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.

A car's radiation levels alert CBP; an officer digs up a stash of deadly bath salts; multiple phones materialize.

CBP converges on flights arriving from drug-source countries; a coffee expo volunteer finds trouble; pills are found in film containers.

A faceoff develops over luxury counterfeits; agents detect potentially lethal powder; a CBP beagle finds the mother load of meat.

Suspected of smuggling narcotics, a jittery traveler's next stop is a medical facility; a pair arrives bearing a trophy; CBP question a DJ's find.

A big bump takes out Art Burke's radiator; Todd Dewey's rig lands in a snowbank; Steph Custance regrets her foray onto a wet ice crossing; Alex Debogorski uses a sled to drag a construction shack across a frozen lake.

The Palace of Versailles in France reveals stories of a fallen musketeer, the schemes of Marie Antoinette, the murder of a king's mistress, and the origin of human life.

Duane lands a huge contract; Adam must work without Chuck.

A car's radiation levels alert CBP; an officer digs up a stash of deadly bath salts; multiple phones materialize.

CBP converges on flights arriving from drug-source countries; a coffee expo volunteer finds trouble; pills are found in film containers.

A faceoff develops over luxury counterfeits; agents detect potentially lethal powder; a CBP beagle finds the mother load of meat.

Suspected of smuggling narcotics, a jittery traveler's next stop is a medical facility; a pair arrives bearing a trophy; CBP question a DJ's find.

CBP finds an SUV loaded with meth; AMO seizes nearly 2000 kilos of cocaine.

CBP seizes $500K worth of coke; HSI arrests an importer of illegal pills.

CBP and HSI track 25,000 ecstasy pills bound for Philadelphia from Germany.

CBP finds 100 kilos of coke in a banana shipment bound for a Philly bodega.

CBP detains a man suspected of swallowing drugs; AMO agents find $51 million of coke.

LA HSI executes undercover drug buys; CBP intercepts Coyotes at the border.

SD HSI follows a loaded car; CBP and HSI test out a drug detection device.

Customs and Border Protection finds $1 million of cocaine in a cargo truck; Homeland Security Investigations cracks down on a date rape drug.

HSI finds overcrowded human stash houses; CBP discovers meth in machinery.

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.

Customs and Border Protection finds $1 million of cocaine in a cargo truck; Homeland Security Investigations cracks down on a date rape drug.

HSI finds overcrowded human stash houses; CBP discovers meth in machinery.

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.

CBP finds an SUV loaded with meth; AMO seizes nearly 2000 kilos of cocaine.

CBP seizes $500K worth of coke; HSI arrests an importer of illegal pills.

CBP and HSI track 25,000 ecstasy pills bound for Philadelphia from Germany.

CBP finds 100 kilos of coke in a banana shipment bound for a Philly bodega.

A tourist's uncertain vacation plans make him suspicious; two backpackers return with more than just memories; in Port Huron, a traveler carries a concealed weapon.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Lisa Kelly and Steph Custance team up for a challenging passage on the icy terrain; Art Burke brings a split load into the north country, hoping this will be his last load of the year; Todd Dewey hauls a double oversized camp shack.

Stories from London's National Maritime Museum include the shooting of Admiral Horatio Nelson, the capture of pirates, Captain Bligh's commandeering of a lifeboat and lightning strikes at sea.

Adam and Duane are forced to work things out on a flight to Alert, Earth's northernmost settlement.

A tourist's uncertain vacation plans make him suspicious; two backpackers return with more than just memories; in Port Huron, a traveler carries a concealed weapon.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Mariana exposes the dangers of the growing and deadly ghost guns industry.

Mariana investigates the lucrative black market for private data.

Enhanced: Mariana follows the booming MDMA supply chain.

Mariana journeys into gangland to understand the violence plaguing LA.

Mariana investigates how illicit oil is fueling terrorist groups worldwide.

Mariana embeds with crypto scammers who show her how they make millions.

Mariana investigates the growing popularity of bare-knuckle fighting.

Mariana explores surrogacy's dark side; a babies-for-cash black market.

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

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.

Mariana explores surrogacy's dark side; a babies-for-cash black market.

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

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.

Mariana exposes the dangers of the growing and deadly ghost guns industry.

Mariana investigates the lucrative black market for private data.

Enhanced: Mariana follows the booming MDMA supply chain.

Mariana journeys into gangland to understand the violence plaguing LA.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Suspected of smuggling narcotics, a jittery traveler's next stop is a medical facility; a pair arrives bearing a trophy; CBP question a DJ's find.

An Asian woman arrives with an American man who is not her husband; CBP discover a large collection of vapes and vape oils in a traveler's luggage; an officer discovers undeclared items belonging to an American couple returning from Europe.

Drivers head out one last time during the spring thaw; Steph Custance slides into trees; Todd Dewey struggles with a load on a twisty trail; Art Burke retrieves a heavy bulldozer; Reno Ward's truck dies on the ice; Lisa Kelly gets an emergency call.

Festive gladiators, whispering camel herders and the water demands of ancient Romans are among the stories found in the National Bardo Museum in Tunis, Tunisia.

Joe finds out that Gord has taken a job with a rival airline; while training on the C-46, Larry makes a near fatal error.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Cameras follow U.S. border protection agencies as they man the front lines of national security.

Suspected of smuggling narcotics, a jittery traveler's next stop is a medical facility; a pair arrives bearing a trophy; CBP question a DJ's find.

An Asian woman arrives with an American man who is not her husband; CBP discover a large collection of vapes and vape oils in a traveler's luggage; an officer discovers undeclared items belonging to an American couple returning from Europe.

Alaskans use unorthodox methods in order to survive harsh winter.

Alaskans use limited resources to survive the brutal Arctic elements.

Sometimes being a little crazy helps to overcome challenges.

Arctic survival forces adaptation on the lives of Alaskans.

Deep winter has Alaskans desperately seeking resources to survive.

Up against countless obstacles, rural Alaskans must work hard to survive.

Alaskans must overcome life-threatening obstacles to endure dark winter.

Arctic survival breeds ingenuity in the lives of Alaskans.

Wildlife activists Benhail Antao and Louise Remedios attempt to rescue two enormous Indian rock pythons that fell into a well.

Wildlife activists Benhail Antao and Louise Remedios scramble to save a python, a rat snake and an Indian spectacled cobra in three different locations.

A maverick scientist begins his quest to find a shipwreck full of gold.

Arctic survival breeds ingenuity in the lives of Alaskans.

Wildlife activists Benhail Antao and Louise Remedios attempt to rescue two enormous Indian rock pythons that fell into a well.

Wildlife activists Benhail Antao and Louise Remedios scramble to save a python, a rat snake and an Indian spectacled cobra in three different locations.

A maverick scientist begins his quest to find a shipwreck full of gold.

Alaskans use unorthodox methods in order to survive harsh winter.

Alaskans use limited resources to survive the brutal Arctic elements.

Sometimes being a little crazy helps to overcome challenges.

Arctic survival forces adaptation on the lives of Alaskans.

A traveler is suspected of smuggling cocaine; an officer questions a traveler with low funds and a lengthy travel plan; a family from Canada traveling with a puppy is barking up the wrong tree.

CBP has beef with a traveler when they discover undeclared meat in his fiancé's luggage.

In Buffalo, officers search the vehicle of an American permanent resident; CBP are perplexed by a batch of ceramic pastries.

A family risks losing their stacks of cash; officers are on high alert after an American declares he is packing heat; CBP suspect a traveler is pulling a con job with his US work visa.

Reigning champ Polar Industries returns, and is looking to maintain its dominance by any means necessary; trucking rival Darrell Ward poaches an ice road legend out from the grips of Polar Industries.

Find out how an Egyptian baby died 2000 years ago, as this tiny mummy is unwrapped.

Duane wins two more Electra contracts; Tyler learns landing the DC-3 takes practice.

A traveler is suspected of smuggling cocaine; an officer questions a traveler with low funds and a lengthy travel plan; a family from Canada traveling with a puppy is barking up the wrong tree.

CBP has beef with a traveler when they discover undeclared meat in his fiancé's luggage.

In Buffalo, officers search the vehicle of an American permanent resident; CBP are perplexed by a batch of ceramic pastries.

A family risks losing their stacks of cash; officers are on high alert after an American declares he is packing heat; CBP suspect a traveler is pulling a con job with his US work visa.

Dr. Nicole tends to her old, beloved beagle, and it's all hands on deck for a litter of 11 puppies.

Clinic house cat, Tater, falls ill and the team bands together to save him.

An ice storm shuts down the clinic, and newborn labs are melting hearts.

Doctors from Pol Veterinary Services rush to help a distressed cow and her calf.

The vets tackle a twisted calving, a flock of ducks and a pack of rats.

Pets in a jam with quills, fishhooks, and string go to PVS to get unstuck.

There's no time to rest with emergency calvings, rowdy pups, and ailing felines.

In this enhanced episode, Doc and Diane welcome a new filly to the family.

In this extended version, two violent dogs continue to threaten each other.

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

In this enhanced episode, Doc and Diane welcome a new filly to the family.

In this extended version, two violent dogs continue to threaten each other.

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

Dr. Nicole tends to her old, beloved beagle, and it's all hands on deck for a litter of 11 puppies.

Clinic house cat, Tater, falls ill and the team bands together to save him.

An ice storm shuts down the clinic, and newborn labs are melting hearts.

Doctors from Pol Veterinary Services rush to help a distressed cow and her calf.

A CBP canine tracks a THC-toting traveler.

A traveler isn't blowing smoke when it comes to declaring her cigarettes.

A South American surfer's vague travel plans make waves with CBP.

A CBP canine is on the hunt for concealed contraband.

Art Burke has to cross one of the longest winter roads in the world; Todd Dewey, must dig himself out of mountains of fresh snow or risk a dangerous night in freezing temperatures.

Prehistoric Britains; killer shark; famous gem that kills; WWII spies; Barbary Lions; a Dodo bird.

The completion of a major contract is in jeopardy when Duane leaves the crew to spend time at home.

A CBP canine tracks a THC-toting traveler.

A traveler isn't blowing smoke when it comes to declaring her cigarettes.

A South American surfer's vague travel plans make waves with CBP.

A CBP canine is on the hunt for concealed contraband.

Gordon and his daughter Tilly explore centuries-old culinary traditions in Galicia, a largely overlooked but magnificent corner of Spain.

Gordon uncovers treasures of land and sea on Ireland's Connemara Coast.

Gordon explores England's southwest coast to find culinary gems in his own backyard.

Gordon explores the wilds of Wales to discover the rustic ingredients.

Gordon Ramsay and his daughter Tilly face off in a Costa Rican culinary showdown.

Gordon embraces local ingenuity as he fishes and forages through Cuba.

Gordon dives into the culinary ocean of the Florida Keys.

Cats enjoy a spa day, an iguana takes a ride, and a seal surfs a wave.

These tall, bark and handsome canines have a date with Dr. Michelle Oakley.

Elephants date, a pony gets a dream job, and a gorilla battles ill health.

Cats enjoy a spa day, an iguana takes a ride, and a seal surfs a wave.

These tall, bark and handsome canines have a date with Dr. Michelle Oakley.

Elephants date, a pony gets a dream job, and a gorilla battles ill health.

Gordon and his daughter Tilly explore centuries-old culinary traditions in Galicia, a largely overlooked but magnificent corner of Spain.

Gordon uncovers treasures of land and sea on Ireland's Connemara Coast.

Gordon explores England's southwest coast to find culinary gems in his own backyard.

Gordon explores the wilds of Wales to discover the rustic ingredients.

Todd goes on a risky run to deliver the heaviest haul in company history; Art's sent on a high stakes rescue mission; Lisa gets an exclusive contract; Darrell steals a load from Polar.

New keepers run their first bird show; a blind girl gets hands-on with snakes.

Zoo vet Graham's favorite animal says goodbye.

Todd goes on a risky run to deliver the heaviest haul in company history; Art's sent on a high stakes rescue mission; Lisa gets an exclusive contract; Darrell steals a load from Polar.

New keepers run their first bird show; a blind girl gets hands-on with snakes.

Zoo vet Graham's favorite animal says goodbye.

Wildlife activists Benhail Antao and Louise Remedios discover an Indian spectacled cobra stuck in a well. Ben descends the well using a winch installed in his SUV to rescue it.

Wildlife activists Benhail Antao and Louise Remedios receive a distress call that a snake has bitten two pet dogs. They rush to the scene and find out that the culprit is an enormous Indian spectacled cobra.

Ben and Louise are inundated with a high volume of calls in a short period of time. On their first location, they come across two lethal snakes.

Wildlife activists Benhail Antao and Louise Remedios set out on a nerve-wracking mission to catch a deadly Indian krait.

Wildlife activists Benhail Antao and Louise Remedios attempt to rescue two enormous Indian rock pythons that fell into a well.

Wildlife activists Benhail Antao and Louise Remedios scramble to save a python, a rat snake and an Indian spectacled cobra in three different locations.

The docs lean on their vet techs to save a beloved sick chicken, help a giant schnauzer, and acclimate some wild bass to a new home.

The docs see a goat with severe bloating, a boa constrictor that refuses to feed, and a turtle infected with parasitic "vampire worms.".

The Docs at Critter Fixer treat a rescued pigeon with a surprising injury.

The Docs at Critter Fixer attempt to remove an egg from a cockatiel.

The docs at Critter Fixer attempt to MacGyver a turtle's broken shell.

The Docs at Critter Fixer provide inspiration to animals and humans alike.

The docs get up close and personal with venomous snakes, help a dog whose face droops, and send a diabetic canine on the road to recovery.

The docs at Critter Fixer remove record-breaking kidney stones from a dog.

A new Pol family member is born.

A critically endangered antelope is losing weight fast and needs urgent surgery; a baby rhino takes her first steps out on the savannah.

The docs at Critter Fixer remove record-breaking kidney stones from a dog.

A new Pol family member is born.

A critically endangered antelope is losing weight fast and needs urgent surgery; a baby rhino takes her first steps out on the savannah.

Wildlife activists Benhail Antao and Louise Remedios discover an Indian spectacled cobra stuck in a well. Ben descends the well using a winch installed in his SUV to rescue it.

Wildlife activists Benhail Antao and Louise Remedios receive a distress call that a snake has bitten two pet dogs. They rush to the scene and find out that the culprit is an enormous Indian spectacled cobra.

Ben and Louise are inundated with a high volume of calls in a short period of time. On their first location, they come across two lethal snakes.

Wildlife activists Benhail Antao and Louise Remedios set out on a nerve-wracking mission to catch a deadly Indian krait.

Wildlife activists Benhail Antao and Louise Remedios attempt to rescue two enormous Indian rock pythons that fell into a well.

Wildlife activists Benhail Antao and Louise Remedios scramble to save a python, a rat snake and an Indian spectacled cobra in three different locations.

The docs lean on their vet techs to save a beloved sick chicken, help a giant schnauzer, and acclimate some wild bass to a new home.

Polar boss Mark Kohaykewych mixes things up when he brings new soldier Mike Simmons into the winter roads battle; Todd Dewey and rival Darrell Ward both hit a newly opened trail.

After more than 20 years, Luisa says goodbye to the zoo; Doowi and Quammbi settle in.

The vets tend to a moose's sore ankle; a peek inside some turtle eggs.

Polar boss Mark Kohaykewych mixes things up when he brings new soldier Mike Simmons into the winter roads battle; Todd Dewey and rival Darrell Ward both hit a newly opened trail.

After more than 20 years, Luisa says goodbye to the zoo; Doowi and Quammbi settle in.

The vets tend to a moose's sore ankle; a peek inside some turtle eggs.

A wild stallion gets a manicure; a rare species breeds successfully.

The world's largest lizard arrives at the zoo.

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

Three real-world disasters dissected; in space, in a hotel, on a bridge.

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

Three real disasters dissected; a high-rise, a submarine and a subway station.

Three real disasters analyzed: a nuclear plant, a tunnel and a department store.

Three real world disasters dissected; in space, on a train, in a high-rise.

Three real world disasters dissected; nuclear missile, ferry, oil rig.

Three real-world disasters forensically dissected: Lac-Mégantic train crash, Imperial Sugar refinery explosion, 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.

Tim Shaw and Fuzz Townshend undertake dramatic automobile interventions across the U.K.

Gold and silver artifacts discovered in Laos leads to ancient sites of worship in the early days of the Khmer Empire.

The filmmakers use state-of-the-art technology to showcase an aerial journey across Europe and reveal things that are not easily seen from the ground.

Tim Shaw and Fuzz Townshend undertake dramatic automobile interventions across the U.K.

Gold and silver artifacts discovered in Laos leads to ancient sites of worship in the early days of the Khmer Empire.

The filmmakers use state-of-the-art technology to showcase an aerial journey across Europe and reveal things that are not easily seen from the ground.

Three real-world disasters dissected; in space, in a hotel, on a bridge.

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

Three real disasters dissected; a high-rise, a submarine and a subway station.

Three real disasters analyzed: a nuclear plant, a tunnel and a department store.

Planning a surprise visit to a married man could cause one traveler to be left at the airport; shocked by an undeclared stun gun, CBP race against time to find the owner before the plane boards.

Customs and immigration officials work to protect their borders.

Customs and immigration officials work to protect their borders.

Two travelers on a world tour are questioned about their packs, plans and partygoing; at Port Huron, a woman hoping to meet her boyfriend for the first time is scrutinized over the contents in her car.

Polar's top dog Todd Dewey gets into trouble with a government contract; truck problems have Polar driver Art Burke's season headed for the gutter; ice road rookie Mike Simmons has his first solo delivery.

A chase of the thief who stole the Mona Lisa and how it was recovered.

Searching for impressive finds in Winnipeg; Scott involves his two sons in the action.

Planning a surprise visit to a married man could cause one traveler to be left at the airport; shocked by an undeclared stun gun, CBP race against time to find the owner before the plane boards.

Customs and immigration officials work to protect their borders.

Customs and immigration officials work to protect their borders.

Two travelers on a world tour are questioned about their packs, plans and partygoing; at Port Huron, a woman hoping to meet her boyfriend for the first time is scrutinized over the contents in her car.

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 Colombia chases illegal gold; CBP thwarts cartel activity in Texas.

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

HSI runs a human trafficking sting; CBP arrests a domestic terror suspect.

HSI surprises coke smugglers mid-handoff; CBP finds cash and ketamine.

A mom with kids in tow smuggles coke; AMO shoots out a drug boat's motor.

HSI runs down a drug smuggler in a parking lot; CBP finds ancient artifacts.

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

A mom with kids in tow smuggles coke; AMO shoots out a drug boat's motor.

HSI runs down a drug smuggler in a parking lot; CBP finds ancient artifacts.

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

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 Colombia chases illegal gold; CBP thwarts cartel activity in Texas.

In Boston, CPB stick their necks out to ask about a bottle of ostrich oil; in Detroit, a Canadian law student must explain why her car smells like marijuana.

A dentist from Kiev hopes for an extended stay in the U.S. after fleeing war in her home country; at the Detroit Border, a case of mistaken identity causes alarm; in Chicago, a metaphysical healer wishes a CBP officer good vibes.

A dentist from Kiev hopes for an extended stay in the U.S. after fleeing war in her home country; a traveler headed to Vegas points to a friend as the source of the extra cash he's carrying.

A Canadian landscaper forgets to tell CBP about his imminent flight; a trucker's day goes sideways when he makes a wrong turn and ends up at the border; at Chicago O'Hare a traveler is irate when he's taken to secondary.

Darrell Ward and Lisa Kelly work to make good on a power play for their young company but could lose it all when Darrell's truck breaks down; Polar driver Todd Dewey has to backtrack hundreds of miles to recover lost freight.

Discover the secrets behind the scenes at the Vatican Museum.

Scott and Sheldon visit Regina, Avonlea and Moose Jaw as a mysterious treasure map leads them through Saskatchewan.

In Boston, CPB stick their necks out to ask about a bottle of ostrich oil; in Detroit, a Canadian law student must explain why her car smells like marijuana.

A dentist from Kiev hopes for an extended stay in the U.S. after fleeing war in her home country; at the Detroit Border, a case of mistaken identity causes alarm; in Chicago, a metaphysical healer wishes a CBP officer good vibes.

A dentist from Kiev hopes for an extended stay in the U.S. after fleeing war in her home country; a traveler headed to Vegas points to a friend as the source of the extra cash he's carrying.

A Canadian landscaper forgets to tell CBP about his imminent flight; a trucker's day goes sideways when he makes a wrong turn and ends up at the border; at Chicago O'Hare a traveler is irate when he's taken to secondary.

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

Mariana investigates the dangerous, high-stakes world of illegal gambling.

Mariana heads to the Congo to investigate the illegal trading of wild apes that have 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.

Mariana investigates a scam that tricks seniors into becoming drug mules.

To be announced.

Sarah McNair Landry and her brother Eric share their story of kite-skiing the Northwest Passage in winter only to be hunted by polar bears.

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.

Mariana investigates a scam that tricks seniors into becoming drug mules.

The octopus is like an alien on Earth but with shapeshifting superpowers.

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

Mariana investigates the dangerous, high-stakes world of illegal gambling.

Mariana heads to the Congo to investigate the illegal trading of wild apes that have 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.

A traveler with bags full of counterfeit merchandise isn't bothered by CBP's probing questions; a woman crossing the border finds herself in a salty situation; a journalist hoping to visit the US on vacation is interviewed about his work prospects.

Two women returning from a tropical vacation are questioned; at JFK cargo facility, a bounty of gold jewelry is apprehended when the manifesto seems to sell its value short; Baily the dog has a big day.

A traveler headed to Vegas rolls the dice on getting into the US for a vacation; a family immigrating from Vietnam hope their enthusiasm translates; at JFK cargo facility, boxes of pancake mix fall flat.

A man from Mexico is questioned when it is indicated his vacation plans may include a work component; at JFK cargo facility a shipment of live moth pupas is put under the microscope; in San Francisco, an angry traveler points a finger at CBP.

Art Burke attempts to keep his rig above ground on a melting ice crossing; polar driver Alex Debogorski battles his way up a mud covered mountain.

Searching for Ramesses' tomb; re-creating the last moments of an ancient king's life.

The Pickers rummage through central Saskatchewan, scoring vintage pistols, antique toys and an inflatable Coca-Cola display; Scott challenges Sheldon to a driving showdown.

A traveler with bags full of counterfeit merchandise isn't bothered by CBP's probing questions; a woman crossing the border finds herself in a salty situation; a journalist hoping to visit the US on vacation is interviewed about his work prospects.

Two women returning from a tropical vacation are questioned; at JFK cargo facility, a bounty of gold jewelry is apprehended when the manifesto seems to sell its value short; Baily the dog has a big day.

A traveler headed to Vegas rolls the dice on getting into the US for a vacation; a family immigrating from Vietnam hope their enthusiasm translates; at JFK cargo facility, boxes of pancake mix fall flat.

A man from Mexico is questioned when it is indicated his vacation plans may include a work component; at JFK cargo facility a shipment of live moth pupas is put under the microscope; in San Francisco, an angry traveler points a finger at CBP.

On the cusp of winter, Indigenous peoples of Alaska work to secure food and safety for the brutal season ahead.

Alaska Natives battle the seas of the arctic as winter looms.

Alaska Natives battle the seas of the arctic as winter looms.

For the Indigenous Peoples of Alaska, giving up is never an option.

In harsh climates, the land becomes a survival resource for Alaska Natives.

The unpredictability of the arctic in winter challenges Alaska natives.