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.

Teetering between the apocalyptic and absurd, declassified records will unveil the top secret weapons programs that attempted to bring down the world, uncovering the Soviet atomic test that shook the Earth with a force 1,500 times more powerful than the Hiroshima bomb, the CIA's creation of a gun that fired a shellfish-harvested toxin, and the Allies' bizarre secret plan to end World War II by feminizing Hitler.

While the team races against the impending winter to get into the Solution Channel and finally retrieve the treasure on Oak Island, Rick and members of the fellowship make new connections 4,000 miles away in Malta.

John Dillinger's life consisted of brazen bank robberies across the country, but his death remains shrouded in mystery; what really happened to John Dillinger?

Monkey glands for immortality, hypnotized assassins and a brain-linked cyborg couple; investigating some of the strangest experiments on record.

When is Mission: Impossible more than just a movie? From the gaspingly record-shattering depths submarine divers have plunged to tap a secret Soviet communication line to the Special Ops team of suicidal soldiers sent to hand-deploy A-bombs in enemy territory, newly uncensored evidence will reveal the lengths that the few and the elite have gone to within the most hostile lands, all in the name of completing the mission.

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.

The re-creation of a Bugatti proves to be a nightmare; a wrench is thrown into the delivery of a 1963 classic.

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.

André goes to Ontario to lead his first build in six years; Beat has to collaborate; Peter is determined to get a vacation out of Bryan Jr.

While demolishing on an old farmhouse, the Priestly team uncovers a hidden historic treasure.

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.

An angry businessman hides the real reason for his hostility; officers try to process some unusual Mexican migrants.

Officers drill an American oil worker with a shady past; a British traveler's proposed reunion with a girlfriend could be cut short.

Hawkeye is overcome by a mysterious bout of nonstop sneezing.

Hawkeye must tell a wounded soldier that tests indicate he has chronic leukemia and can't give blood to his best buddy.

Callen and the NCIS: LA team confront their vengeful adversary, the Chameleon, when an undercover case ignites a deadly mind game orchestrated by the criminal mastermind.

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

The gruesome murder of a young beauty goes unsolved for decades; there's a long line of suspects, each more mysterious than the next.

John Dillinger's life consisted of brazen bank robberies across the country, but his death remains shrouded in mystery; what really happened to John Dillinger?

Hawkeye is overcome by a mysterious bout of nonstop sneezing.

Hawkeye must tell a wounded soldier that tests indicate he has chronic leukemia and can't give blood to his best buddy.

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

Teetering between the apocalyptic and absurd, declassified records will unveil the top secret weapons programs that attempted to bring down the world, uncovering the Soviet atomic test that shook the Earth with a force 1,500 times more powerful than the Hiroshima bomb, the CIA's creation of a gun that fired a shellfish-harvested toxin, and the Allies' bizarre secret plan to end World War II by feminizing Hitler.

While the team races against the impending winter to get into the Solution Channel and finally retrieve the treasure on Oak Island, Rick and members of the fellowship make new connections 4,000 miles away in Malta.

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

Legendary beasts are believed to roam the earth and the seas, terrorizing, killing, and even possessing humans. But are these creatures merely metaphors or is there proof they've actually been unleashed to wreak havoc?

John Dillinger's life consisted of brazen bank robberies across the country, but his death remains shrouded in mystery; what really happened to John Dillinger?

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

Legendary beasts are believed to roam the earth and the seas, terrorizing, killing, and even possessing humans. But are these creatures merely metaphors or is there proof they've actually been unleashed to wreak havoc?

The gruesome murder of a young beauty goes unsolved for decades; there's a long line of suspects, each more mysterious than the next.

John Dillinger's life consisted of brazen bank robberies across the country, but his death remains shrouded in mystery; what really happened to John Dillinger?

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

Callen and the NCIS: LA team confront their vengeful adversary, the Chameleon, when an undercover case ignites a deadly mind game orchestrated by the criminal mastermind.

Cartoon car called Mr. Beep rolls in on life support; Jay burns out on the Bugatti; exploding engines hinder Mustang deadline.

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.

Bryan Sr. resurrects an ancient crane dubbed "Rust Bucket" to complete a remote fishing cabin; Beat struggles with two huge projects competing for time and square footage on the work yard.

The Salvage team explore the historic mining town of Cobalt where they uncover a trove of memorabilia, including a massive 1915 Woolworth's sign and vintage jukeboxes.

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 sloshed snowboarder causes trouble at the airport; a pair of packages add up to a deadly surprise.

A bad-tempered drill worker returning home from Japan goes one step too far with officers; a Californian woman hides something in her child's stroller.

A letter from Radar brightens the colonel's day until Klinger accidentally breaks his glasses.

Charles becomes obsessed with death following a sniper attack.

The L.A. team is drawn into a deadly mind game against a master criminal motivated by Revenge.

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

The latest video leak from the Department of Homeland Security; one of the world's most respected Bigfoot researchers; anachronistic works of art; a lost, sunken city off the coast of Louisiana.

A strange worm-shaped object is seen in the sky in a video tweeted by a Proof viewer; an ROV finds the remains of a massive skeleton 825 metres below the surface of the Mediterranean; a building appears to shrink as a family gets closer to it.

A letter from Radar brightens the colonel's day until Klinger accidentally breaks his glasses.

Charles becomes obsessed with death following a sniper attack.

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

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

Legendary beasts are believed to roam the earth and the seas, terrorizing, killing, and even possessing humans. But are these creatures merely metaphors or is there proof they've actually been unleashed to wreak havoc?

Discovering a deadly poison lab operated by the Soviet Union's infamous "Doctor Death," a vast nuclear missile site buried beneath the Greenland ice sheet, and the U.S. government's doomsday bunker concealed inside a hollowed-out mountain.

A strange worm-shaped object is seen in the sky in a video tweeted by a Proof viewer; an ROV finds the remains of a massive skeleton 825 metres below the surface of the Mediterranean; a building appears to shrink as a family gets closer to it.

The latest video leak from the Department of Homeland Security; one of the world's most respected Bigfoot researchers; anachronistic works of art; a lost, sunken city off the coast of Louisiana.

Discovering a deadly poison lab operated by the Soviet Union's infamous "Doctor Death," a vast nuclear missile site buried beneath the Greenland ice sheet, and the U.S. government's doomsday bunker concealed inside a hollowed-out mountain.

A strange worm-shaped object is seen in the sky in a video tweeted by a Proof viewer; an ROV finds the remains of a massive skeleton 825 metres below the surface of the Mediterranean; a building appears to shrink as a family gets closer to it.

Gustav the legendary man-eating crocodile; glowing lights spotted in the waters of Mexico; striking footage emerges out of Phoenix of a pair of dogs who act like they just saw a ghost.

The latest video leak from the Department of Homeland Security; one of the world's most respected Bigfoot researchers; anachronistic works of art; a lost, sunken city off the coast of Louisiana.

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

The L.A. team is drawn into a deadly mind game against a master criminal motivated by Revenge.

Paul has passport problems after David invites him to an elite-car auction in the United States; a 1959 Cadillac has more problems than expected.

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.

Tensions run high when Andre muscles in on Sam's build in Kansas; winter gales put a chill on Peter's project for a Russian client.

Three generations of Priestly's travel to a remote island to demolish a historic lodge; Ted discovers a surprising collection of valuable 1930's paraphernalia.

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.

A Korean bride-to-be tries to enter Canada as a tourist; the Marine Enforcement Team tackles a massive Japanese freighter carrying an illegal passenger.

Officers suspect an IT consultant has arrived for more than just a holiday; a surfer returns from Southeast Asia with a strange souvenir.

The sudden illness of a USO singer brings the touring troupe to the 4077th.

The ailing USO singer undergoes emergency surgery as the troupe entertains the camp.

Following Callen's public shooting of the Chameleon, all is not well with the NCIS: LA team, as Callen is placed on suspension and Hetty adjusts to retired life.

After a prison transport van overturns, Hondo and the team hunt down three female fugitives, including a serial killer on the verge of a rampage; with Annie's return to work, Deacon struggles to maintain a work-life balance.

Postwar peace and prosperity reveals 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.

The first convenience store is born; with innovations like late hours, to-go coffee and America's beloved slushy drink, it rises into a chain with more locations than any other store or restaurant in the world.

The sudden illness of a USO singer brings the touring troupe to the 4077th.

The ailing USO singer undergoes emergency surgery as the troupe entertains the camp.

After a prison transport van overturns, Hondo and the team hunt down three female fugitives, including a serial killer on the verge of a rampage; with Annie's return to work, Deacon struggles to maintain a work-life balance.

Postwar peace and prosperity reveals 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.

Discovering a deadly poison lab operated by the Soviet Union's infamous "Doctor Death," a vast nuclear missile site buried beneath the Greenland ice sheet, and the U.S. government's doomsday bunker concealed inside a hollowed-out mountain.

Chasing deals from the Sin City, Rick flies through the desert in a restored Piper plane while Corey spots a killer Mustang for sale.

Early American malls had no food court, until a cinnamon bun, a pretzel, and a panda all move in to create three of the world's most iconic food brands and transform the American Mall.

The first convenience store is born; with innovations like late hours, to-go coffee and America's beloved slushy drink, it rises into a chain with more locations than any other store or restaurant in the world.

Chasing deals from the Sin City, Rick flies through the desert in a restored Piper plane while Corey spots a killer Mustang for sale.

Early American malls had no food court, until a cinnamon bun, a pretzel, and a panda all move in to create three of the world's most iconic food brands and transform the American Mall.

Postwar peace and prosperity reveals 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.

Chasing deals from the Sin City, Rick flies through the desert in a restored Piper plane while Corey spots a killer Mustang for sale.

After a prison transport van overturns, Hondo and the team hunt down three female fugitives, including a serial killer on the verge of a rampage; with Annie's return to work, Deacon struggles to maintain a work-life balance.

Following Callen's public shooting of the Chameleon, all is not well with the NCIS: LA team, as Callen is placed on suspension and Hetty adjusts to retired life.

Jay clashes with the new guy; a 1972 Plymouth Road Runner GTX arrives at the shop; a one-of-kind Swiss car goes up for auction.

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

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

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.

The Inland Enforcement Team track down an alleged German sex offender; a detector dog sniffs out trouble in an unclaimed suitcase from Dubai.

A Canadian wanted in Alberta is stopped en route to Ecuador; a parcel of baby food contains surprising ingredients.

The problems of three wounded soldiers disrupt the lives of those around them.

When a general's emissary is sent to the 4077th to check it out, rumors about the visitor's real purpose run rampant.

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

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

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

The problems of three wounded soldiers disrupt the lives of those around them.

When a general's emissary is sent to the 4077th to check it out, rumors about the visitor's real purpose run rampant.

After the shocking shooting of a member of 20-Squad, Hondo and the team launch a citywide manhunt for the robbery crew responsible; Deacon's plans for his future hit a snag; Powell and Alfaro clash over a tricky issue.

Legendary beasts are believed to roam the earth and the seas, terrorizing, killing, and even possessing humans. But are these creatures merely metaphors or is there proof they've actually been unleashed to wreak havoc?

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.

King of the Swamp Troy Landry teams up with a local archeologist and deckhand Pickle to search for remains of an ancient Native American civilization in the Louisiana swamps; the team discovers evidence of an ancient and mysterious people.

Steve investigates the 1972 disappearance of the Begich/Boggs flight, a case that sparked the largest search in Alaska's history.

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.

King of the Swamp Troy Landry teams up with a local archeologist and deckhand Pickle to search for remains of an ancient Native American civilization in the Louisiana swamps; the team discovers evidence of an ancient and mysterious people.

Steve investigates the 1972 disappearance of the Begich/Boggs flight, a case that sparked the largest search in Alaska's history.

Legendary beasts are believed to roam the earth and the seas, terrorizing, killing, and even possessing humans. But are these creatures merely metaphors or is there proof they've actually been unleashed to wreak havoc?

King of the Swamp Troy Landry teams up with a local archeologist and deckhand Pickle to search for remains of an ancient Native American civilization in the Louisiana swamps; the team discovers evidence of an ancient and mysterious people.

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

The Inland Enforcement Team track down an alleged German sex offender; a detector dog sniffs out trouble in an unclaimed suitcase from Dubai.

Guild owner David orders rivals Jay and Dave to join forces on a vehicle from a horror film; Paul risks his son's education fund on two cars.

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.

Joel hopes a contract for four cabins in Michigan will lead to an order for 16 more; Andre's kitchen renovation becomes more complicated than expected.

Ted and Justin travel to Market Village Mall in Markham, Ontario, where they are tasked with carefully unlocking mysterious vault doors while the demolition team begins tear down.

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

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

Hawkeye's letter begs Truman to stop the war.

Col. Potter orders Klinger to tutor him for driving school on a night Klinger has set aside for a big poker game.

A drone strike on a bomb-making compound in Afghanistan leads to the discovery of a retired Marine's remains.

When the SWAT team faces off with a family of doomsday preppers, Deacon finds himself at the center of the storm; Tan clashes with a reporter covering the situation; Powell grapples with meeting the child she gave up for adoption 18 years ago.

While modern science has stopped many dangerous viruses and bacteria in their tracks, there is a concern that contagious germs could be traveling through the vacuum of space.

In the early 1900s, Edgar Cayce, a modern-day prophet from the hills of Kentucky, becomes a worldwide sensation; he claims to receive visions of the past and future, he heals the sick, and alleges to have encounters with otherworldly beings.

Hawkeye's letter begs Truman to stop the war.

Col. Potter orders Klinger to tutor him for driving school on a night Klinger has set aside for a big poker game.

When the SWAT team faces off with a family of doomsday preppers, Deacon finds himself at the center of the storm; Tan clashes with a reporter covering the situation; Powell grapples with meeting the child she gave up for adoption 18 years ago.

The Aztecs have built a powerful and feared empire and they have claimed that they were guided by a pantheon of more than a thousand gods who came to Earth from different parts of the universe.

While modern science has stopped many dangerous viruses and bacteria in their tracks, there is a concern that contagious germs could be traveling through the vacuum of space.

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

In the early 1900s, Edgar Cayce, a modern-day prophet from the hills of Kentucky, becomes a worldwide sensation; he claims to receive visions of the past and future, he heals the sick, and alleges to have encounters with otherworldly beings.

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

While modern science has stopped many dangerous viruses and bacteria in their tracks, there is a concern that contagious germs could be traveling through the vacuum of space.

In the early 1900s, Edgar Cayce, a modern-day prophet from the hills of Kentucky, becomes a worldwide sensation; he claims to receive visions of the past and future, he heals the sick, and alleges to have encounters with otherworldly beings.

When the SWAT team faces off with a family of doomsday preppers, Deacon finds himself at the center of the storm; Tan clashes with a reporter covering the situation; Powell grapples with meeting the child she gave up for adoption 18 years ago.

A drone strike on a bomb-making compound in Afghanistan leads to the discovery of a retired Marine's remains.

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.

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.

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

Mike 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.

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.

A teacher turns restaurateur invents America's popular cookie which leads to a battle of food giants, and one of the packaged cookies.

A cereal executive's bold idea to finance the "Willy Wonka and the Chocolate Factory" movie will kick-off a candy revolution that produces some of the most iconic, imaginative confections in history.

The Pawn Stars find their sweet tooth when a 1940s Stoner vintage candy machine makes its way into the shop.

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

A teacher turns restaurateur invents America's popular cookie which leads to a battle of food giants, and one of the packaged cookies.

As we make plans to travel beyond the Moon to new worlds, how are we preparing to become human extraterrestrials? Just how will we survive this trip into the unknown? Will we be able to thrive once we get to our next galactic destination? And what will we do if we make contact with intelligent life?

Enormous, megalithic structures of mysterious origins; a vast underground complex containing the remains of what some believe to be otherworldly beings; the ancient mysteries that exist on the islands of Malta could be connected to alien visitation.

Analyzing if a Korean soldier captured during D-Day fighting for the Nazis was the most captured person in the history of war.

When Hetty goes rogue, she leaves the NCIS team completely in the dark; the mole kidnaps one of the agents.

An NCIS agent is held at an unknown location and tortured by the mole, and another agent discovers he was betrayed by someone he least expected.

The Harrelsons engage in a tense family reunion when Hondo's older sister begrudgingly arrives to see their sick father for the first time in decades; the team searches for an abducted human rights activist; Luca's food truck business hits a snag.

Thieves are on the run with a high-tech thermal lance that can cut through almost anything; to find the thieves, the team works to identify their target; Chris confronts an imbalance in her relationship with Kira and Ty.

A family takes a local officer hostage when they're evicted from their home; Hondo reflects on his personal life choices as he helps his father through a medical crisis; Chris' relationship with Kira and Ty reaches a critical juncture.

The Harrelsons engage in a tense family reunion when Hondo's older sister begrudgingly arrives to see their sick father for the first time in decades; the team searches for an abducted human rights activist; Luca's food truck business hits a snag.

Thieves are on the run with a high-tech thermal lance that can cut through almost anything; to find the thieves, the team works to identify their target; Chris confronts an imbalance in her relationship with Kira and Ty.

A family takes a local officer hostage when they're evicted from their home; Hondo reflects on his personal life choices as he helps his father through a medical crisis; Chris' relationship with Kira and Ty reaches a critical juncture.

When Hetty goes rogue, she leaves the NCIS team completely in the dark; the mole kidnaps one of the agents.

An NCIS agent is held at an unknown location and tortured by the mole, and another agent discovers he was betrayed by someone he least expected.

Mike and Frank head east to discover fantastic finds from fast-yalking Jacky Hollywood, whose auto body creations are works of art.

The crew faces the spring melt to fly mining equipment; Arnie and Justin en route to Turkey.

An accident affects the waterbomber crew in Turkey; Wilf's first run causes panic.

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

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

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

Teetering between the apocalyptic and absurd, declassified records will unveil the top secret weapons programs that attempted to bring down the world, uncovering the Soviet atomic test that shook the Earth with a force 1,500 times more powerful than the Hiroshima bomb, the CIA's creation of a gun that fired a shellfish-harvested toxin, and the Allies' bizarre secret plan to end World War II by feminizing Hitler.

When Hetty goes rogue, she leaves the NCIS team completely in the dark; the mole kidnaps one of the agents.

An NCIS agent is held at an unknown location and tortured by the mole, and another agent discovers he was betrayed by someone he least expected.

The Harrelsons engage in a tense family reunion when Hondo's older sister begrudgingly arrives to see their sick father for the first time in decades; the team searches for an abducted human rights activist; Luca's food truck business hits a snag.

Thieves are on the run with a high-tech thermal lance that can cut through almost anything; to find the thieves, the team works to identify their target; Chris confronts an imbalance in her relationship with Kira and Ty.

A family takes a local officer hostage when they're evicted from their home; Hondo reflects on his personal life choices as he helps his father through a medical crisis; Chris' relationship with Kira and Ty reaches a critical juncture.

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

A look at what happened to the secret hoard of the Knights Templar, a treasure of gold, silver, gems and religious relics protected by a medieval religious order.

Teetering between the apocalyptic and absurd, declassified records will unveil the top secret weapons programs that attempted to bring down the world, uncovering the Soviet atomic test that shook the Earth with a force 1,500 times more powerful than the Hiroshima bomb, the CIA's creation of a gun that fired a shellfish-harvested toxin, and the Allies' bizarre secret plan to end World War II by feminizing Hitler.

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

At one in point in time, the reality of state-run programs designed to warp and control minds, both in the lab and on the battlefield existed. From the CIA's decades-long pursuit of the perfect truth serum to the U.S. Army's secret PsyOps in Vietnam, mind games have long been at play among countries, its enemies, and even its own citizens-every one a more alarming deception than the next.

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

A look at what happened to the secret hoard of the Knights Templar, a treasure of gold, silver, gems and religious relics protected by a medieval religious order.

At one in point in time, the reality of state-run programs designed to warp and control minds, both in the lab and on the battlefield existed. From the CIA's decades-long pursuit of the perfect truth serum to the U.S. Army's secret PsyOps in Vietnam, mind games have long been at play among countries, its enemies, and even its own citizens-every one a more alarming deception than the next.

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

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

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

Teetering between the apocalyptic and absurd, declassified records will unveil the top secret weapons programs that attempted to bring down the world, uncovering the Soviet atomic test that shook the Earth with a force 1,500 times more powerful than the Hiroshima bomb, the CIA's creation of a gun that fired a shellfish-harvested toxin, and the Allies' bizarre secret plan to end World War II by feminizing Hitler.

A look at what happened to the secret hoard of the Knights Templar, a treasure of gold, silver, gems and religious relics protected by a medieval religious order.

Ian becomes upset when he is removed from working on a 1970 Datsun 510; the multimillion-dollar Bugatti Aerolithe is damaged.

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.

Peter gets stuck in the mud; Beat helps Sam with his biggest build ever, but a reckless crane operator threatens the entire project.

At the site of the former Yugoslavian Consulate, Ted hopes to salvage invaluable secret relics of the Cold War; back at the National, a buyer shows interest in a vintage WW II truck but Ted has to convince him the price is right.

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.

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

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

Charles receives a week's supply of newspapers from home at a time when no other mail is getting through.

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

The team investigates an intel operation after four people connected to the project die in a diner explosion.

When a female robbery crew honeytraps and kills several rich VIPs, HONDO and 20-SQUAD get a call to come in; they assist FBI Agent Jackie Vasquez in capturing the dangerous fugitives, before the death toll rises.

It's the only unsolved air piracy case in history; in 1971, a man hijacks a Northwest Orient Airlines flight, demanding four parachutes and $200,000; he jumps out of the plane with the money and is never seen again.

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

Charles receives a week's supply of newspapers from home at a time when no other mail is getting through.

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

When a female robbery crew honeytraps and kills several rich VIPs, HONDO and 20-SQUAD get a call to come in; they assist FBI Agent Jackie Vasquez in capturing the dangerous fugitives, before the death toll rises.

At one in point in time, the reality of state-run programs designed to warp and control minds, both in the lab and on the battlefield existed. From the CIA's decades-long pursuit of the perfect truth serum to the U.S. Army's secret PsyOps in Vietnam, mind games have long been at play among countries, its enemies, and even its own citizens-every one a more alarming deception than the next.

While the team races to prepare the Money Pit for the deepest, and final dig of the season, in Malta, the fellowship uncovers a family bloodline that connects the Knights of Malta to Oak Island.

Nicola Tesla had revolutionary ideas, but in the hands of the wrong people, those ideas could be used for evil purposes; when Tesla died, he allegedly had 80 trunks of papers full of ideas, but only 60 have been seen again.

For centuries, secret codes have been embedded in sacred texts, paintings, and even etched into the earth itself; uncovering the stories behind these cryptic messages, those who endeavored to decipher them, and the secrets they may reveal.

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

Nicola Tesla had revolutionary ideas, but in the hands of the wrong people, those ideas could be used for evil purposes; when Tesla died, he allegedly had 80 trunks of papers full of ideas, but only 60 have been seen again.

For centuries, secret codes have been embedded in sacred texts, paintings, and even etched into the earth itself; uncovering the stories behind these cryptic messages, those who endeavored to decipher them, and the secrets they may reveal.

It's the only unsolved air piracy case in history; in 1971, a man hijacks a Northwest Orient Airlines flight, demanding four parachutes and $200,000; he jumps out of the plane with the money and is never seen again.

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

When a female robbery crew honeytraps and kills several rich VIPs, HONDO and 20-SQUAD get a call to come in; they assist FBI Agent Jackie Vasquez in capturing the dangerous fugitives, before the death toll rises.

The team investigates an intel operation after four people connected to the project die in a diner explosion.

Alex's ego is crushed when the Bugatti fails to perform; a damaged Alfa Romeo gets a cosmetic overhaul; David attempts to figure out what is wrong with Larry's new Ferrari.

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.

Beat creates a country retreat for a demanding French financier; Joel's Australian client makes a last minute request for a three-car garage; Peter plans a surprise for Andre's 50th birthday.

Ted and Justin salvage at a century-old warehouse that was once the mail order depot for one of North America's largest department stores; Ted promises Ryan big profits from the timber inside the massive structure, but things don't go as planned.

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.

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

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

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

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

When a U.S. senatorial candidate's staffer is run over and killed while crossing the street, the team must determine if it was an accident or a murder than could put others in danger.

The squad scrambles to track down a cold-blooded sniper terrorizing Los Angeles; Tan finds himself questioning his leadership abilities; Powell and Alfaro compete in a classic game of S.W.A.T. tag.

Examining if the famous glowing lights seen above Marfa, Texas are a natural or supernatural phenomenon, what spirit possessed a goat to walk down a street like a human, and if mysterious stone carvings in Japan are connected to a close encounter.

Black and white photos taken in 1951 suggest that a woman in St. Petersburg, Florida spontaneously combusts; a brain-numbing noise plaguing Brooklyn residents; a woman claims to have witnessed something even scarier than a Chinese Spy Balloon.

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

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

The squad scrambles to track down a cold-blooded sniper terrorizing Los Angeles; Tan finds himself questioning his leadership abilities; Powell and Alfaro compete in a classic game of S.W.A.T. tag.

Nicola Tesla had revolutionary ideas, but in the hands of the wrong people, those ideas could be used for evil purposes; when Tesla died, he allegedly had 80 trunks of papers full of ideas, but only 60 have been seen again.

For centuries, secret codes have been embedded in sacred texts, paintings, and even etched into the earth itself; uncovering the stories behind these cryptic messages, those who endeavored to decipher them, and the secrets they may reveal.

When is Mission: Impossible more than just a movie? From the gaspingly record-shattering depths submarine divers have plunged to tap a secret Soviet communication line to the Special Ops team of suicidal soldiers sent to hand-deploy A-bombs in enemy territory, newly uncensored evidence will reveal the lengths that the few and the elite have gone to within the most hostile lands, all in the name of completing the mission.

Black and white photos taken in 1951 suggest that a woman in St. Petersburg, Florida spontaneously combusts; a brain-numbing noise plaguing Brooklyn residents; a woman claims to have witnessed something even scarier than a Chinese Spy Balloon.

Examining if the famous glowing lights seen above Marfa, Texas are a natural or supernatural phenomenon, what spirit possessed a goat to walk down a street like a human, and if mysterious stone carvings in Japan are connected to a close encounter.

When is Mission: Impossible more than just a movie? From the gaspingly record-shattering depths submarine divers have plunged to tap a secret Soviet communication line to the Special Ops team of suicidal soldiers sent to hand-deploy A-bombs in enemy territory, newly uncensored evidence will reveal the lengths that the few and the elite have gone to within the most hostile lands, all in the name of completing the mission.

Black and white photos taken in 1951 suggest that a woman in St. Petersburg, Florida spontaneously combusts; a brain-numbing noise plaguing Brooklyn residents; a woman claims to have witnessed something even scarier than a Chinese Spy Balloon.

Reports of a dinosaur living in the African Congo, strange lights above the Hessdalen Valley in Norway, a 12-year-old girl in Russia with superhuman strength, and proof of an alien structure on an asteroid.

Examining if the famous glowing lights seen above Marfa, Texas are a natural or supernatural phenomenon, what spirit possessed a goat to walk down a street like a human, and if mysterious stone carvings in Japan are connected to a close encounter.

The squad scrambles to track down a cold-blooded sniper terrorizing Los Angeles; Tan finds himself questioning his leadership abilities; Powell and Alfaro compete in a classic game of S.W.A.T. tag.

When a U.S. senatorial candidate's staffer is run over and killed while crossing the street, the team must determine if it was an accident or a murder than could put others in danger.

David takes Alex to the Elegance at Hershey; the guys work on a 1966 Oldsmobile Toronado and race to complete the Bugatti.

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.

Peter builds a duck-hunting cabin in Newfoundland; Bryan Jr. renovates the patio at a local pub.

Ted's new salvage job is a blast from the past: a classic bowling alley; Ryan leads his team on a high-stakes overnight highway bridge demolition.

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.

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

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

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

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

A CIA agent who once worked with Sam seeks his help before dying of an apparent suicide; while working under cover, Deeks and Kensi enter a prized poodle in a dog show.

Tan finds himself on a one-man mission to save his new love interest and her journalist co-workers when mercenaries take over a black-tie correspondents' dinner; Hondo and Nichelle return home to find their house trashed.

Defense contractor Ralph Baer invents the world's first home video game console, but it is soon eclipsed by a new table tennis game; when a third pioneer, Jerry Lawson, creates a console featuring swappable games, the video game industry explodes.

Early American malls had no food court, until a cinnamon bun, a pretzel, and a panda all move in to create three of the world's most iconic food brands and transform the American Mall.

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

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

Tan finds himself on a one-man mission to save his new love interest and her journalist co-workers when mercenaries take over a black-tie correspondents' dinner; Hondo and Nichelle return home to find their house trashed.

Defense contractor Ralph Baer invents the world's first home video game console, but it is soon eclipsed by a new table tennis game; when a third pioneer, Jerry Lawson, creates a console featuring swappable games, the video game industry explodes.