No longer waiting for the government to share data, citizen scientists and private groups amplify the search for answers.

Chris turns to longevity doctor Peter Attia to find out how changing his eating habits can help his quest for longevity. Ironically, the answer is to eat no food at all for four days, which will unlock his body's own anti-aging powers.

Can Chris stop playing it safe and rediscover the joy of taking risks?

The story of Poland's survival, against all the odds.

The story of the Netherlands' most powerful defence - water.

Whistleblower testimony reignites a decades-long fight for transparency.

Commercial pilots come forward about their encounters with UFOs.

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.

A woman returning from a trip to China has business cards to a Sydney brothel and passports for three Chinese girls.

An old map connected to testimony from an 1891 eyewitness account of Slumach's hanging sheds light on the legend.

Conservation Officer Logan has a close call while investigating a case of poaching; an aggressive grizzly bear ransacks a remote trapper's cabin.

Glass brought light into homes and put the world into focus; people use glass to protect ourselves, cure disease, and create artistic masterpieces.

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.

A woman returning from a trip to China has business cards to a Sydney brothel and passports for three Chinese girls.

An HSI stakeout leads to nearly $500,000 of meth and fentanyl in San Diego; CBP finds concealed cash and a carload of cocaine at the El Paso border.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

HSI performs an undercover drug sting; CBP finds cocaine in Rio Grande Valley.

CBP's K9 sniffs out hidden cash; HSI intercepts a $2 million drug deal.

CBP in JFK and HSI in San Diego tackle fentanyl crisis on opposite coasts.

HSI partners with Colombian National Police to dismantle illegal gold mining operations; CBP thwarts cartel activity in Texas.

HSI money laundering stings; CBP's largest drug seizure in LAX history.

The residents of Port Protection build a life-changing tool.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

The search for crab takes residents into a dangerous new environment.

The residents of Port Protection build a life-changing tool.

In this enhanced episode, AMO Puerto Rico finds cocaine on a ferry.

The search for crab takes residents into a dangerous new environment.

An HSI stakeout leads to nearly $500,000 of meth and fentanyl in San Diego; CBP finds concealed cash and a carload of cocaine at the El Paso border.

PR AMO team hunts down boat loaded with $41 million of coke; CBP gets a tip about money smugglers and finds cocaine and people inside car trunks.

HSI performs an undercover drug sting; CBP finds cocaine in Rio Grande Valley.

CBP's K9 sniffs out hidden cash; HSI intercepts a $2 million drug deal.

A piece of salmon comes up positive for cocaine; Syrian carpets have something suspicious woven into the fabric.

A man arrives from Beijing with strong readings for narcotics; three men want to visit a temple that hasn't been built yet.

A woman's belongings are positive for heroin; a Malaysian man arrives looking for work.

A woman with protruding pants attracts the attention of Customs; a passenger would rather go to court than pay a fine.

A recurring mine marker points the team east to neighboring Harrison Lake as leads and legend line up; clues found in a 1950s article by an investigative reporter place a lost Spanish gold mine directly on Slumach's path.

When a bear charges a group of remote researchers, a Conservation Officer deals with the potentially life-threatening situation, and Ray takes on a challenging recovery that bested two tow companies before him.

The fundamental creation of the wheel helps shape the human experience, but if the wheel suddenly stopped working and society lost the greatest, game-changing accomplishments made using wheel technology, the world would be vastly different.

A piece of salmon comes up positive for cocaine; Syrian carpets have something suspicious woven into the fabric.

A man arrives from Beijing with strong readings for narcotics; three men want to visit a temple that hasn't been built yet.

A woman's belongings are positive for heroin; a Malaysian man arrives looking for work.

A woman with protruding pants attracts the attention of Customs; a passenger would rather go to court than pay a fine.

In this enhanced episode, the causes of three disasters are dissected.

Three real-world disasters forensically dissected - Deepwater Horizon explosion, the Concorde crash and the funicular fire at Kaprun.

The causes of three disasters involving a high-rise, a submarine and a subway station are dissected.

In this enhanced episode, the causes of three disasters are dissected, a nuclear plant, a tunnel and a department store.

Enhanced; three real-world disasters dissected: in space, a train and a high-rise.

Enhanced; three real-world disasters dissected: nuclear missile, ferry and oil rig.

In this enhanced episode, the causes of three disasters are dissected; Lac-Mégantic train crash, Imperial Sugar refinery explosion and Ever Given container ship accident.

Three real-world disasters forensically dissected: Fukushima nuclear plant, a Manhattan crane collapse, fire on the aircraft carrier USS Forrestal.

Will travels to a remote South Pacific island threatened by rising seas.

Will travels to the Kalahari Desert to learn the secrets of the San people.

Psychologist Modupe Akinola challenges Chris to stay calm during a terrifying walk along a crane that's projecting from a skyscraper. Chris learns powerful techniques to control stress in his life and combat the risk it poses to long-term health.

Will travels to a remote South Pacific island threatened by rising seas.

Will travels to the Kalahari Desert to learn the secrets of the San people.

In this enhanced episode, the causes of three disasters are dissected.

Three real-world disasters forensically dissected - Deepwater Horizon explosion, the Concorde crash and the funicular fire at Kaprun.

The causes of three disasters involving a high-rise, a submarine and a subway station are dissected.

In this enhanced episode, the causes of three disasters are dissected, a nuclear plant, a tunnel and a department store.

A woman tries to smuggle an expensive gift into Australia; a package from Hong Kong looks suspicious.

A fidgety passenger has officers on high alert because of what's found under his home's floorboards.

A musician claims to have special powers that help her see the future.

A father and son from China have four suitcases full of undeclared food; an immigration raid targets illegal workers.

The source of Slumach's lost gold.

Frigid temperatures wreak havoc on Dawson City, putting the fire department in danger; an avalanche shuts down the Klondike Highway and a tow operator races to find a driver who has plunged off-road and into an icy river.

Exploring what the world would be like if salt and all of its vital contributions, from food preservation to enabling industry, were to suddenly disappear.

A woman tries to smuggle an expensive gift into Australia; a package from Hong Kong looks suspicious.

A fidgety passenger has officers on high alert because of what's found under his home's floorboards.

A musician claims to have special powers that help her see the future.

A father and son from China have four suitcases full of undeclared food; an immigration raid targets illegal workers.

Alaskans confront brutal elements while on the hunt for critical resources.

Alaskans engineer inventive solutions for survival in the harsh elements.

With surprises around every bend, Alaskans must be ready for anything.

Alaskans brave the deadly cold of winter to protect their way of life.

The next generation must be resourceful tackling late winter challenges.

The next generation of Alaskans risk it all to ensure their survival.

Alaskans must push their boundaries in hopes of a prosperous future.

As the seasons change, the next generation must adapt in order to survive.

Vintage rackets, a live dog and a soldier's uniform are returned to owners.

Defensive dogfighting proves a tough test, as instructors go for the kill.

As the seasons change, the next generation must adapt in order to survive.

Vintage rackets, a live dog and a soldier's uniform are returned to owners.

Defensive dogfighting proves a tough test, as instructors go for the kill.

Alaskans confront brutal elements while on the hunt for critical resources.

Alaskans engineer inventive solutions for survival in the harsh elements.

With surprises around every bend, Alaskans must be ready for anything.

Alaskans brave the deadly cold of winter to protect their way of life.

An American tourist is caught renting by the hour, but insists she needs to meet up with her boyfriend.

At O'Hare International, a returning American's bananas cause a slip-up in secondary; a mother covers for her kid at Detroit's Ambassador Bridge; a car search is brought to a head in Washington State.

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.

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

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

The world is literally buzzing with insects; bees, spiders and insects of all shapes and sizes touch every aspect of life, they're the essential workers that pollinate food, clean up the dead and are an integral part of the ecosystem.

An American tourist is caught renting by the hour, but insists she needs to meet up with her boyfriend.

At O'Hare International, a returning American's bananas cause a slip-up in secondary; a mother covers for her kid at Detroit's Ambassador Bridge; a car search is brought to a head in Washington State.

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.

Dr. Pol and his team handle animal emergencies in Central Michigan.

A cow requires the doctor's assistance.

Dr. Pol needs to take blood samples from a flock of sheep to test for Ovine Progressive Pneumonia, a progressive, incurable and highly contagious disease.

Dr. Pol examines a goat that has been refusing to eat.

Dr. Pol and Diane celebrate a milestone that's been decades in the making.

Dr. Pol celebrates turning 80 with a trip to the Netherlands with Diane.

The Pols welcome a fluffy addition to the family; Tater is not pleased.

Beth, Erin and Kerri introduce Linus, a male mandrill, to a family of female mandrills; Nicole has a soft spot for a stinky pair of hyenas with spotty reputations; Susan helps Sohni, an eight-year-old Sumatran tiger, face a challenge.

Bertie tracks and films African wild dogs, one of the world's top predators.

Welcome to the fair; Vets rally to keep dreams alive for hardworking kids.

Scientists race to save the last two northern white rhinos from extinction.

Bertie tracks and films African wild dogs, one of the world's top predators.

Welcome to the fair; Vets rally to keep dreams alive for hardworking kids.

Dr. Pol and his team handle animal emergencies in Central Michigan.

A cow requires the doctor's assistance.

Dr. Pol needs to take blood samples from a flock of sheep to test for Ovine Progressive Pneumonia, a progressive, incurable and highly contagious disease.

Dr. Pol examines a goat that has been refusing to eat.

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

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

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

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

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

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.

Examining the history of cats and dogs and how they have been helpful companions to humankind all over the globe.

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

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

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

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

Archaeologists exploring the origins of the civilisation that built the great city of Angkor investigate ancient lost treasure discovered in Laos.

The discovery of gold and silver artifacts in Laos, dating to the early days of the Khmer Empire, leads scientists to investigate how the objects were made; on their journey, they retrace the steps of the ancient kings.

A look into how the T-Rex became king of the dinosaurs.

A look into how prehistoric land mammals evolved into top ocean predators.

How the giant ice age mammoth became extinct.

Taking a look at the excavations in the La Brea Tar Pits in Los Angeles and showcasing how the pits can help unravel the mystery of how the saber-toothed tiger hunted its prey.

How the giant megalodon shark took over the oceans.

How the Tasmanian Tiger became extinct.

A rock solves murders?; metal ears repel aircraft?; the Sphinx wore a false beard?

Jeff attends a roller disco and gets caught up in a dance battle.

Wildlife activists Benhail Antao and Louise Remedios put their patience and resilience to the test as they receive back-to-back snake rescue calls.

How the Tasmanian Tiger became extinct.

A rock solves murders?; metal ears repel aircraft?; the Sphinx wore a false beard?

Taking a look at the excavations in the La Brea Tar Pits in Los Angeles and showcasing how the pits can help unravel the mystery of how the saber-toothed tiger hunted its prey.

Archaeologists exploring the origins of the civilisation that built the great city of Angkor investigate ancient lost treasure discovered in Laos.

The discovery of gold and silver artifacts in Laos, dating to the early days of the Khmer Empire, leads scientists to investigate how the objects were made; on their journey, they retrace the steps of the ancient kings.

A look into how the T-Rex became king of the dinosaurs.

A look into how prehistoric land mammals evolved into top ocean predators.

On her first solo trip, Steph Custance braves one of the longest ice crossings on the map; Darrell Ward attempts a triple delivery in a single day; an engine fire stops Lisa Kelly in her tracks; Todd Dewey celebrates his birthday stuck on a road.

Adam, Kru and Tony follow the path of a failed 1982 Vancouver news team led by a Slumach gold hunter and mystic dowser.

On her first solo trip, Steph Custance braves one of the longest ice crossings on the map; Darrell Ward attempts a triple delivery in a single day; an engine fire stops Lisa Kelly in her tracks; Todd Dewey celebrates his birthday stuck on a road.

Adam, Kru and Tony follow the path of a failed 1982 Vancouver news team led by a Slumach gold hunter and mystic dowser.

Cesar rehabs a boxer with an aggressive obsession with attacking handbags.

Cesar finds a match for a young couple and helps with separation anxiety.

Cesar rehabs an overprotective Belgian Malinois and a puppy with no leadership.

A pet parent unknowingly trains his pit bull to attack cleaning objects.

Cesar rehabs a sound sensitive sheepdog and a confused golden retriever.

Cesar helps a back-of-the-pack biter and his pet parent shed their fear.

Two dogs with bizarre obsessions.

Cesar helps three little dogs with big problems.

In this special episode, Cesar helps two dogs with aggression issues.

In this special episode, Cesar helps two dogs in life-or-death situations.

In this special episode, Cesar helps three pandemic pups with big problems.

Cesar helps two families with big problems.

Cesar helps three families with quirky pups.

In this special episode, Cesar helps three pandemic pups with big problems.

Cesar helps two families with big problems.

Cesar helps three families with quirky pups.

A pet parent unknowingly trains his pit bull to attack cleaning objects.

Cesar rehabs a sound sensitive sheepdog and a confused golden retriever.

Cesar helps a back-of-the-pack biter and his pet parent shed their fear.

Two dogs with bizarre obsessions.

Todd Dewey must fix his truck or find himself stranded a hundred miles from the nearest town; Alex Debogorski confronts a creek in the middle of the road; Art Burke receives bad news; Lisa Kelly battles an ice crossing unlike any she's seen.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

Todd Dewey must fix his truck or find himself stranded a hundred miles from the nearest town; Alex Debogorski confronts a creek in the middle of the road; Art Burke receives bad news; Lisa Kelly battles an ice crossing unlike any she's seen.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

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

The devastating tsunami makes landfall, catching thousands unaware.

As the tsunami hits Thailand, tourists and locals fight for survival.

The wave hits Sri Lanka, and the world wakes up to news of the disaster.

After the tsunami, survivors on an island work together to save lives.

The most-famous witch trials of them all: Salem, Massachusetts.

The brutal Trier witch trials and the origins of witch-hunting.

The true story of the first major witch trials in Scotland.

Witch-hunters torture so-called witches during England's Civil War.

Swedish children tell stories of a place witches took them to.

A terrifying tale of demonic possession in a witch trial in Ireland.

As Chris bulks up for "Thor: Love and Thunder," he needs to build a body that looks right for an immortal god. But, he also wants the kind of muscles that are scientifically proven to ensure he stays strong and healthy in real life.

Chris goes to South Korea for the tools to change his relationship to pain.

A terrifying tale of demonic possession in a witch trial in Ireland.

As Chris bulks up for "Thor: Love and Thunder," he needs to build a body that looks right for an immortal god. But, he also wants the kind of muscles that are scientifically proven to ensure he stays strong and healthy in real life.

Chris goes to South Korea for the tools to change his relationship to pain.

The wave hits Sri Lanka, and the world wakes up to news of the disaster.

After the tsunami, survivors on an island work together to save lives.

The most-famous witch trials of them all: Salem, Massachusetts.

The brutal Trier witch trials and the origins of witch-hunting.

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

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

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

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

Karl contemplates a crew member's dismissal; fire threatens Cam's camp; Ken pours money into his operation.

A bell possibly from the train crash that killed Jumbo the Elephant in the late 1800s.

As the end of the season nears, Mark Kohaykewych makes a deal with rivals Darrell Ward and Lisa Kelly to join forces for a four-truck convoy; Alex Debogorski must complete one of the longest trails; Art Burke's truck gives out on the ice.

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

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

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

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

A long winter forever changes the paths of Port Protection's residents.

Carl hunts a deer; Troy dives and Curly and Veronica embrace danger.

In Port Protection, tools aren't always used for what they're intended.

Curly helps battle a group of deadly trees on his neighbor's property.

In Port Protection, good friends equal survival, as one hand helps another.

Sam and Squibb attempt to salvage an unwieldy boat mast.

Hoping to add a new weapon to his fishing arsenal, Oliver hits the water with Carl, Matt and a new set of slinky pots, and they're in for a shock.

In Port Protection, good friends equal survival, as one hand helps another.

HSI finds illegal guns in Miami; CBP in Texas seizes meth worth millions.

Milestone achievements are only possible with steep challenges in Port Protection; Carl and Matt pull a 3,000-gallon barrel up a cliff.

In Port Protection, good friends equal survival, as one hand helps another.

In this enhanced episode, CBP finds meth in a shipment of chili peppers.

Milestone achievements are only possible with steep challenges in Port Protection; Carl and Matt pull a 3,000-gallon barrel up a cliff.

A long winter forever changes the paths of Port Protection's residents.

Carl hunts a deer; Troy dives and Curly and Veronica embrace danger.

In Port Protection, tools aren't always used for what they're intended.

Curly helps battle a group of deadly trees on his neighbor's property.

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

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

A traveler must make a difficult decision; a bus passenger is busted with bud in her bag.

Officers find cocaine inside a Caribbean cocktail; officers sift through packages of pills.

Ken loses a machine when he can't afford to pay his debts and his crew; Big Al experiences more mechanical breakdowns; Dennis needs to quickly discover $10,000 worth of gold or get shut down.

The guys get a sneak peek of an auction with antique cars, retro gas pumps and collectibles.

The truckers in the historic four-truck convoy face fire and a thin crossing; after Art Burke's engine dies, he must travel back to Winnipeg with Alex Debogorski over a trail that destroys his truck.

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

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

A traveler must make a difficult decision; a bus passenger is busted with bud in her bag.

Officers find cocaine inside a Caribbean cocktail; officers sift through packages of pills.

Lion Air Flight 610 was just 13 minutes into flight from Jakarta, Indonesia, when it plunges into the sea on October 29, 2018.

The 1985 Japan Airlines Boeing 747 crash is the deadliest single-aircraft accident in history, with 520 fatalities out of 524 people on board.

Curious minds discover how the British Midland Flight 92 crashes on a freeway embankment near the village of Kegworth, resulting in tragedy.

Pakistan International Airlines Flight 8303 crashes near Karachi on 22 May 2020, minutes from landing. The Airbus A320 collides with a residential area during a second approach, just miles from the runway.

Experts shed light on the United Airlines Flight 232 crash as survivors share their firsthand accounts.

US Airways Flight 1549 takes off from New York City's LaGuardia Airport when it collides with a flock of birds, destroying both engines.

Investigators examine the reason behind the deadly crash of Air France Flight 447 that took a catastrophic dive into the Atlantic Ocean.

Survivors of the 2009 Turkish Airlines Flight 1951 crash share their firsthand experiences from that fateful day.

Will heads to the North Pole for his final and most dangerous mission.

Activist Dima Litvinov is on a dangerous mission; he documents the effects of the Russian military actions at the Chernobyl nuclear power plant and detects radiation levels.

A unique look into the mission and inner workings of Greenpeace through its legal campaigns, top-level scientific work and lobbying, and follows the work of activists and campaigners in their mission to save the planet.

Will heads to the North Pole for his final and most dangerous mission.

Survivors of the 2009 Turkish Airlines Flight 1951 crash share their firsthand experiences from that fateful day.

Lion Air Flight 610 was just 13 minutes into flight from Jakarta, Indonesia, when it plunges into the sea on October 29, 2018.

The 1985 Japan Airlines Boeing 747 crash is the deadliest single-aircraft accident in history, with 520 fatalities out of 524 people on board.

Curious minds discover how the British Midland Flight 92 crashes on a freeway embankment near the village of Kegworth, resulting in tragedy.

Pakistan International Airlines Flight 8303 crashes near Karachi on 22 May 2020, minutes from landing. The Airbus A320 collides with a residential area during a second approach, just miles from the runway.

Real estate entrepreneurs are questioned; a traveler's investments in the U.S. raises alarms; suspicious Mexican souvenirs.

A traveler is caught driving without a license; a U.S. resident returns from the Dominican Republic.

Human bones are found inside luggage; a pair fails to declare thousands of dollars in jewelry; a mysterious powder is masked by beauty products.

A traveler is caught with injections; officers smoke out marijuana residue; a mom may end up in jail due to a wrong turn.

Ken contends with a double mutiny; Cam's injured employee is airlifted to a hospital; Karl's crew encounters a bear.

A showroom full of antique cars, jukeboxes and tin trucks in central Alberta.

The drivers are ready for what is forecast to be a cold and busy winter, but the tragic passing of legendary driver Darrell Ward leaves the drivers wondering who can take his place.

Real estate entrepreneurs are questioned; a traveler's investments in the U.S. raises alarms; suspicious Mexican souvenirs.

A traveler is caught driving without a license; a U.S. resident returns from the Dominican Republic.

Human bones are found inside luggage; a pair fails to declare thousands of dollars in jewelry; a mysterious powder is masked by beauty products.

A traveler is caught with injections; officers smoke out marijuana residue; a mom may end up in jail due to a wrong turn.

Thord and Bjoern take on a marathon, 16-hour rescue, to stop an unstable truck falling off a steep gradient with a large lake below; it involves the men putting themselves in danger.

In the south of Norway, Thord, Bjoern and their army of men are forced to go out into one of the country's worst storms in ten years; they need to rescue a truck loaded with steel girders.

Bjoern is under pressure when a head-on collision between two trucks blocks an ambulance on an emergency call-out; Thord works through the night to rescue a driver trapped in his jack-knifed truck.

Thord and Bjoern face the ultimate rescue challenge when a fully loaded truck crashes 40 meters down a mountainside and is destroyed.

Bjoern finds himself in a tough situation when a double accident forces him to ask his rivals for help; Thord tries to rescue a 14-ton tractor.

In the north, Jo Roger's rookies are put to the test by rescuing three vehicles that have tumbled off the road; the tow truck sinks into a deep ditch.