team is astonished to find a manmade feature that may be hiding a shaft or tunnel.

A series of shocking murders shake the city of Boston to its core. Each victim, 13 women in all, bore the signature of this serial killer: a bow wrapped around their neck. With the Boston police department facing enormous pressure to bring this predator-or predators-to justice, all eyes are on Boston. Sixty years later, the question remains: who was the Boston Strangler?

The ancient legends of the Norse read like modern science-fiction, with powerful gods wielding mythic weapons and high technology.

The notorious mafia kingpin Sam Giancana is shot execution style in his own home. The larger-than-life mobster had many enemies, from inside the mafia to the CIA. Was his death a crime of passion? The result of unpaid debts? Or part of an alleged government coverup for a presidential assassination? Why was Sam Giancana killed, and who ordered the hit?

A series of shocking murders shake the city of Boston to its core. Each victim, 13 women in all, bore the signature of this serial killer: a bow wrapped around their neck. With the Boston police department facing enormous pressure to bring this predator-or predators-to justice, all eyes are on Boston. Sixty years later, the question remains: who was the Boston Strangler?

The ancient legends of the Norse read like modern science-fiction, with powerful gods wielding mythic weapons and high technology.

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.

There are some strongholds built to protect the sacred; there are others used for more sinister purposes; uncover the stories behind some of the world's most imposing structures.

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.

Father Mulcahy takes being passed over for a promotion philosophically until he hears of a heroic helicopter pilot's advancement.

Father Mulcahy writes a pre-Christmas letter home to his sister.

The salvage team from Priestly Demolition takes their first road trip of the year to a historic mining town where the discovery of old police reports sets them on an unexpected hunt for hidden gold.

Old rivalries bring new alliances as Rust Valley's competing shops get ready to face off at the annual Hit-to-Pass race; the cost of Avery's Deuce-and-a-Half music truck spirals out of control.

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.

The salvage team from Priestly Demolition takes their first road trip of the year to a historic mining town where the discovery of old police reports sets them on an unexpected hunt for hidden gold.

Old rivalries bring new alliances as Rust Valley's competing shops get ready to face off at the annual Hit-to-Pass race; the cost of Avery's Deuce-and-a-Half music truck spirals out of control.

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

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

B.J. becomes a surrogate father to a Korean family when the young daughter seeks medical assistance for her father.

Hawkeye falls for a Swedish doctor who arrives at the 4077th to observe combat surgery.

In the razor's-edge theater of global brinkmanship, the world has come closer to annihilation than most ever knew. A NATO war game once spooked the Soviets toward a potential nuclear strike, while a daring Cold War project produced a drone-bomber hybrid capable of carrying 16 nuclear weapons. From experimental war machines to the Presidential "Doomsday Plane" built to command America through apocalypse, these are the plans that reveal how near we've stood to the unthinkable.

Did a video camera capture a ghostly child darting through a cemetery?; could a toddler be communicating with her deceased uncle?; is a spinning jar in a kitchen cupboard proof of an unseen force at work?

What's behind the brain-numbing noise tormenting Brooklyn residents?; has Bigfoot's call finally been caught on tape?; are the eerie sounds recorded on Mars a message from an alien race?; Tony Harris and his team investigate chilling audio evidence.

Could a lost metropolis lie beneath the waters off Louisiana? Does a cryptic English carving point the way to the Holy Grail? And might the enigmatic Peralta Stones reveal the path to desert gold? Tony Harris and his team investigate compelling footage of ancient ruins and relics from around the world and deliver their verdict.

B.J. becomes a surrogate father to a Korean family when the young daughter seeks medical assistance for her father.

Hawkeye falls for a Swedish doctor who arrives at the 4077th to observe combat surgery.

Did a video camera capture a ghostly child darting through a cemetery?; could a toddler be communicating with her deceased uncle?; is a spinning jar in a kitchen cupboard proof of an unseen force at work?

A series of shocking murders shake the city of Boston to its core. Each victim, 13 women in all, bore the signature of this serial killer: a bow wrapped around their neck. With the Boston police department facing enormous pressure to bring this predator-or predators-to justice, all eyes are on Boston. Sixty years later, the question remains: who was the Boston Strangler?

In the razor's-edge theater of global brinkmanship, the world has come closer to annihilation than most ever knew. A NATO war game once spooked the Soviets toward a potential nuclear strike, while a daring Cold War project produced a drone-bomber hybrid capable of carrying 16 nuclear weapons. From experimental war machines to the Presidential "Doomsday Plane" built to command America through apocalypse, these are the plans that reveal how near we've stood to the unthinkable.

Could there be aliens hiding in the Amazon? Something crashes at a secret U.S. government testing site, but is it a UFO? Can a piece of meat be possessed by the devil? Strange writing and letters are found on a rock. Are they connected to one of the greatest mysteries in American History? Tony Harris and his team of experts dive into these claims to find the truth.

A species thought lost forever is spotted again; a dog plays an unexpected role in recovering the World Cup trophy; a puppy from the Ice Age emerges intact after 18,000 years; revealing just how unpredictable the natural world can be.

In the razor's-edge theater of global brinkmanship, the world has come closer to annihilation than most ever knew. A NATO war game once spooked the Soviets toward a potential nuclear strike, while a daring Cold War project produced a drone-bomber hybrid capable of carrying 16 nuclear weapons. From experimental war machines to the Presidential "Doomsday Plane" built to command America through apocalypse, these are the plans that reveal how near we've stood to the unthinkable.

Could there be aliens hiding in the Amazon? Something crashes at a secret U.S. government testing site, but is it a UFO? Can a piece of meat be possessed by the devil? Strange writing and letters are found on a rock. Are they connected to one of the greatest mysteries in American History? Tony Harris and his team of experts dive into these claims to find the truth.

A species thought lost forever is spotted again; a dog plays an unexpected role in recovering the World Cup trophy; a puppy from the Ice Age emerges intact after 18,000 years; revealing just how unpredictable the natural world can be.

Did a video camera capture a ghostly child darting through a cemetery?; could a toddler be communicating with her deceased uncle?; is a spinning jar in a kitchen cupboard proof of an unseen force at work?

What's behind the brain-numbing noise tormenting Brooklyn residents?; has Bigfoot's call finally been caught on tape?; are the eerie sounds recorded on Mars a message from an alien race?; Tony Harris and his team investigate chilling audio evidence.

Could a lost metropolis lie beneath the waters off Louisiana? Does a cryptic English carving point the way to the Holy Grail? And might the enigmatic Peralta Stones reveal the path to desert gold? Tony Harris and his team investigate compelling footage of ancient ruins and relics from around the world and deliver their verdict.

B.J. becomes a surrogate father to a Korean family when the young daughter seeks medical assistance for her father.

Hawkeye falls for a Swedish doctor who arrives at the 4077th to observe combat surgery.

Ted, Justin and Brandon race against the clock to extract a highly valuable art deco bar from a historic watering hole, but its sheer size and weight pose unexpected challenges.

Rust Valley's auto shops battle it out at the high-impact Hit to Pass drag race. But when one competitor is accused of cheating, the brawl moves from the track to the pit.

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

Ted, Justin and Brandon race against the clock to extract a highly valuable art deco bar from a historic watering hole, but its sheer size and weight pose unexpected challenges.

Rust Valley's auto shops battle it out at the high-impact Hit to Pass drag race. But when one competitor is accused of cheating, the brawl moves from the track to the pit.

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

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

Col. Potter's mare, Sophie, mysteriously disappears from her corral; Hawkeye and B.J. try to help a young Korean.

A young surgeon from Tokyo makes the doctors of the 4077th feel out of touch with new medical practices.

From iconic robes, jerseys, crowns and sunglasses to dangerous weapons, we explore the wild tales of long-lost celebrity artifacts that turn into big-money paydays.

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

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

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

A young machinist in England invents one of the world's most successful toys when he creates a toy car small enough to fit inside a matchbox for his daughter to take to school; Elliot Handler creates one of the biggest toy rivalries in history.

Col. Potter's mare, Sophie, mysteriously disappears from her corral; Hawkeye and B.J. try to help a young Korean.

A young surgeon from Tokyo makes the doctors of the 4077th feel out of touch with new medical practices.

From iconic robes, jerseys, crowns and sunglasses to dangerous weapons, we explore the wild tales of long-lost celebrity artifacts that turn into big-money paydays.

A species thought lost forever is spotted again; a dog plays an unexpected role in recovering the World Cup trophy; a puppy from the Ice Age emerges intact after 18,000 years; revealing just how unpredictable the natural world can be.

From doomed voyages across continents and oceans to covert CIA operations, these missions show that no matter how much preparation and planning are done, things can still turn deadly.

Mike and Jersey go gaga for a Texas collection of contraptions and curios while Robbie's negotiating skills are put to the test.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

A young machinist in England invents one of the world's most successful toys when he creates a toy car small enough to fit inside a matchbox for his daughter to take to school; Elliot Handler creates one of the biggest toy rivalries in history.

Mike and Jersey go gaga for a Texas collection of contraptions and curios while Robbie's negotiating skills are put to the test.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

From iconic robes, jerseys, crowns and sunglasses to dangerous weapons, we explore the wild tales of long-lost celebrity artifacts that turn into big-money paydays.

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

A young machinist in England invents one of the world's most successful toys when he creates a toy car small enough to fit inside a matchbox for his daughter to take to school; Elliot Handler creates one of the biggest toy rivalries in history.

Col. Potter's mare, Sophie, mysteriously disappears from her corral; Hawkeye and B.J. try to help a young Korean.

A young surgeon from Tokyo makes the doctors of the 4077th feel out of touch with new medical practices.

While salvaging an old hotel in the heart of the city, Ted pulls out all the stops to confirm his suspicion there was once a popular underground nightclub where forgotten treasures may still hide.

Mike and Avery embark on a cross-country road trip, which is interrupted by an unexpected call from home; JF borrows shop space from Mike to restore a 1955 GMC truck and his relationship with his brother.

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

While salvaging an old hotel in the heart of the city, Ted pulls out all the stops to confirm his suspicion there was once a popular underground nightclub where forgotten treasures may still hide.

Mike and Avery embark on a cross-country road trip, which is interrupted by an unexpected call from home; JF borrows shop space from Mike to restore a 1955 GMC truck and his relationship with his brother.

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.

Radar falls in love; Margaret celebrates her divorce.

The 4077th's evacuation to a nearby cave poses a big problem for Hawkeye, then Col. Potter becomes aware of it.

A leopard goes on a rampage in India; a paraglider plummets to earth and uses his skills and fast thinking to survive; a woman gets a little too close for comfort to an elephant and suffers the consequences.

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.

Theo Wilson time-travels to the Battle of Stalingrad in 1942, where the underdog Russian army is about to pull off a victory that will turn the tide of the war in favor of Allied forces.

Theo Wilson time-travels to the mid-1800s, where he finds Jesse James; Wilson separates myth from reality in Jesse's career and charts how a thirst for fame, riches and revenge led James toward his fated murder by a member of his own gang.

Theo Wilson travels back in time to Salem, Mass., in 1692, where the village is self-destructing over allegations of witchcraft among dozens of its citizens.

Theo Wilson travels back in time to April 19, 1995, when Oklahoma City is rocked by a two-ton fertilizer bomb shortly after 9 a.m. ; Theo investigates the layers of this complicated story.

Radar falls in love; Margaret celebrates her divorce.

The 4077th's evacuation to a nearby cave poses a big problem for Hawkeye, then Col. Potter becomes aware of it.

A leopard goes on a rampage in India; a paraglider plummets to earth and uses his skills and fast thinking to survive; a woman gets a little too close for comfort to an elephant and suffers the consequences.

Mike and Jersey go gaga for a Texas collection of contraptions and curios while Robbie's negotiating skills are put to the test.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

When Corey and Chum are invited to a BBQ at Rick's house, they begin to suspect he may have a hoarding problem. As Rick gives them a guided tour of his museum, they take a trip down memory lane, revisiting some of the pawn shop's greatest finds, like a Volkswagen Karmann Ghia, Where the Wild Things Are artwork, and a couple of classic pinball machines.

Joey and Kallie chase down the legendary "Poseidon" through deep water and shattered lines, determined to finally end a decades-long pursuit. Troy and Pickle gamble on an old-timer's hot tip in a remote bayou. Bruce and Anna use rare high-water access to slip into untouched backwoods. Calum fights exhaustion, navigation mishaps, and massive gators alone as he pushes himself to hit his quota. Chase struggles to snipe gators in open water.

A leopard goes on a rampage in India; a paraglider plummets to earth and uses his skills and fast thinking to survive; a woman gets a little too close for comfort to an elephant and suffers the consequences.

When Corey and Chum are invited to a BBQ at Rick's house, they begin to suspect he may have a hoarding problem. As Rick gives them a guided tour of his museum, they take a trip down memory lane, revisiting some of the pawn shop's greatest finds, like a Volkswagen Karmann Ghia, Where the Wild Things Are artwork, and a couple of classic pinball machines.

Joey and Kallie chase down the legendary "Poseidon" through deep water and shattered lines, determined to finally end a decades-long pursuit. Troy and Pickle gamble on an old-timer's hot tip in a remote bayou. Bruce and Anna use rare high-water access to slip into untouched backwoods. Calum fights exhaustion, navigation mishaps, and massive gators alone as he pushes himself to hit his quota. Chase struggles to snipe gators in open water.

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.

Theo Wilson time-travels to the Battle of Stalingrad in 1942, where the underdog Russian army is about to pull off a victory that will turn the tide of the war in favor of Allied forces.

Theo Wilson time-travels to the mid-1800s, where he finds Jesse James; Wilson separates myth from reality in Jesse's career and charts how a thirst for fame, riches and revenge led James toward his fated murder by a member of his own gang.

Theo Wilson travels back in time to Salem, Mass., in 1692, where the village is self-destructing over allegations of witchcraft among dozens of its citizens.

Theo Wilson travels back in time to April 19, 1995, when Oklahoma City is rocked by a two-ton fertilizer bomb shortly after 9 a.m. ; Theo investigates the layers of this complicated story.

Radar falls in love; Margaret celebrates her divorce.

The 4077th's evacuation to a nearby cave poses a big problem for Hawkeye, then Col. Potter becomes aware of it.

A lifelong collector's sprawling property proves to be uniquely challenging for the salvage team as they race to undercover enough valuable treasures to make their long road trip worthwhile; Ron is under pressure to get a vintage truck working.

Mike overhauls a 1955 Belair Wagon in hopes of turning a quick profit, while Avery embarks on an ambitious restoration of a rare 1956 Ford C.O.E.; Mike's betting streak continues.

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

A lifelong collector's sprawling property proves to be uniquely challenging for the salvage team as they race to undercover enough valuable treasures to make their long road trip worthwhile; Ron is under pressure to get a vintage truck working.

Mike overhauls a 1955 Belair Wagon in hopes of turning a quick profit, while Avery embarks on an ambitious restoration of a rare 1956 Ford C.O.E.; Mike's betting streak continues.

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 the Detroit airport, a family traveling 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.

Col. Flagg shows up at the 4077th again, convinced that Hawkeye is a Communist sympathizer.

A careless colonel increases the number of seriously wounded soldiers arriving at the compound.

Weapons rank among humanity's most powerful-and wildest-inventions. Some unleash mass destruction, while others are downright bizarre. From launching corpses with trebuchets, to turning animals into killing machines, and missiles guided by pigeons, these are the stories behind history's most outrageous weapons.

A look at whether time travel has already occurred, on purpose or by accident, and scientists who believe it is theoretically possible.

Throughout recorded history, many people have claimed to be able to see the future and can predict, or even influence, events they first witness in their mind's eye.

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

Col. Flagg shows up at the 4077th again, convinced that Hawkeye is a Communist sympathizer.

A careless colonel increases the number of seriously wounded soldiers arriving at the compound.

Weapons rank among humanity's most powerful-and wildest-inventions. Some unleash mass destruction, while others are downright bizarre. From launching corpses with trebuchets, to turning animals into killing machines, and missiles guided by pigeons, these are the stories behind history's most outrageous weapons.

Is it possible that Apollo 16 astronauts witnessed a UFO during a trip to the Moon?; did an alien craft leave a pattern of burns on a man's body?; are perfectly carved stone spheres discovered in Bosnia proof of extraterrestrials?

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

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

From a dog's space voyage, to a harrowing story of Arctic survival, to various trips through time; journeys so extraordinary that they are truly unbelievable.

Weapons rank among humanity's most powerful-and wildest-inventions. Some unleash mass destruction, while others are downright bizarre. From launching corpses with trebuchets, to turning animals into killing machines, and missiles guided by pigeons, these are the stories behind history's most outrageous weapons.

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

From a dog's space voyage, to a harrowing story of Arctic survival, to various trips through time; journeys so extraordinary that they are truly unbelievable.

A look at whether time travel has already occurred, on purpose or by accident, and scientists who believe it is theoretically possible.

Throughout recorded history, many people have claimed to be able to see the future and can predict, or even influence, events they first witness in their mind's eye.

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

Col. Flagg shows up at the 4077th again, convinced that Hawkeye is a Communist sympathizer.

A careless colonel increases the number of seriously wounded soldiers arriving at the compound.

Joe's flight is suspended; an unexpected injury; a risky cross-Canada journey to Turkey.

The Turkey waterbomber crew is rattled; a North Atlantic crossing; AJ gets married.

An avalanche risk forces a bombing mission above the Klondike Highway.

Joe's flight is suspended; an unexpected injury; a risky cross-Canada journey to Turkey.

The Turkey waterbomber crew is rattled; a North Atlantic crossing; AJ gets married.

The most notorious and murderous drug cartel kingpins in modern history.

In the 1990s, three violent cartels battled for control of the Mexican drug world; one brutally ambitious Narco, known as El Chapo, rose above the rest to create one unified cartel, and become the most powerful criminal in Mexico's history.

In the 1970s in Colombia, a petty thief rises to become the most powerful criminal in history, unleashing a bloody reign of terror to create the first global drug cartel and become the first billionaire kingpin of the 20th century.

While the Boston underworld was in chaos in the 1970s, Whitey Bulger schemed and killed his way through the ranks to become the most famous gangster in Boston history as well as the the subject of the longest manhunt in U.S. history.

In 1980s New York, two opposing factions of the American Mafia split the Gambino crime family down the middle; the old school and the new school struggle against one another; one murderous capo emerges as the Boss of Bosses.

In the 1990s, three violent cartels battled for control of the Mexican drug world; one brutally ambitious Narco, known as El Chapo, rose above the rest to create one unified cartel, and become the most powerful criminal in Mexico's history.

In the 1970s in Colombia, a petty thief rises to become the most powerful criminal in history, unleashing a bloody reign of terror to create the first global drug cartel and become the first billionaire kingpin of the 20th century.

While the Boston underworld was in chaos in the 1970s, Whitey Bulger schemed and killed his way through the ranks to become the most famous gangster in Boston history as well as the the subject of the longest manhunt in U.S. history.

In 1980s New York, two opposing factions of the American Mafia split the Gambino crime family down the middle; the old school and the new school struggle against one another; one murderous capo emerges as the Boss of Bosses.

The most notorious and murderous drug cartel kingpins in modern history.

In Arizona, Mike relives the thrill of speedway history, thanks to a motorbike-loving family, that has a garage full of one-of-a-kind racing mementos.

Mike indulges himself restoring his very first car, a 1961 Sunbeam; Avery buys an army truck, and recruits Mike to help him bring it home; tempers flare when Avery confronts Mike about the bottom line.

Mike takes on the build of a 71 Camaro to honour a friend battling cancer.

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

Mike indulges himself restoring his very first car, a 1961 Sunbeam; Avery buys an army truck, and recruits Mike to help him bring it home; tempers flare when Avery confronts Mike about the bottom line.

Mike takes on the build of a 71 Camaro to honour a friend battling cancer.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

A series of shocking murders shake the city of Boston to its core. Each victim, 13 women in all, bore the signature of this serial killer: a bow wrapped around their neck. With the Boston police department facing enormous pressure to bring this predator-or predators-to justice, all eyes are on Boston. Sixty years later, the question remains: who was the Boston Strangler?

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

It is hard to believe that the beginnings of modern endoscopy are really all thanks to one professional sword-swallower; or that lack of sleep has some strange upsides; these are some unthinkable experiments.

From doomed voyages across continents and oceans to covert CIA operations, these missions show that no matter how much preparation and planning are done, things can still turn deadly.

A species thought lost forever is spotted again; a dog plays an unexpected role in recovering the World Cup trophy; a puppy from the Ice Age emerges intact after 18,000 years; revealing just how unpredictable the natural world can be.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

A series of shocking murders shake the city of Boston to its core. Each victim, 13 women in all, bore the signature of this serial killer: a bow wrapped around their neck. With the Boston police department facing enormous pressure to bring this predator-or predators-to justice, all eyes are on Boston. Sixty years later, the question remains: who was the Boston Strangler?

From doomed voyages across continents and oceans to covert CIA operations, these missions show that no matter how much preparation and planning are done, things can still turn deadly.

It is hard to believe that the beginnings of modern endoscopy are really all thanks to one professional sword-swallower; or that lack of sleep has some strange upsides; these are some unthinkable experiments.

Cost-cutting moves to save on some of the Titanic's three million rivets; shortcuts taken while building a gladiator stadium in ancient Rome; how a little carelessness triggers deadly engineering failures in history.

As the team makes discoveries on Lot 8 and in the Money Pit area, new research draws another link between the Oak Island mystery and the Knights Templar.

A species thought lost forever is spotted again; a dog plays an unexpected role in recovering the World Cup trophy; a puppy from the Ice Age emerges intact after 18,000 years; revealing just how unpredictable the natural world can be.

Cost-cutting moves to save on some of the Titanic's three million rivets; shortcuts taken while building a gladiator stadium in ancient Rome; how a little carelessness triggers deadly engineering failures in history.

As the team makes discoveries on Lot 8 and in the Money Pit area, new research draws another link between the Oak Island mystery and the Knights Templar.

A series of shocking murders shake the city of Boston to its core. Each victim, 13 women in all, bore the signature of this serial killer: a bow wrapped around their neck. With the Boston police department facing enormous pressure to bring this predator-or predators-to justice, all eyes are on Boston. Sixty years later, the question remains: who was the Boston Strangler?

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

From doomed voyages across continents and oceans to covert CIA operations, these missions show that no matter how much preparation and planning are done, things can still turn deadly.

Ted and the salvage team undertake the challenge of salvaging a decommissioned 727 airplane; while Ted scrambles for buyers, the pressure mounts as Ryan wants to see the airplane sold for scrap.

Fantasies turn to nightmares when Connor enlists Rust Bros on a personal build; Avery goes over budget on his dream truck; James tackles a project from his past.

As Matt and his team chase the elusive one that got away, they risk getting in over their heads, literally, as an extraction nearly sinks their whole trip.

Ted and the salvage team undertake the challenge of salvaging a decommissioned 727 airplane; while Ted scrambles for buyers, the pressure mounts as Ryan wants to see the airplane sold for scrap.

Fantasies turn to nightmares when Connor enlists Rust Bros on a personal build; Avery goes over budget on his dream truck; James tackles a project from his past.

Border officers stop a young British visitor meeting an American cyber pal at Detroit Metro Airport, and a Chinese traveler 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.

Hawkeye, B.J. and their medical cohorts find a new way to escape the depressive atmosphere of the war.

Both Charles and Klinger develop romantic liaisons while forgetting their troubles at Rosie's Bar.

A twisted mastermind uses homemade bombs to terrorize the nation. Despite one of the most extensive manhunts in U.S. history, he still manages to stay one step ahead of law enforcement for nearly two decades. How did investigators finally catch "The Unabomber," and bring one of America's most elusive criminals to justice?

In 1969, a serial killer taunts investigators with cryptic ciphers, leaving police and the public questioning his identity for over 50 years; new evidence and technology may finally be able to crack his code and discover who the Zodiac Killer is.

Despite centuries of sightings and searches, one deep-sea monster remains unidentified; as evidence continues to mount, the mystery endures as to whether the Loch Ness monster exists.

It's one of the most famous prehistoric monuments on Earth - a mysterious arrangement of stones that have adorned the English countryside for millennia; nobody knows how the landmark was built or why.

Hawkeye, B.J. and their medical cohorts find a new way to escape the depressive atmosphere of the war.

Both Charles and Klinger develop romantic liaisons while forgetting their troubles at Rosie's Bar.

A twisted mastermind uses homemade bombs to terrorize the nation. Despite one of the most extensive manhunts in U.S. history, he still manages to stay one step ahead of law enforcement for nearly two decades. How did investigators finally catch "The Unabomber," and bring one of America's most elusive criminals to justice?

Cost-cutting moves to save on some of the Titanic's three million rivets; shortcuts taken while building a gladiator stadium in ancient Rome; how a little carelessness triggers deadly engineering failures in history.

As the team makes discoveries on Lot 8 and in the Money Pit area, new research draws another link between the Oak Island mystery and the Knights Templar.

Notorious mobster Bugsy Siegel is gunned down in his Beverly Hills living room; Siegel's killing becomes front page news; no arrest is ever made.

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

A twisted mastermind uses homemade bombs to terrorize the nation. Despite one of the most extensive manhunts in U.S. history, he still manages to stay one step ahead of law enforcement for nearly two decades. How did investigators finally catch "The Unabomber," and bring one of America's most elusive criminals to justice?

Notorious mobster Bugsy Siegel is gunned down in his Beverly Hills living room; Siegel's killing becomes front page news; no arrest is ever made.

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

In 1969, a serial killer taunts investigators with cryptic ciphers, leaving police and the public questioning his identity for over 50 years; new evidence and technology may finally be able to crack his code and discover who the Zodiac Killer is.

Despite centuries of sightings and searches, one deep-sea monster remains unidentified; as evidence continues to mount, the mystery endures as to whether the Loch Ness monster exists.

It's one of the most famous prehistoric monuments on Earth - a mysterious arrangement of stones that have adorned the English countryside for millennia; nobody knows how the landmark was built or why.

Hawkeye, B.J. and their medical cohorts find a new way to escape the depressive atmosphere of the war.

Both Charles and Klinger develop romantic liaisons while forgetting their troubles at Rosie's Bar.

Ted puts Brandon's sales skills to the test, pushing him to figure out his future with the salvage team; a trip to Shelburne leads to a difficult extraction that has Justin running for the fire extinguisher.

While Avery struggles to save his business, Mike is determined to end the year on a high note with a build for an old friend but old secrets and conflicts with Connor get in his way.

While searching for abandoned relics along The Alaska Highway, Matt's team steps up as car hunters in their own right.

Ted puts Brandon's sales skills to the test, pushing him to figure out his future with the salvage team; a trip to Shelburne leads to a difficult extraction that has Justin running for the fire extinguisher.

While Avery struggles to save his business, Mike is determined to end the year on a high note with a build for an old friend but old secrets and conflicts with Connor get in his way.

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.

B.J. tries to organize a present-day, stateside gathering of 4077th families.

A clumsy soldier lifts the 4077th's spirits, but Col. Potter remains down in the dumps.

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

Is a picture taken in the 1890's the first Bigfoot photo ever? Is a recording captured in Pennsylvania a genuine Bigfoot howl? Why are UFOs drawn to Powerlines? Did a photographer inadvertently capture a UFO at the coronation of King Charles.

A security camera in Youngstown captures a strange creature in Ohio; a Proof viewer may have filmed the infamous Black Knight satellite; the source of a sound so loud it could be heard across the Equatorial Pacific Ocean.

Reports of a strange spinning vortex with a bright white center in the skies over Oklahoma; a sealed video in the Vatican archives allegedly shows a real case of demonic possession.

B.J. tries to organize a present-day, stateside gathering of 4077th families.

A clumsy soldier lifts the 4077th's spirits, but Col. Potter remains down in the dumps.

Is a picture taken in the 1890's the first Bigfoot photo ever? Is a recording captured in Pennsylvania a genuine Bigfoot howl? Why are UFOs drawn to Powerlines? Did a photographer inadvertently capture a UFO at the coronation of King Charles.

Notorious mobster Bugsy Siegel is gunned down in his Beverly Hills living room; Siegel's killing becomes front page news; no arrest is ever made.

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

A group of children find footprints in the Siberian snow, do they belong to a Yeti?

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.

Step inside hidden areas where history was steered in secret, from Churchill's wartime bunker, complete with a direct line to FDR concealed inside his private bathroom, to a Soviet weapons base in the desert exposed only by a daring U-2 spy mission.

A group of children find footprints in the Siberian snow, do they belong to a Yeti?

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.

Is a picture taken in the 1890's the first Bigfoot photo ever? Is a recording captured in Pennsylvania a genuine Bigfoot howl? Why are UFOs drawn to Powerlines? Did a photographer inadvertently capture a UFO at the coronation of King Charles.

A security camera in Youngstown captures a strange creature in Ohio; a Proof viewer may have filmed the infamous Black Knight satellite; the source of a sound so loud it could be heard across the Equatorial Pacific Ocean.

Reports of a strange spinning vortex with a bright white center in the skies over Oklahoma; a sealed video in the Vatican archives allegedly shows a real case of demonic possession.

B.J. tries to organize a present-day, stateside gathering of 4077th families.

A clumsy soldier lifts the 4077th's spirits, but Col. Potter remains down in the dumps.

A ghostly salvage in an abandoned hospital brings some unusual finds; the salvage team discovers a surprising collection of vintage items during the demolition of a 50's era subdivision property.

Mike and Avery recover a valuable abandoned Volkswagen; threats from the authorities force Mike to make a surprising decision about the future of his Field of Dreams.

Matt's team is hunting 1950s Volkswagens by any means necessary, even scaling a ravine or craning over treetops.

A ghostly salvage in an abandoned hospital brings some unusual finds; the salvage team discovers a surprising collection of vintage items during the demolition of a 50's era subdivision property.

Mike and Avery recover a valuable abandoned Volkswagen; threats from the authorities force Mike to make a surprising decision about the future of his Field of Dreams.

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.

A congressional aide on a fact-finding tour visits the 4077th.

Hawkeye wants to heal a wounded Korean woman whom an ROK officer wants to question.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

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

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

Milton Bradley creates one of America's first board games, but the Parker brothers threaten Bradley's reign.

A congressional aide on a fact-finding tour visits the 4077th.

Hawkeye wants to heal a wounded Korean woman whom an ROK officer wants to question.

From moon landings and movie props to space junk and sci-fi treasures, Mike we unveil the most finds from the Final Frontier-space.

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.