National Geographic (Canada)

The widow of a CIA officer killed in action chooses to take up the mantle, becoming the first woman to go undercover in Moscow and handle an important Russian source of the Cold War.

A newly-assigned director for counterterrorism spearheads the CIA's enhanced interrogation program to find those behind the attacks of September 11.

The host, Hannah, embarks on a journey to Greece and uncovers the reasons behind the factors that made it home to so many big ideas.

Hannah Fry explores Vietnam's post-war transformation; from moped chaos in Ho Chi Minh City to the muddy graft of prawn harvest in the Mekong Delta and a restorative spa bath in Sapa, Hannah reveals a nation embracing change.

Hannah Fry journeys to her ancestral homeland to discover what it means to be Irish; she traces her Irish DNA.

Hannah Fry visits Iceland to uncover the secrets behind its success; she meets scientists predicting lava flows, sees how geothermal power fuels an algae farm, explores Icelandic DNA and rides horseback through ancient Viking landscapes.

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.

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.

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.

Ken's wife visits the camp; Guillaume has trouble moving the giant sluice machine; Karl's hopes for a big payday continue to fade as the season reaches the halfway point; Big Al tries to get Big Girl working again.

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.

CBP finds $200k of weed in luggage; HSI disrupts a Colombian counterfeit ring.

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

HSI tracks shipment of 246kg of cocaine; CBP seizes illicit ammo and cash.

Homeland Security Investigations Miami uncovers a mysterious new drug; CBP discovers invasive African snails in mail.

CBP uncovers smuggled human remains; Border Patrol stops migrant smugglers.

CBP Dulles finds outbound drugs; Border Patrol tracks human smugglers.

HSI finds cocaine hidden in frozen avocado paste; CBP recovers stolen cars.

In this enhanced episode, Oliver and Troy give their homes an upgrade.

Marine agents intercept a boat carrying over 500 kilos of cocaine.

With the help of Troy and Sarah, Squibb tackles a ticking time bomb that threatens to kill all life in the Bay.

In this enhanced episode, Oliver and Troy give their homes an upgrade.

Marine agents intercept a boat carrying over 500 kilos of cocaine.