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?

From ancient sites like Stonehenge to the crop circle phenomenon and modern-day UFO sightings, Great Britain is a place of mysteries; exploring if throughout history this island has been a destination for extraterrestrial visitors.

The quest for immortality has captivated and confounded people for thousands of years, from the healing powers of the Holy Grail used by Jesus at the Last Supper, to the elusive Fountain of Youth and the storied philosopher's stone.

It's one of life's most confounding mysteries: what happens to people after they die; from heaven and hell to resurrection and reincarnation, exploring the remarkable possibilities of life after death.

For millennia, plagues, curses, droughts and the violent destruction of cities have been blamed on the wrath of angry gods; exploring if these divine punishments were mere myth, or there is any proof they are based on real events.

Newscaster Clete Roberts returns to the 4077th to update Korean War conditions.

Newscaster Clete Roberts returns to the 4077th to update Korean War conditions.

While Kevin works on his breakwater at Hook Bay, Erik gets to work on the Pipe Dream; the mill hosts a group of high school students interested in learning how the business works.

Mike restores a 1968 Beaumont for a charity auction, but scrambles to save the build and the fundraiser when his budget is pulled out from under him; Avery steals a Rust Bros client with a German-made Unimog, putting his friendship with Mike at risk.

The expedition continues as Adam and Kru's discovery of a hidden mine sends the entire team back, deep into the British Columbia wilderness; they're equipped for adventure and on a mission for gold.

While Kevin works on his breakwater at Hook Bay, Erik gets to work on the Pipe Dream; the mill hosts a group of high school students interested in learning how the business works.

Mike restores a 1968 Beaumont for a charity auction, but scrambles to save the build and the fundraiser when his budget is pulled out from under him; Avery steals a Rust Bros client with a German-made Unimog, putting his friendship with Mike at risk.

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

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

Turned down for a future position at home, Charles is so irate he refuses to talk to anyone in the unit.

The oppressive Korean heat gets to everyone, especially Klinger.

Beneath the earth, frozen in the tundra, and hidden in the depths of the sea, lie some of the deadliest discoveries of all time; from an asteroid impact that nearly ended life on Earth to creatures once thought to be myths, and even a killer virus thawed from the ice, these shocking finds reveal the dark side of discovery.

Does a Connecticut man summon a UFO? Are the mysterious lights over the pyramids of Giza visitors from another world? Can an Okla. man make contact with aliens?

Is a mysterious underwater force stranding deep-sea fish in California?; did a fisherman capture a giant sea serpent on camera?; could the latest Loch Ness Monster footage be the most convincing in years?

Did a camper in Florida film the legendary Bigfoot?; could dinosaurs be stalking suburban backyards?; was a goblin really caught on a Kentucky security camera?; Tony Harris and his team analyze compelling footage of strange creatures.

Turned down for a future position at home, Charles is so irate he refuses to talk to anyone in the unit.

The oppressive Korean heat gets to everyone, especially Klinger.

Beneath the earth, frozen in the tundra, and hidden in the depths of the sea, lie some of the deadliest discoveries of all time; from an asteroid impact that nearly ended life on Earth to creatures once thought to be myths, and even a killer virus thawed from the ice, these shocking finds reveal the dark side of discovery.

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?

From ancient sites like Stonehenge to the crop circle phenomenon and modern-day UFO sightings, Great Britain is a place of mysteries; exploring if throughout history this island has been a destination for extraterrestrial visitors.

Are the swarms of drones seen over New Jersey friend or foe? A strange green creature is found in Taiwan. Could it be an alien? Why are hundreds of fish spinning themselves to death? A camera captures sheets that move by themselves. Is it a ghost getting out of bed? Tony Harris and his team of experts dive into these claims to find the truth.

From James Bond's legendary submarine car uncovered in a storage unit, to a rock-and-roll guitar with a past as loud as its sound, and locomotives resting side by side on the ocean floor, these heavy-metal marvels prove history's strongest secrets can't stay buried.

Beneath the earth, frozen in the tundra, and hidden in the depths of the sea, lie some of the deadliest discoveries of all time; from an asteroid impact that nearly ended life on Earth to creatures once thought to be myths, and even a killer virus thawed from the ice, these shocking finds reveal the dark side of discovery.

Are the swarms of drones seen over New Jersey friend or foe? A strange green creature is found in Taiwan. Could it be an alien? Why are hundreds of fish spinning themselves to death? A camera captures sheets that move by themselves. Is it a ghost getting out of bed? Tony Harris and his team of experts dive into these claims to find the truth.

From James Bond's legendary submarine car uncovered in a storage unit, to a rock-and-roll guitar with a past as loud as its sound, and locomotives resting side by side on the ocean floor, these heavy-metal marvels prove history's strongest secrets can't stay buried.

Does a Connecticut man summon a UFO? Are the mysterious lights over the pyramids of Giza visitors from another world? Can an Okla. man make contact with aliens?

Is a mysterious underwater force stranding deep-sea fish in California?; did a fisherman capture a giant sea serpent on camera?; could the latest Loch Ness Monster footage be the most convincing in years?

Did a camper in Florida film the legendary Bigfoot?; could dinosaurs be stalking suburban backyards?; was a goblin really caught on a Kentucky security camera?; Tony Harris and his team analyze compelling footage of strange creatures.

Turned down for a future position at home, Charles is so irate he refuses to talk to anyone in the unit.

The oppressive Korean heat gets to everyone, especially Klinger.

Kevin is on a "shopping spree" getting old parts he can use to build his huge new saw at the mill, while Jake works on the Seacrest and Erik plugs away at the Pipe Dream.

Mike converts a 1957 GMC truck to run on alcohol for a truck-obsessed teenage girl; Avery goes the extra mile, finishing the Unimog for its hard-to-please owner.

What secrets lurk at the bottom of Harrison Lake?; Adam and Kru follow the trail of a prospector's coin to a deserted island with a rich history, both above and below the water.

Kevin is on a "shopping spree" getting old parts he can use to build his huge new saw at the mill, while Jake works on the Seacrest and Erik plugs away at the Pipe Dream.

Mike converts a 1957 GMC truck to run on alcohol for a truck-obsessed teenage girl; Avery goes the extra mile, finishing the Unimog for its hard-to-please owner.

Packaged sweets at JFK Airport; a Dutch visitor travels stateside; mistaken identity for a traveler in Washington State; party girls' plans are deflated.

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

A strong windstorm affects the members of the 4077th in various ways.

Charles assumes heroic proportions after reviving a dying patient with heart massage.

From wild devices that powered down before booting up to groundbreaking innovations that transformed society, we look at tech creations that broke the bank and changed the course of modern history.

From a first-century Roman emperor who created an early version of the whoopee cushion to modern materials that emulate human body fluids, gross equals big bucks for toymakers; examining innovative toys designed to shock.

The hundreds of trick and gag toys produced by entrepreneurs S.S. Adams and H. Fishlove that have that entertained and annoyed Americans over six decades, and how many are still being sold.

Two chance discoveries in the 1950s turn mundane industrial materials into legendary toys; Etch A Sketch and Play-Doh will rake in billions for decades to come, but not everyone will reap the rewards.

As the post-war baby boom creates unprecedented demand for toys, Ruth Handler turns her greatest gamble into the most recognizable toy in the world.

A strong windstorm affects the members of the 4077th in various ways.

Charles assumes heroic proportions after reviving a dying patient with heart massage.

From wild devices that powered down before booting up to groundbreaking innovations that transformed society, we look at tech creations that broke the bank and changed the course of modern history.

From James Bond's legendary submarine car uncovered in a storage unit, to a rock-and-roll guitar with a past as loud as its sound, and locomotives resting side by side on the ocean floor, these heavy-metal marvels prove history's strongest secrets can't stay buried.

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

Mike and Danielle pick a kindred spirit in Texas while Robbie and Jersey hit a mancave honeyhole in Ohio.

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.

As the post-war baby boom creates unprecedented demand for toys, Ruth Handler turns her greatest gamble into the most recognizable toy in the world.

Mike and Danielle pick a kindred spirit in Texas while Robbie and Jersey hit a mancave honeyhole in Ohio.

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 wild devices that powered down before booting up to groundbreaking innovations that transformed society, we look at tech creations that broke the bank and changed the course of modern history.

Two chance discoveries in the 1950s turn mundane industrial materials into legendary toys; Etch A Sketch and Play-Doh will rake in billions for decades to come, but not everyone will reap the rewards.

As the post-war baby boom creates unprecedented demand for toys, Ruth Handler turns her greatest gamble into the most recognizable toy in the world.

A strong windstorm affects the members of the 4077th in various ways.

Charles assumes heroic proportions after reviving a dying patient with heart massage.

With the battle for logs taking a toll, Kevin keeps pursuing his plans to build the Pipe Dream and a new saw at the mill; millhand Simon's plans for a logger sports day get wildly out of hand once Kevin steps in to help.

Mike sells a Willys Jeep to custom car wizard James West, but the price will be determined by the winner of a drag race; the challenge puts pressure on both shops to produce competition-worthy trucks.

Legends collide when Adam leads the team 200 km east to B.C.'s Similkameen Valley following a lifelong legend hunter and his quest to rewrite history; Taylor and Kru visit a local knowledge keeper whose path to gold leads to a surprising discovery.

With the battle for logs taking a toll, Kevin keeps pursuing his plans to build the Pipe Dream and a new saw at the mill; millhand Simon's plans for a logger sports day get wildly out of hand once Kevin steps in to help.

Mike sells a Willys Jeep to custom car wizard James West, but the price will be determined by the winner of a drag race; the challenge puts pressure on both shops to produce competition-worthy trucks.

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.

An auto theft arrest in Detroit; dozens of vials in the JFK Mail Facility; an American traveler has reptiles; a traveler in New York shows signs of smuggling; a family reunites in Detroit.

Charles becomes the most unpopular man in camp when he receives a winterized polar suit from his parents.

The experiences of being wounded, flown to the 4077th, operated on and treated are seen through a soldier's eyes.

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.

A pilot activates his ejector seat at the last second during a rocky landing; a motorist tries to escape a forest full of falling trees; the Hindenburg, the pride of Nazi Germany, explodes in flames while flying over New Jersey in 1937.

Theo Wilson finds himself aboard the world's most luxurious airship, the Hindenburg, where he must solve the mystery of what leads to its fiery fall from the sky.

Theo Wilson time travels to 1865 and immerses himself in the events that lead John Wilkes Booth to hatch a plan to kill President Abraham Lincoln.

Theo Wilson time-travels back to 1889 to the bucolic river shores of Johnstown, Pa., where the biggest flood in U.S. history is about to be unleashed.

Theo Wilson finds himself in the lair of America's first famous serial killer, H.H. Holmes; Theo follows Holmes' dark road from con man to the owner of a fiendishly engineered murder castle.

Charles becomes the most unpopular man in camp when he receives a winterized polar suit from his parents.

The experiences of being wounded, flown to the 4077th, operated on and treated are seen through a soldier's eyes.

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.

Mike and Danielle pick a kindred spirit in Texas while Robbie and Jersey hit a mancave honeyhole in Ohio.

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.

Rick, Corey, and Chum get locked and loaded with weapons expert Alex Cranmer to take an explosive look back at some of the highest caliber deals they've ever made, both in the pawn shop and out on the gun range. They remember shots they took on pistols, cannons, muskets, flamethrowers, and even a WWII tank. When it comes to firepower, the Pawn Stars always get the most bang for their buck.

Jacob and Little Willie hunt a legendary cannibal gator known as Bone Crusher. Bruce and Anna hide their lines to stay one step ahead of poachers, forcing Bruce to rely on his uncanny swamp memory to find them again. Troy and Pickle turn an unexpected encounter with a party barge into a heartfelt Veterans Day on the water. Chase leans on high-tech sonar to track down deep-water monsters. And deep in the flooded woods, Ronnie and Timmy gamble everything on a brutal pirogue mission.

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.

Rick, Corey, and Chum get locked and loaded with weapons expert Alex Cranmer to take an explosive look back at some of the highest caliber deals they've ever made, both in the pawn shop and out on the gun range. They remember shots they took on pistols, cannons, muskets, flamethrowers, and even a WWII tank. When it comes to firepower, the Pawn Stars always get the most bang for their buck.

Jacob and Little Willie hunt a legendary cannibal gator known as Bone Crusher. Bruce and Anna hide their lines to stay one step ahead of poachers, forcing Bruce to rely on his uncanny swamp memory to find them again. Troy and Pickle turn an unexpected encounter with a party barge into a heartfelt Veterans Day on the water. Chase leans on high-tech sonar to track down deep-water monsters. And deep in the flooded woods, Ronnie and Timmy gamble everything on a brutal pirogue mission.

A pilot activates his ejector seat at the last second during a rocky landing; a motorist tries to escape a forest full of falling trees; the Hindenburg, the pride of Nazi Germany, explodes in flames while flying over New Jersey in 1937.

Theo Wilson finds himself aboard the world's most luxurious airship, the Hindenburg, where he must solve the mystery of what leads to its fiery fall from the sky.

Theo Wilson time travels to 1865 and immerses himself in the events that lead John Wilkes Booth to hatch a plan to kill President Abraham Lincoln.

Theo Wilson time-travels back to 1889 to the bucolic river shores of Johnstown, Pa., where the biggest flood in U.S. history is about to be unleashed.

Theo Wilson finds himself in the lair of America's first famous serial killer, H.H. Holmes; Theo follows Holmes' dark road from con man to the owner of a fiendishly engineered murder castle.

Charles becomes the most unpopular man in camp when he receives a winterized polar suit from his parents.

The experiences of being wounded, flown to the 4077th, operated on and treated are seen through a soldier's eyes.

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

Rust Valley rivals face off in the Shop Truck Challenge; Mike struggles to restore a 1971 Chevy Blazer for a wedding day surprise; Avery's plan to repurpose a military truck for music festivals hits a sour note.

After numerous failed attempts in the B.C. backwoods, European gold hunter Anton Lennartz and his team return to the Pitt to find the gold and claim the glory; Adam and Daryl track the trio with a plan of their own.

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

Rust Valley rivals face off in the Shop Truck Challenge; Mike struggles to restore a 1971 Chevy Blazer for a wedding day surprise; Avery's plan to repurpose a military truck for music festivals hits a sour note.

JFK Airport officials look for drugs in backpacks; a driver in Washington arrives in someone else's vehicle; a Detroit citizen takes a wrong turn.

The canine unit uncovers trouble in Michigan; blood-stained baggage in Detroit; officers are suspicious of a Canadian citizen.

Hawkeye and B.J. discover Charles living the life of Riley due to the attentions of his menially paid Korean servant.

Heavy casualties nearly exhaust the unit's supply of Pentothal.

The world is full of strange and mind-bending places, but some take the cake. Explore an island ruled by deadly predators, a Florida town obsessed with the wildest circus performers, or a mysterious paranormal hotspot that's a magnet for UFOs, strange sightings, and baffling disappearances. These are the weirdest corners of the planet you have to see to believe.

Humanity has launched satellites into outer space and submarines to the ocean floor, but the ground below Earth's surface remains shrouded in mystery.

The possibility of other intelligent species existing in the universe; the alleged evidence of these extraterrestrials hiding in plain sight; UFO sightings and strange structures on Mars.

Throughout history, there have been many prophecies and figures like Liu Bowen and the Oracle of Delphi, who claimed to see the future, were essential influencers to powerful nations. But is predicting the future really something to inherit.

Hawkeye and B.J. discover Charles living the life of Riley due to the attentions of his menially paid Korean servant.

Heavy casualties nearly exhaust the unit's supply of Pentothal.

The world is full of strange and mind-bending places, but some take the cake. Explore an island ruled by deadly predators, a Florida town obsessed with the wildest circus performers, or a mysterious paranormal hotspot that's a magnet for UFOs, strange sightings, and baffling disappearances. These are the weirdest corners of the planet you have to see to believe.

Are UFOs behind bizarre scorch marks found in a farmer's field?; could a massive creature be lurking in a Turkish lake?; s there a superhuman that can withstand heat of nearly six thousand degrees?

Throughout history, there have been many prophecies and figures like Liu Bowen and the Oracle of Delphi, who claimed to see the future, were essential influencers to powerful nations. But is predicting the future really something to inherit.

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.

A drilling accident tears open the Earth and unleashes a fire pit known as the "Gates of Hell"; a routine flight turns harrowing when the pilot gets sucked out of the cockpit midair; a ship mishap sinks 4,000 luxury cars into the Atlantic.

The world is full of strange and mind-bending places, but some take the cake. Explore an island ruled by deadly predators, a Florida town obsessed with the wildest circus performers, or a mysterious paranormal hotspot that's a magnet for UFOs, strange sightings, and baffling disappearances. These are the weirdest corners of the planet you have to see to believe.

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.

A drilling accident tears open the Earth and unleashes a fire pit known as the "Gates of Hell"; a routine flight turns harrowing when the pilot gets sucked out of the cockpit midair; a ship mishap sinks 4,000 luxury cars into the Atlantic.

Humanity has launched satellites into outer space and submarines to the ocean floor, but the ground below Earth's surface remains shrouded in mystery.

The possibility of other intelligent species existing in the universe; the alleged evidence of these extraterrestrials hiding in plain sight; UFO sightings and strange structures on Mars.

Throughout history, there have been many prophecies and figures like Liu Bowen and the Oracle of Delphi, who claimed to see the future, were essential influencers to powerful nations. But is predicting the future really something to inherit.

Hawkeye and B.J. discover Charles living the life of Riley due to the attentions of his menially paid Korean servant.

Heavy casualties nearly exhaust the unit's supply of Pentothal.

Cory races to turn two waterbombers into trans-Atlantic aircraft for the journey to Turkey.

Joe loses it after a screw-up; Devon's job offer; a Brit and his dog start a new life.

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.

Cory races to turn two waterbombers into trans-Atlantic aircraft for the journey to Turkey.

Joe loses it after a screw-up; Devon's job offer; a Brit and his dog start a new life.

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

Three smiths return for a chance at becoming a two-time winner and having their name forged in history.

Three smiths return for a chance to become a two-time winner and have their name forged in history; but to join this elite club, they must overcome one of the most difficult challenges ever.

Doug Marcaida, Forged in Fire judge and edged weapons specialist, reveals his secrets of the forge in this special inside look; for the first time, Doug will disclose how the competition's most notorious tests are created.

Ben Abbott, "Forged in Fire" competitor turned judge, reveals his secrets of the forge in this special inside look; for the first time, Ben will disclose how he's been able to stay undefeated.

Four blade smiths turn snowflake canister Damascus into a deadly Yakut knife in freezing temperatures; after brutal testing, two competitors head home to tackle another Siberian staple.

The competition heats up when four competitors must use a metal never before seen in Forged in Fire history: copper; known for its tight forging window, the smiths must pay attention to their heat or risk melting their blades.

Four smiths must combine two of the most difficult techniques in the forge to make a blade: Damascus and Go Mai; then, after an intense round of testing, two competitors head home to build an intricate 16th century side sword.

Four smiths put their design skills to the test when they are tasked with pimping out a machete; then, the two smiths with the most blinged out blades head back to their home forges to build history's original pimped out weapon.

Four smiths must sift through a pile of junk in order to make a signature damascus blade; after a couple of rounds, two smiths head back to their home forge to recreate a Broadsword featuring a snake-shaped grind.

Digging deep inside the vault and revisit some special competitions over the years: from Gladiators and Greeks to Horror and holidays.

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

Three smiths return for a chance at becoming a two-time winner and having their name forged in history.

Three smiths return for a chance to become a two-time winner and have their name forged in history; but to join this elite club, they must overcome one of the most difficult challenges ever.

Doug Marcaida, Forged in Fire judge and edged weapons specialist, reveals his secrets of the forge in this special inside look; for the first time, Doug will disclose how the competition's most notorious tests are created.

Ben Abbott, "Forged in Fire" competitor turned judge, reveals his secrets of the forge in this special inside look; for the first time, Ben will disclose how he's been able to stay undefeated.

Four blade smiths turn snowflake canister Damascus into a deadly Yakut knife in freezing temperatures; after brutal testing, two competitors head home to tackle another Siberian staple.

The competition heats up when four competitors must use a metal never before seen in Forged in Fire history: copper; known for its tight forging window, the smiths must pay attention to their heat or risk melting their blades.

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

Connor's out to avenge the Rust Bros' failure at last year's demolition derby, but gets more than he expected when Avery and Shafin enter a car of their own; Mike restores a 1965 GMC van with an emotional past.

Mike bites off more than he can chew when he helps out with a 1938 Buick Special for an employee, while also racing to finish a 1965 GMC Handi-Van for clients hoping to make up for past mistakes; Mike and Avery train for a local dance competition.

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

Connor's out to avenge the Rust Bros' failure at last year's demolition derby, but gets more than he expected when Avery and Shafin enter a car of their own; Mike restores a 1965 GMC van with an emotional past.

Mike bites off more than he can chew when he helps out with a 1938 Buick Special for an employee, while also racing to finish a 1965 GMC Handi-Van for clients hoping to make up for past mistakes; Mike and Avery train for a local dance competition.

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 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.

A drilling accident tears open the Earth and unleashes a fire pit known as the "Gates of Hell"; a routine flight turns harrowing when the pilot gets sucked out of the cockpit midair; a ship mishap sinks 4,000 luxury cars into the Atlantic.

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

From James Bond's legendary submarine car uncovered in a storage unit, to a rock-and-roll guitar with a past as loud as its sound, and locomotives resting side by side on the ocean floor, these heavy-metal marvels prove history's strongest secrets can't stay buried.

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 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?

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

A drilling accident tears open the Earth and unleashes a fire pit known as the "Gates of Hell"; a routine flight turns harrowing when the pilot gets sucked out of the cockpit midair; a ship mishap sinks 4,000 luxury cars into the Atlantic.

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.

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 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.