In Airport Security Colombia and Peru, suspects try to evade detection. A couple traveling to Punta Cana are not what they seem.

Homeland Security Investigations, Orange County performs 3 undercover drug stings with multiple arrests. Customs and Border Protection finds cocaine hidden under a vehicles backseat in Rio Grande Valley.

CBPs K9 sniffs out stacks of hidden cash in Atlanta. HSI air surveillance tracks a multi-level drug deal in San Diego, seizing $2 million of dope.

In 2009, Ciudad Juárez, Mexico, was called murder capital. Phoenix, USA, was experiencing a rise in kidnappings. More than ten years later, we return to these cities to explore how the smuggling of guns, drugs, money and people connect the U.S. and Mexico in ways that go beyond their shared border.

The battle for oil in Alaska's Arctic Refuge has waged for decades. We explore the history of oil in the region and the impacts of climate change.

The war on pot is not over. Penalties and jailtime are still a threat, and cannabis entrepreneurs struggle to adapt.

In this episode we learn the science behind the fails, when riding a horse through water, steering a radio-controlled plane and underestimating the power of ocean tides.

In this episode we learn the science behind the fails, when driving through snow and cycling around velodromes, and the terrifying effect of a malfunctioning powerline.

In this episode we learn the science behind attempting to flambé dinner, riding a balance bike, and confronting a dust devil.

In this episode we learn the science behind attempting a snowmobile ridge jump, cycling over a pump track, and lighting fires.

We learn the science behind launching off snow ramps on inflatable tubes, driving through water on ATVs, and when animals tackle staircases.

This Texas smokehouse puts the magic in one of Arby's sandwiches, and every two-ounce shot of this energy drink delivers a Texas-size wallop.

This horseradish from Baltimore could bring tears to your eyes, and a national security incident landed these cupcakes in the spotlight.

Meet the fresh-baked burger bun you can customise to perfection, and discover the chip-shaped popcorn that's become a popular snack in the sky.

Behind the scenes of one of the biggest and soon to be busiest airports in the world.

Behind the scenes of one of the biggest and soon to be busiest airports in the world.

The story of Hitler's vision to conquer the world using his high-tech battleships. Drain the Oceans reveals the rise and fall of the Third Reich's deadly fleet.

Explore a world never seen before - a world hidden under miles of water, the landscape of the ocean bed.

Before Stonehenge was built, the same area was inhabited by a mysterious people. Albert Lin goes on an adventure across England and Scandinavia.

Prehistoric women were not just confined to the cave. Modern technology points to women holding a much bigger role in ancient society.

Was the lost city of "Atlantis" a real place? And if it was, can its ruins be found today? "Atlantis Rising" is an investigative, high end special into the world of ancient history and archaeology.

Three scientific teams test possible locations of the legendary lost city - with remarkable results.

Archaeologists hunt for clues to shed light on life and death in Ancient Egypt's lost megacity - Alexandria.

Air Crash Investigation 4 investigates legendary aviation disasters to find out what went wrong and why.

A DC-8 with three working engines is being ferried to a maintenance facility for repairs. The crew attempts a three-engine take-off, but crashes.

Dangerous situations turn deadly when pilots ignore their training. Basketball legend Kobe Bryant is among the casualties in this crash.

For the first time ever, see the full magnificent hoard of Saxon treasure unearthed in Staffordshire in 2009. What does it reveal about our past?

We look at the Vikings' beginnings in Scandinavia, before the attack on Lindisfarne in AD 793 which heralded the Viking Age of conquest.

The Siege of York occurred from 866 when the Great Heathen Army laid claim to the Northumbrian capital of York. We look at the major battles, players and strongholds in 9th Century England.

The Vikings known in the East as "the Rus" attacked Constantinople in 860. The Rus became a permanent and feared fixture in the Byzantine Empire.

Archaeologists hunt for clues to shed light on life and death in Ancient Egypt's lost megacity - Alexandria.

Excavating unopened chambers, and scanning the cliffside by drone, the experts attempt to write a new page in the history books.

Archaeologists investigate how robbers looted the pyramids and tombs of ancient Egypt, and what clues they left behind.

Excavating unopened chambers, and scanning the cliffside by drone, the experts attempt to write a new page in the history books.

For the first time ever, see the full magnificent hoard of Saxon treasure unearthed in Staffordshire in 2009. What does it reveal about our past?

Explore a world never seen before - a world hidden under miles of water, the landscape of the ocean bed.

The story of Hitler's vision to conquer the world using his high-tech battleships. Drain the Oceans reveals the rise and fall of the Third Reich's deadly fleet.