AMO discovers over 80 kilos of cocaine washed ashore in St. Thomas.

Features HSI running multiple undercover drug deals; CBP discovers coke hidden in oatmeal.

With big plans for the future, Oliver sets out to bring home some massive cedar trees that will help him turn his float house home into a kingdom.

AMO seizes over 280 kilos of cocaine and $750,000 from smuggling vessels.

Caribbean AMO agents bust a smuggling ring and seize 1300 kilos of cocaine.

HSI arrests 37 gang members; AMO seizes $5.4 million worth of cocaine.

HSI arrests drug traffickers; AMO seizes $13.2 million of coke on a beach.

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.

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.

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

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

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.

A woman and her son encounter the legendary Jersey Devil; a giant reptile terrorizes a South Carolina town; a creature resembling a werewolf is spotted in Wisconsin.

Lost and found workers return a bag full of old family photos and a wallet.

Airport workers reunite travelers with competitive ballroom dresses and a headphone case holding $1,200 but must auction an unclaimed bag of jewelry.

Airport workers attempt to locate a cat who escaped from its carrier on the tarmac; Alabama's unclaimed baggage store finds a Fendi runway dress.

Vintage Jordans, a mobile barber van and a stuffed animal are left behind.

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

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

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

Emergency services evacuate passengers from a stranded train without power.

Australia is home to weird and wonderful creatures that have evolved extraordinary adaptations due to being isolated from the rest of the world.

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

Emergency services evacuate passengers from a stranded train without power.

Australia is home to weird and wonderful creatures that have evolved extraordinary adaptations due to being isolated from the rest of the world.

Lost and found workers return a bag full of old family photos and a wallet.

Airport workers reunite travelers with competitive ballroom dresses and a headphone case holding $1,200 but must auction an unclaimed bag of jewelry.

Airport workers attempt to locate a cat who escaped from its carrier on the tarmac; Alabama's unclaimed baggage store finds a Fendi runway dress.

Vintage Jordans, a mobile barber van and a stuffed animal are left behind.

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.

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.

Harsh flying conditions threaten the search for a historic missing plane.

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.

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.

A Mexican rancher kills a strange creature; an Arizona woman claims she is the daughter of an alien; extraterrestrials are befriended by a serviceman.

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 1970s, it is going to be no easy task, as there are only two others on the road in the UK.

Tim and Fuzz work to rescue a Frogeye Sprite hidden in a garage for over 50 years, now rusted, seized, and falling apart.

Tim and Fuzz tackle one tough challenge, a Mk1 Golf GTi owned by one big VW fan in Birmingham, England; unlike their previous builds, this isn't a typical restoration.

Tim and Fuzz take on Raymond's 1990 Nissan Pulsar GTI-R, the build he cannot finish due to ill health.

Tim and Fuzz take on a crumbling Mini Mayfair bought by Donna with her late father's inheritance; Dreaming of a Cooper, she ended up with a rust-ridden wreck, and ill health put a stop to any hopes of restoration; Now the boys must rebuild what is left and transform it into the ultimate Cooper tribute, with help from the Cooper family themselves.

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

Australia's coastline is a true natural wonder, encompassing bountiful habitats where mesmerizing and surprising creatures reign supreme.

Tim and Fuzz take on a crumbling Mini Mayfair bought by Donna with her late father's inheritance; Dreaming of a Cooper, she ended up with a rust-ridden wreck, and ill health put a stop to any hopes of restoration; Now the boys must rebuild what is left and transform it into the ultimate Cooper tribute, with help from the Cooper family themselves.

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

Australia's coastline is a true natural wonder, encompassing bountiful habitats where mesmerizing and surprising creatures reign supreme.

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 1970s, it is going to be no easy task, as there are only two others on the road in the UK.

Tim and Fuzz work to rescue a Frogeye Sprite hidden in a garage for over 50 years, now rusted, seized, and falling apart.

A one-way ticket raises red flags; a traveler is caught with undeclared meat; officers find a loaded gun and live crab.

Officers find white powder in tea sacks; pills marked ICE are frozen; some furry foreigners arrive to spread good will.

A traveler is caught with cocaine-filled pen caps; a long stay alerts CBP; a probation-breaking welder feels the heat.

A fake ID comes to light at the border; a young traveler's stories don't jibe; CBP hounds sniff out forbidden food.

Lisa Kelly finds herself in a real jam after jackknifing her truck deep in the back-country; Alex Debogorski gets more than he bargained for when he falls through a patch of thin ice; Todd Dewey comes to the aid of a stranded trucker.

Devastating flash floods threaten Dawson City.

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

A one-way ticket raises red flags; a traveler is caught with undeclared meat; officers find a loaded gun and live crab.

Officers find white powder in tea sacks; pills marked ICE are frozen; some furry foreigners arrive to spread good will.

A traveler is caught with cocaine-filled pen caps; a long stay alerts CBP; a probation-breaking welder feels the heat.

A fake ID comes to light at the border; a young traveler's stories don't jibe; CBP hounds sniff out forbidden food.

A painting is reportedly linked to a series of house fires in Britain; a malevolent doll ruins lives; a California heiress begins a bizarre construction project.

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.

A group of wild sea turtles needs medical attention before being released back into the sea; a rhino receives special treatment after cracking his horn; a zebra gives birth.

Experts reveal what happens when wild animals decide to invade humans, from bears taking a dip in a hot tub to raccoons raiding kitchens.

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

A group of wild sea turtles needs medical attention before being released back into the sea; a rhino receives special treatment after cracking his horn; a zebra gives birth.

Experts reveal what happens when wild animals decide to invade humans, from bears taking a dip in a hot tub to raccoons raiding kitchens.

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

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.

Officers find a stash of luxury knockoffs; a drag race fan slows his roll; CBP catches a wanted duo.

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 face-off develops over luxury counterfeits; agents detect potentially lethal powder; a CBP beagle finds the mother lode of meat.

A sudden warm-up threatens to derail the ice road season; Art Burke faces scary and slick roads; Lisa Kelly is forced to ask her former boss for financial help; Alex Debogorski encounters a mystery man walking alone on an isolated winter road.

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

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.

Officers find a stash of luxury knockoffs; a drag race fan slows his roll; CBP catches a wanted duo.

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 face-off develops over luxury counterfeits; agents detect potentially lethal powder; a CBP beagle finds the mother lode of meat.

An octopus correctly selects winning teams in a soccer tournament; dogs leap off a Scottish bridge to their deaths; a lost cat makes a cross-country journey.

The ingenious fortress designs used to defend France.

Spain's impressive fortifications in a dramatic history of conflict.

Interviews and rare footage document the 1915 Turkish slaughter of Armenians.

Force K6, an Indian regiment of mule handlers in WW2, aided Allied evacuation at Dunkirk, other units escaped Nazi-occupied France.

The stories of three Black sailors, who not only miraculously survived the attack on Pearl Harbor, but also saved countless lives.

Unearthing the hidden heroes of the 320th Barrage Balloon Battalion, the only all-Black combat unit to fight on the D-Day beaches to help liberate Europe.

The Black Panthers, an elite tank unit, push back Hitler's final advance.

Los Angeles offers everything associated with happiness - fame and fortune, sun and surf - but for Rainn, LA has never been a very happy place; alongside sugar-rushed partygoers and a Yoda in tennis shoes, Rainn looks for bliss in his own backyard.

Bertie searches the islands of Indonesia for an elusive devil ray.

The Black Panthers, an elite tank unit, push back Hitler's final advance.

Los Angeles offers everything associated with happiness - fame and fortune, sun and surf - but for Rainn, LA has never been a very happy place; alongside sugar-rushed partygoers and a Yoda in tennis shoes, Rainn looks for bliss in his own backyard.

Bertie searches the islands of Indonesia for an elusive devil ray.

The ingenious fortress designs used to defend France.

Spain's impressive fortifications in a dramatic history of conflict.

Interviews and rare footage document the 1915 Turkish slaughter of Armenians.

Force K6, an Indian regiment of mule handlers in WW2, aided Allied evacuation at Dunkirk, other units escaped Nazi-occupied France.

A blast of arctic air reopens the ice roads; Steph Custance falls victim to severe icing and winds up in a ditch; truckers set out to see if the newly reopened ice crossings are really ready for their big rigs.

Polar Industries must deliver an oversized load hundreds of miles north on the winter roads; owner Mark Koyhaykewych recruits Lisa Kelly, then calls in Reno Ward, the 23-year-old son of the late Darrell Ward; a blizzard adds a new layer of danger.

A blast of arctic air reopens the ice roads; Steph Custance falls victim to severe icing and winds up in a ditch; truckers set out to see if the newly reopened ice crossings are really ready for their big rigs.

Polar Industries must deliver an oversized load hundreds of miles north on the winter roads; owner Mark Koyhaykewych recruits Lisa Kelly, then calls in Reno Ward, the 23-year-old son of the late Darrell Ward; a blizzard adds a new layer of danger.

A desert tortoise needs life-saving surgery; a male prairie dog has a little problem down below; a beloved bunny has a major issue with his anesthesia.

A beloved squirrel travels hundreds of miles to see Dr. K; a goat has some serious udder trouble; Dyanne's bunny needs help.

An owl monkey, opossum and coyote come to the clinic.

Dr. K sees a macaw with a broken wing; a bearded dragon is rushed in as an emergency.

Tonga the Lemur comes into the clinic to be spayed; a young rabbit gets a CT scan; a koi fish sees about a mass.

A prairie dog comes in for an examination after he mysteriously loses his top teeth.

Dr. T and Dyanne are called out to a nature center to examine a male peacock.

Hubble, a crested gecko, comes rushing into the clinic after being attacked by the family dog.

Two emergencies and two surgeries make for a busy day at Dr. K's clinic.

Dr. K and her staff have their hands full with unusual cases that are difficult to solve.

The staff treats a sushi eating-squirrel monkey, a cockatiel and a pregnant rabbit.

The team investigates a shark bite in Australia.

Diva uncovers a cluster of shark bites which happened across the world, all within a few days of each other; the team get to work scouring the world for clues to uncover the reasons that connect them.

The staff treats a sushi eating-squirrel monkey, a cockatiel and a pregnant rabbit.

The team investigates a shark bite in Australia.

Diva uncovers a cluster of shark bites which happened across the world, all within a few days of each other; the team get to work scouring the world for clues to uncover the reasons that connect them.

Dr. K sees a macaw with a broken wing; a bearded dragon is rushed in as an emergency.

Tonga the Lemur comes into the clinic to be spayed; a young rabbit gets a CT scan; a koi fish sees about a mass.

A prairie dog comes in for an examination after he mysteriously loses his top teeth.

Dr. T and Dyanne are called out to a nature center to examine a male peacock.

A small convoy heads out with an oversized load; Lisa Kelly and Reno Ward's skills are tested by the treacherous journey; Art Burke attempts to navigate an ice road over a frozen lake; Alex Debogorski stops to help a stranded trucker.

Reno Ward has a disastrous encounter with a speeding pick-up truck; Lisa Kelly attempts to rescue Reno but is forced to leave him to fend for himself; Art Burke attempts to deliver a Zamboni to save an isolated community's hockey season.

A small convoy heads out with an oversized load; Lisa Kelly and Reno Ward's skills are tested by the treacherous journey; Art Burke attempts to navigate an ice road over a frozen lake; Alex Debogorski stops to help a stranded trucker.

Reno Ward has a disastrous encounter with a speeding pick-up truck; Lisa Kelly attempts to rescue Reno but is forced to leave him to fend for himself; Art Burke attempts to deliver a Zamboni to save an isolated community's hockey season.

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

Shark attacks are rare along the northern California coast until seven attacks in 2020 and 2021 leave investigators racing to find a cause.

An unprecedented surge of six shark attacks in just three weeks rocks the popular beaches of New York on one of their busiest days of the year.

In 2021, a spate of seven shark attacks rocks Florida's Treasure Coast, and beach goers want to know why.

An unexpected and mysterious shark species bites beachgoers in Australia.

Experts investigate the first shark attacks ever recorded on Bali's coast.

Every October, shark attacks in Hawaii double; what's behind "Sharktober.".

A series of fatal attacks rocks the South Pacific paradise of New Caledonia.

Five shark attacks in just two summers has South Carolinians scared.

Interviews, outtakes and never-before-seen footage provide insight into the chaos and creativity behind the making of Steven Spielberg's legendary blockbuster "Jaws.".

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

Experts and comics react to viral shark videos, along with pop-up facts.

Scientists investigate the giant tiger sharks of Norfolk Island.

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

Experts and comics react to viral shark videos, along with pop-up facts.

An unexpected and mysterious shark species bites beachgoers in Australia.

Experts investigate the first shark attacks ever recorded on Bali's coast.

Every October, shark attacks in Hawaii double; what's behind "Sharktober.".

A series of fatal attacks rocks the South Pacific paradise of New Caledonia.

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 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.

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

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.

Ken's wife gets some surprising news when she arrives for a visit; Big Al has trouble with his excavator; Karl's season is threatened by permafrost.

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 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.

Crew members killed in a deadly airplane accident are spotted on another flight; a painting is blamed for an attack on a child; a ghost attacks a New Zealand man.

Brazen attacks targeting people; seeing if sharks are competing with humans for food.

Scientists race to understand what exactly makes sharks so stealthy to save lives.

Experts investigate why most shark attack victims are men.

Investigators explore why sharks are attacking people in cities.

Scientists try to uncover why pregnant sharks seem more likely to attack.

Sharks are the perfect predator; seeing if humans can learn to outsmart sharks.

Investigators examine some unusual suspects in mysterious shark attacks.

Looking to see if there is a connection between shipwrecks and shark attacks.

Ultra-athlete Ross Edgley pits himself against four legendary sharks.

Scientists race to understand what exactly makes sharks so stealthy to save lives.

Looking to see if there is a connection between shipwrecks and shark attacks.

Ultra-athlete Ross Edgley pits himself against four legendary sharks.

Brazen attacks targeting people; seeing if sharks are competing with humans for food.

Scientists race to understand what exactly makes sharks so stealthy to save lives.

Experts investigate why most shark attack victims are men.

Investigators explore why sharks are attacking people in cities.

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.

At the American border, agents question an African traveler with a one-way ticket; in Detroit, a passenger receives a special surprise; officers wait for a drug-smuggler to expel a pack of cocaine.

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

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.

Dennis' hunt for gold proves unsuccessful; Ken breaks a machine in his haste to sluice; Karl's season is threatened by floods.

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.

At the American border, agents question an African traveler with a one-way ticket; in Detroit, a passenger receives a special surprise; officers wait for a drug-smuggler to expel a pack of cocaine.

A man predicts a deadly plane crash before it happens; a child has a premonition of a volcanic eruption; a California man foretells major U.S. events.

Experts investigate the first shark attacks ever recorded on Bali's coast.

Every October, shark attacks in Hawaii double; what's behind sharktober?

A series of attacks rocks the South Pacific paradise of New Caledonia.

Five shark attacks in just two summers scare South Carolinians.

In the Bahamas, over 30% of dolphins have shark bite scars; using a non-toxic gel bite pad and a life-sized dolphin lure, a look at bite impressions of three species that could be predators.

Fresh pop-up facts and vivid graphics magnify a series of attacks in Australia.

Special edition pop-up facts and graphics aid research into surfing attacks.

Special pop-up facts and graphics unpack bull sharks in unexpected waters.

Special edition pop-up facts and graphics reveal emerging shark attack hotspots.

Experts and comics react to viral shark videos, along with pop-up facts.

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

Sharks steal fish from fishing lines; Mackie learns of these cases from locals, but discovers that they indicate larger environmental problems in the Gulf of Mexico.

Experts and comics react to viral shark videos, along with pop-up facts.

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

Experts investigate the first shark attacks ever recorded on Bali's coast.

Every October, shark attacks in Hawaii double; what's behind sharktober?

A series of attacks rocks the South Pacific paradise of New Caledonia.

Five shark attacks in just two summers scare South Carolinians.

In the Bahamas, over 30% of dolphins have shark bite scars; using a non-toxic gel bite pad and a life-sized dolphin lure, a look at bite impressions of three species that could be predators.

Fresh pop-up facts and vivid graphics magnify a series of attacks in Australia.

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.

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.

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

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.

Ken takes a roll in his bulldozer; beavers threaten Big Al's operation; Karl's loader springs a leak.

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.

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.

Three men disappear from a yacht in Australia; people vanish from a remote Vermont mountaintop; a pilot is stalked by unidentified aircraft.

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

In 2007, Los Angeles was in shock when four shark attacks happened in just three months.

Hawaii is shaken by three bizarre shark attacks in less than five months.

Ten shark attacks leave visitors reeling off Florida's Space Coast in 2003.

Two unlucky ocean lovers encounter sharks on two different occasions.

Investigators seek the cause behind a strange surge of shark attacks in Texas.

Three brutal shark attacks in the Abaco Islands in just thirty-nine days.

Bertie Gregory decides to journey to South Africa to go swimming and diving with some great white sharks.

How the giant megalodon shark took over the oceans.

Scientists investigate the giant tiger sharks of Norfolk Island.

With bonus content, Anthony Mackie investigates sharks in Louisiana.

Bertie Gregory decides to journey to South Africa to go swimming and diving with some great white sharks.

With bonus content, Anthony Mackie investigates sharks in Louisiana.

With bonus content, Anthony Mackie investigates sharks in Louisiana.

Bertie Gregory decides to journey to South Africa to go swimming and diving with some great white sharks.

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

In 2007, Los Angeles was in shock when four shark attacks happened in just three months.

Hawaii is shaken by three bizarre shark attacks in less than five months.

Ten shark attacks leave visitors reeling off Florida's Space Coast in 2003.

Two unlucky ocean lovers encounter sharks on two different occasions.

Investigators seek the cause behind a strange surge of shark attacks in Texas.

Three brutal shark attacks in the Abaco Islands in just thirty-nine days.

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.

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 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.

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.

Ken battles frigid conditions and disappointing returns; an ancient waterfall proves problematic to Cam; Karl's mechanical skills are put to the test.

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.

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.

Dozens of people are hospitalized after coming into contact with a toxic woman; a man becomes a musical genius after being struck by lightning; a teenager cries tears of blood.

Interviews, outtakes and never-before-seen footage provide insight into the chaos and creativity behind the making of Steven Spielberg's legendary blockbuster "Jaws.".

In Mexico's Pacific waters, Bertie Gregory goes in search of a predator, the hammerhead shark; once abundant here, hammerhead numbers have declined enough that encounters are now rare.

It's a social media feeding frenzy as comedians and experts dive into the fun of the world's most viral shark videos.