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

Breanna and Oliver go shrimping, while Sam and Curly net for salmon.

Sam helps Matt fix up an aging vessel to prepare for fishing season.

Tim Curly Leech finally fixes a ticking time bomb on his property.

With winter on its way, Sam and Squibb band together to build Curly a hoist.

Sam and Troy embark on a treasure dive while Mary takes a shot at a buck.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

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

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.

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.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

Mariana van Zeller investigates a dark and very elusive black market, the illicit trade in human organs.

Operating under a noise curfew, Sydney Airport faces pressure to complete 900 plane movements in a day; duty manager George is confronted by a suspicious package.

Baggage manager Kevin has a rough day trouble-shooting a number of mechanical breakdowns; security screening discovers a passenger travelling with a gun.

An emergency training exercise encounters disturbance due to dangerous winds, flight board failure, and a real-life emergency of an explosion in a passenger terminal.

Torrential rain closes two runways as an incoming flight deals with an onboard medical emergency; a fire training drill turns into a real emergency.

Sydney Airport is on high alert for the arrival of the Prime Minister of Singapore, and Duty Manager Mel's favorite pop star; security searches for a woman reported to have collapsed on the street.

An emergency training exercise encounters disturbance due to dangerous winds, flight board failure, and a real-life emergency of an explosion in a passenger terminal.

Security breaches, an air ambulance emergency, drugs found in an unattended bag and an angry passenger add up to a busy Friday for Duty Manager George.

Will Smith heads to the South Pole to meet remote scientists.

Will, a man scared of spiders his whole life, ventures deep into the Ecuadorian Amazon on an expedition in search of deadly creatures; he is joined by professor Bryan Fry and local mountaineer Carla Perez, they abseil 200 feet into a cave network known as the womb of the Earth, where they discover a giant tarantula; using cutting-edge techniques, they extract its venom, which could hold the key to saving millions of lives.

After exhausting all leads, coroner Scott McCord turns to the DNA Doe Project to try and identify one of the victims of serial killer Larry Eyler.

DNA detectives attempt to identify a young female found dead in the desert.

Will Smith heads to the South Pole to meet remote scientists.

Will, a man scared of spiders his whole life, ventures deep into the Ecuadorian Amazon on an expedition in search of deadly creatures; he is joined by professor Bryan Fry and local mountaineer Carla Perez, they abseil 200 feet into a cave network known as the womb of the Earth, where they discover a giant tarantula; using cutting-edge techniques, they extract its venom, which could hold the key to saving millions of lives.

Mariana van Zeller investigates a dark and very elusive black market, the illicit trade in human organs.

Operating under a noise curfew, Sydney Airport faces pressure to complete 900 plane movements in a day; duty manager George is confronted by a suspicious package.

Baggage manager Kevin has a rough day trouble-shooting a number of mechanical breakdowns; security screening discovers a passenger travelling with a gun.

An emergency training exercise encounters disturbance due to dangerous winds, flight board failure, and a real-life emergency of an explosion in a passenger terminal.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

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.

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

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.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

Alaska natives rely on the land as source of life in this enhanced episode.

An approaching spring brings new opportunities for subsistence living.

Generations of Indigenous peoples work to revive cultural practices once lost to colonization and raise the culture bearers of the future.

Alaska Natives use methods passed down from their ancestors to search for resources.

As the seasons change to spring, new challenges arise for Alaska Natives.

When the sun doesn't set, Alaska natives forgo sleep to seize the daylight.

Alaska Natives work with family to uphold traditions of their ancestors.

Alaska Natives use long summer days for harvests and projects.

A lone diamond, $3,000 in cash and cosplay costumes get left behind.

Aircraft carrier landing is a technical test for the students.

Alaska Natives use long summer days for harvests and projects.

A lone diamond, $3,000 in cash and cosplay costumes get left behind.

Aircraft carrier landing is a technical test for the students.

Alaska natives rely on the land as source of life in this enhanced episode.

An approaching spring brings new opportunities for subsistence living.

Generations of Indigenous peoples work to revive cultural practices once lost to colonization and raise the culture bearers of the future.

Alaska Natives use methods passed down from their ancestors to search for resources.

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

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.

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

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

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

Fueled by fear, two brothers turn against each other in deadly attacks.

Cesar rehabs an aggressive Labradoodle with an alarming history of biting.

Cesar rehabs an over-policing pit mix and a space-invading mini schnauzer.

Cesar helps shed the pounds of an overweight pit mix.

Cesar matches a rescue dog with a family & inspires them to be leaders.

Paraplegic pet mom struggles to manage fighting bulldogs on her own.

Cesar rehabs two destructive Boston terriers and a senior husky that is taking a big social step.

Gino, a western lowland gorilla, celebrates his 39th birthday; Lori notices a lump on lioness Kinsey which requires medical attention; Amanda prepares to welcome a spotted eagle ray pup into the world; Katelyn teaches navigation skills to two macaws.

Bertie travels to Patagonia to film the "Ghost of the Andes" puma.

Cesar helps an excited pit bull and matches a family with their forever dog.

A pioneering gorilla treatment, rhino fitness tracker, and tortoise party.

Bertie travels to Patagonia to film the "Ghost of the Andes" puma.

Cesar helps an excited pit bull and matches a family with their forever dog.

Fueled by fear, two brothers turn against each other in deadly attacks.

Cesar rehabs an aggressive Labradoodle with an alarming history of biting.

Cesar rehabs an over-policing pit mix and a space-invading mini schnauzer.

Cesar helps shed the pounds of an overweight pit mix.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

An untruthful traveler is missing two bags; a favor may land an American in hot water; mail center officers uncover a narcotic scheme; a traveler's visa is revealing; a student learns a lesson; a producer's luggage could be showstopper.

A pleasant American jumps the gun when he decides to go on a quick day-trip; a cheerful traveller's trip is in the bag; a baggage search turns cheesy; a traveller's odd luggage needs to go through the proper channels.

Two long boarders can't skate over their border exam; A traveler's phony story is exposed; a sailor's got more than pennies in his pockets; a rocker's lifestyle drums up some crucial questions.

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.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

The Yukon's Civil Air Search and Rescue Association battles flying conditions in their search for a historic missing plane that had 44 people on board; the Dawson City Fire Department responds to a 911 call that puts the town in jeopardy.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

An untruthful traveler is missing two bags; a favor may land an American in hot water; mail center officers uncover a narcotic scheme; a traveler's visa is revealing; a student learns a lesson; a producer's luggage could be showstopper.

A pleasant American jumps the gun when he decides to go on a quick day-trip; a cheerful traveller's trip is in the bag; a baggage search turns cheesy; a traveller's odd luggage needs to go through the proper channels.

Two long boarders can't skate over their border exam; A traveler's phony story is exposed; a sailor's got more than pennies in his pockets; a rocker's lifestyle drums up some crucial questions.

In the shadow of the Great Pyramid, archaeologists unearth a royal palace.

Archeologists excavate an unexplored burial chamber inside a pyramid.

New discoveries reveal the secrets of Roman gladiators' enduring appeal.

Archaeologists dig in Pompeii to uncover the dark side of the idyllic Roman city by finding the room of an enslaved person.

Archaeologists reveal the discovery of a Nero megastructure.

Discoveries uncover how the Romans ruled the seas for four centuries.

Archaeologists excavate a buried city in Jordan, dive a sunken temple in Italy and explore Petra to shed new light on how Rome conquered the east.

Archaeologists excavate the vast frontier of the Roman Empire, investigating the battle to keep it safe.

Why is one moai bearded?; are flying saucers real?; can a wooden bucket heal?

After learning mind-bending tricks from Penn & Teller, and having his perception of reality destroyed by Zach King, Jeff learns that magic can be a celebration of nature and a connection to cultural heritage.

National Geographic explorer and writer Paul Salopek traces the ancient Min River in Sichuan province with his local walking partners, including Chinese historian Professor Luo Xing.

Archaeologists excavate the vast frontier of the Roman Empire, investigating the battle to keep it safe.

Why is one moai bearded?; are flying saucers real?; can a wooden bucket heal?

National Geographic explorer and writer Paul Salopek walks the Tea Horse Road, a southerly branch of the vast ancient silk road network in China, delving into its rich history and culture through the lens of a village historian.

National Geographic explorer and writer Paul Salopek traces the ancient Min River in Sichuan province with his local walking partners, including Chinese historian Professor Luo Xing.

In the shadow of the Great Pyramid, archaeologists unearth a royal palace.

Archeologists excavate an unexplored burial chamber inside a pyramid.

New discoveries reveal the secrets of Roman gladiators' enduring appeal.

Archaeologists dig in Pompeii to uncover the dark side of the idyllic Roman city by finding the room of an enslaved person.

Lisa and Todd take on one of the toughest runs of the season; Darrell steals business from his former boss; Alex's trucking season is threatened by a crash.

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

Lisa and Todd take on one of the toughest runs of the season; Darrell steals business from his former boss; Alex's trucking season is threatened by a crash.

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

Dr. Oakley treats a cat that swallowed a string and a pregnant reindeer with cancer.

Dr. Oakley faces a toxic emergency and removes the eye of an alpaca.

Dr. Oakley transports a bull by boat and sees chinchillas for a cuteness check.

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

Dr. Oakley performs a checkup on two scrappy lynx, and Sierra takes charge on clinic day.

Back in the Yukon, the Oakleys help over 100 cattle and a rowdy mini mule.

Dr. Oakley treats a kitten with a bulging eye, and Sierra preg checks a miniature cow.

Dr. Oakley treats a beagle mix with a severely infected paw and rappels to an eagle's nest.

Dr. Oakley herds a group of unruly reindeer and treats a mini ram with a limp.

Dr. Oakley treats an electrocuted sloth and releases rescued animals back into the wild.

In Costa Rica, Dr. Oakley handles a pair of jaguars and a sloth in heat.

Dr. Oakley herds a group of unruly reindeer and treats a mini ram with a limp.

Dr. Oakley treats an electrocuted sloth and releases rescued animals back into the wild.

In Costa Rica, Dr. Oakley handles a pair of jaguars and a sloth in heat.

Dr. Oakley treats a limping bison and a litter of puppies struggling to survive.

Dr. Oakley tries to outsmart a herd of bison and fights for the life of a cherished friend.

Dr. Oakley operates on an unusual mass and investigates a musk ox with a hair loss problem.

Dr. Oakley performs a checkup on two scrappy lynx, and Sierra takes charge on clinic day.

Darrell's calls in a surprising reinforcement; but can this new team member hack the treacherous ice roads; Hugh has a brush with near disaster.

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.

Darrell's calls in a surprising reinforcement; but can this new team member hack the treacherous ice roads; Hugh has a brush with near disaster.

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 Dawson City Fire Department races to protect the town from devastating flash floods; officers track down a dangerous and destructive bison herd, have a run-in with a bear and set up a sting to catch a suspected serial over-fisher.

Tim and Fuzz start off with Andy's Ford Pop hot-rod, a highly modified car from the 1950s; it is bent, broken and full of rust.

With town planner Maz suffering from a serious genetic disorder, Tim and Fuzz work on restoring his iconic BMW E30 Alpina, which they find may or may not be a genuine Alpina.

When Brian starts suffering from health problems, the project of restoring his XR2 to show-winning condition comes to a halt; Tim and Fuzz step in.

Fuzz Townshend and Tim Shaw aim to help refrigeration engineer Tim, whose life has been blighted by a cruel genetic condition, as they take on their first-ever Honda.

Tim and Fuzz restore a Citroen SM, widely considered one of the best French cars, after it suffers catastrophic engine failure on its first outing.

Fuzz Townshend and Tim Shaw head to Norfolk to take on a 1962 TVR Grantura, that has been off the road for nearly 50 years.

Tim and Fuzz are out to help Darren, who was left disabled after a tragic road accident in which he saved his grandson, by fixing up his iconic 1989 Golf.

Fuzz Townshend and Tim Shaw restore a "Triumph TR7," one of the most divisive British sports cars ever made.

Tim and Fuzz are in unknown territory as they take on 28-year-old Charlie's Lexus IS200 and transform it into a full-blown drift car.

A Datsun Skyline is the next restoration project for Tim and Fuzz; a Japanese classic from the 1970's, it is going to be no easy task, as there are only two others on the road in the UK.

Some scientists believe exposure to extreme temperatures can trigger our bodies' own defenses against the killer diseases of old age. Chris heads for the freezing Arctic with his brothers Liam and Luke to take on the ultimate cold therapy.

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

A Datsun Skyline is the next restoration project for Tim and Fuzz; a Japanese classic from the 1970's, it is going to be no easy task, as there are only two others on the road in the UK.

A giraffe gets a pedicure; an elephant check-up reveals a mouthful; a rescued chicken with an egg problem requires surgery; a dolphin gets a high-tech exam.

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

When Brian starts suffering from health problems, the project of restoring his XR2 to show-winning condition comes to a halt; Tim and Fuzz step in.

Fuzz Townshend and Tim Shaw aim to help refrigeration engineer Tim, whose life has been blighted by a cruel genetic condition, as they take on their first-ever Honda.

Tim and Fuzz restore a Citroen SM, widely considered one of the best French cars, after it suffers catastrophic engine failure on its first outing.

Fuzz Townshend and Tim Shaw head to Norfolk to take on a 1962 TVR Grantura, that has been off the road for nearly 50 years.

Honesty is the best policy, even for ex-cons; A student gets the dish on declaring items properly.

Airport officers let the khat out of the bag; A repeat offender must prove he's learned his lesson.

A traveler has suitcases full of surprises; A Canadian couple returns home with a man-eating beast; two Americans tow their friend's boat to Alaska.

The dogs are brought in to assist officers; A traveler goes gaga at Vancouver International Airport.

Darrell continues to teach Reno how to drive the ice roads; bad wiring could sink Alex's cement load; Lisa and Todd run into a a road block.

Cold weather threatens the miners' operations; Ken contemplates laying off half his crew; Karl's workers hunt moose after their sluice box ices over; Big Al battles beavers.

The guys stop at an amateur historian's home in Quebec's Eastern townships.

Honesty is the best policy, even for ex-cons; A student gets the dish on declaring items properly.

Airport officers let the khat out of the bag; A repeat offender must prove he's learned his lesson.

A traveler has suitcases full of surprises; A Canadian couple returns home with a man-eating beast; two Americans tow their friend's boat to Alaska.

The dogs are brought in to assist officers; A traveler goes gaga at Vancouver International Airport.

The team tackles a difficult interception of drug traffickers.

The crew of a Metal Shark investigates a tip about the possible dealing of laughing gas on a party boat; an abandoned dinghy with possible human remains is located.

The crew of the DASH-8 aircraft face a challenging rescue operation of 14 drowning people from a sunken oil tanker; in Aruba, the Coast Guard searches for drugs on a local fisherman's boat.

A Coastguard naval vessel is involved in the interception of a drug boat; the crew of the helicopter is called out to perform a dangerous rescue.

A naval vessel is involved in two thrilling interceptions of drug boats; the helicopter crew attempts a rescue of a mysterious man at sea.

The interception of a drug boat by a Navy helicopter leads to a dangerous situation; the DASH-8 attempts to rescue two fishermen.

An NH-90 naval helicopter intercepts a fleeing drug boat; the Metal Shark crew attempts to save undocumented migrants from a sinking boat.

Residents of Port Protection use both brain and brawn to survive.

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.

Matt and Carl prepare for adventure; Oliver chases after deer.

Residents of Port Protection use both brain and brawn to survive.

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.

Matt and Carl prepare for adventure; Oliver chases after deer.

The team tackles a difficult interception of drug traffickers.

The crew of a Metal Shark investigates a tip about the possible dealing of laughing gas on a party boat; an abandoned dinghy with possible human remains is located.

The crew of the DASH-8 aircraft face a challenging rescue operation of 14 drowning people from a sunken oil tanker; in Aruba, the Coast Guard searches for drugs on a local fisherman's boat.

A Coastguard naval vessel is involved in the interception of a drug boat; the crew of the helicopter is called out to perform a dangerous rescue.

Officers question a nervous traveler; a trampoline installer hopes to avoid the bounce around; undeclared dogs from Hungary.

A chef with limited funds and no return ticket; serial numbers aren't piecing together in a gun shipment; a travel agent's last-minute Caribbean booking raises red flags; a boat owner fails to report to CBSA.

Officers get the dope on a traveler's rap sheet; A passenger is unsure of his luggage contents.

Suspicious x-rays; an MMA fighter's story; an RV search that reveals unusual weapons; a cross-border car sale.

Polar drivers Lisa, Art and Todd start on an epic journey up the longest seasonal winter road in the world; VP stays closer to home, traveling dangerous roads in a late attempt to boost their load count.

The early arrival of winter forces Ken on a dangerous drive for fuel; Karl deals with a frozen sluice plant, a broken vehicle, and other assorted troubles; Bernie loses his pay streak and a crew member.

On the way to Winnipeg, the van needs some mechanical TLC.

Officers question a nervous traveler; a trampoline installer hopes to avoid the bounce around; undeclared dogs from Hungary.

A chef with limited funds and no return ticket; serial numbers aren't piecing together in a gun shipment; a travel agent's last-minute Caribbean booking raises red flags; a boat owner fails to report to CBSA.

Officers get the dope on a traveler's rap sheet; A passenger is unsure of his luggage contents.

Suspicious x-rays; an MMA fighter's story; an RV search that reveals unusual weapons; a cross-border car sale.

Mariana tracks the illicit path of hashish from Morocco into Europe; a world of shadowy dealers, fast smuggling boats and endless wealth.

Health care costs have pushed millions of Americans to the black market.

Mariana goes inside the dangerous, high-stakes world of illegal gambling to try and understand its allure, its growth and its dark side.

Mariana heads to the Congo to investigate the illegal trading of wild apes that has apes on the brink of extinction.

The trafficking of human remains yields billions of dollars globally and remains clandestine; Mariana's investigation reveals the vulnerability of anyone to human remains trafficking.

Mariana heads to Mexico to investigate the billion-dollar business of people-smuggling to the U.S., a system fueled by cartels and corruption.

Mariana goes inside the world of contract killers.

Mariana delves into a new scheme called sextortion, where compromising photos are used to extort victims; while searching for the scammer who targeted a young American, she uncovers a scam culture even more terrifying than she had imagined.

Will travels deep into the Amazon in search of a giant green anaconda.

Will heads to the Himalayas in search of the secret to happiness.

Mariana delves into a new scheme called sextortion, where compromising photos are used to extort victims; while searching for the scammer who targeted a young American, she uncovers a scam culture even more terrifying than she had imagined.

Will travels deep into the Amazon in search of a giant green anaconda.

Will heads to the Himalayas in search of the secret to happiness.

Mariana tracks the illicit path of hashish from Morocco into Europe; a world of shadowy dealers, fast smuggling boats and endless wealth.

Health care costs have pushed millions of Americans to the black market.

Mariana goes inside the dangerous, high-stakes world of illegal gambling to try and understand its allure, its growth and its dark side.

Mariana heads to the Congo to investigate the illegal trading of wild apes that has apes on the brink of extinction.

A businesswoman's personal items sound alarms; a cargo ship crew member who has been concealing in the ceiling; a puppeteer couple; an American seeking legal advice in Ontario.

Partygoers receive rave reviews at the Coutts crossing; officers delve into an international affair.

Cookies can be more trouble than treat; twins with matching beers take a wrong turn.

Officers make a stunning discovery; a tourist's papers hint at her true plans for coming to Canada.

Lisa has to decide help a competitor push further into the arctic unknown or go back to Polar headquarters with her teammates.

Ken uncovers a mother lode of gold after he changes the Beast's location; breakdowns threaten to bring an early end to Bernie's season; Big Al selects a final site for his sluice plant.

An 84-year-old collector in Balzac, Alberta has a property jam-packed with odd artifacts.

A businesswoman's personal items sound alarms; a cargo ship crew member who has been concealing in the ceiling; a puppeteer couple; an American seeking legal advice in Ontario.

Partygoers receive rave reviews at the Coutts crossing; officers delve into an international affair.

Cookies can be more trouble than treat; twins with matching beers take a wrong turn.

Officers make a stunning discovery; a tourist's papers hint at her true plans for coming to Canada.

Alaska's next generation must respect the land and its inhabitants to survive.

The next generation of remote Alaskans must secure food in bleak winter.

The team is in the crystal-clear waters of Bimini in the Bahamas to witness the incredible journey of the great hammerhead shark; as the team follows the shark's migration, they discover the secrets of how these animals navigate the vast ocean.

The team travels to the Dominican Republic in the Caribbean to reveal the greatest secrets in the lives of the North Atlantic humpback whale; they witness a mother defend her calf in the ultimate ocean battle with a pack of orcas.

The team is in the Azores to tag the sixgill shark and learn more about its nightly patterns hunting for food in the abyss; the team tags and retrieves valuable data, uncovering why this shark undertakes its epic journey from the depths at night.

In the Azores, the team follows the elusive sperm whales to their hunting grounds a mile beneath the surface, where they discover the secret lives of these deep-diving whales.

Learning how a population of bowhead whales, once hunted almost to extinction, is faring today; the team is the first to observe the feeding strategies of the deep-sea Greenland shark, an animal that can live for more than 400 years.

The team's mission is to figure out if Svalbard's polar bears are adapting to their environment; they face this giant of the Arctic Ocean and scale a glacier to learn how much time is left for one of the most critical habitats for polar bears.

A 40th-anniversary gift, $1,500 in cash and a stuffed jewelry box get lost.

The students start the dogfighting phase to learn how to attack.

The team's mission is to figure out if Svalbard's polar bears are adapting to their environment; they face this giant of the Arctic Ocean and scale a glacier to learn how much time is left for one of the most critical habitats for polar bears.

A 40th-anniversary gift, $1,500 in cash and a stuffed jewelry box get lost.

The students start the dogfighting phase to learn how to attack.

Alaska's next generation must respect the land and its inhabitants to survive.

The next generation of remote Alaskans must secure food in bleak winter.

The team is in the crystal-clear waters of Bimini in the Bahamas to witness the incredible journey of the great hammerhead shark; as the team follows the shark's migration, they discover the secrets of how these animals navigate the vast ocean.

The team travels to the Dominican Republic in the Caribbean to reveal the greatest secrets in the lives of the North Atlantic humpback whale; they witness a mother defend her calf in the ultimate ocean battle with a pack of orcas.

A senior has some unfriendly gear in his RV; a Canadian returning from Panama tells all.

An American is busted trying to catch a different kind of trip; officers help a tipsy traveler.

A heavy automobile container hints at trouble; A student's stash of food brings him discomfort.

A traveler returns with a surprise; Marine officers come upon an infested container.

Experts predict one of the shortest and warmest winters on record; as a result, companies risk financial ruin and communities face deprivation unless the drivers can deliver vital supplies before their window of opportunity slams shut.

Snow threatens to bury Ken's pay dirt; Karl ignores his father's advice; Big Al deals with failing equipment and unhappy workers as his first season comes to an end.

Picking their way through Ontario, the guys may have hit the jackpot on a sprawling property full of outbuildings.

A senior has some unfriendly gear in his RV; a Canadian returning from Panama tells all.

An American is busted trying to catch a different kind of trip; officers help a tipsy traveler.

A heavy automobile container hints at trouble; A student's stash of food brings him discomfort.

A traveler returns with a surprise; Marine officers come upon an infested container.

Cesar works with a confused Goldendoodle and a fearful pet parent.

Cesar's rehab of two violent dogs threatening to kill each other continues.

Cesar finds a perfect dog for a single mom and helps a biting mini pinscher.

Cesar rehabs an overprotective Great Dane mix.

A Chihuahua poses a threat to a pet mom's romantic life.

Cesar finds a dog to help a woman heal; he helps a territorial Maltipom.