National Geographic HD

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

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

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 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 goes inside the world of contract killers.

Ibiza's hippie roots gave way to a booming, chaotic underworld.

British rave culture fuels Ibiza's rise into a darker, high-stakes drug haven.

Ibiza's party boom fuels cocaine turf wars and a violent criminal takeover.

Heroin arrives in the 1980s Liverpool, causing a dealer's rise and an epidemic.

Liverpool's ecstasy boom sparked a cultural shift and a new breed of dealer.

In the 1990s, a cocaine boom in Liverpool sparked deadly violence.

When three visitors from Malaysia raise alarms as they cancel their accommodation just before their flight, their lies begin to unravel.

A Chinese bulk carrier's security breach leads to a discovery.

A honeymooning couple's odd travel plans spark an intense investigation.

Officers find something on a Bulgarian visitor's phone that may end his holiday early; two fruit pickers from Tonga fail to declare prohibited items.

A man's unusual jewelry raises alarms; snacks hide a dark secret.

A drug dog alerts to a man's bag; an X-ray reveals a shocking find.

A man's luggage tests positive for drugs and a dog makes a huge find.

Two men come to the attention of the Border Force when they are caught attempting to avoid inspection of their suitcases; a couple from China do not want to pay the fine for all their prohibited food items.

A backpack sent by mail catches the attention of officers when none of the declared items appear to be anything like they should; closer inspection reveals a large haul of narcotics.

A martial artist says he purchased a bottle of cologne at a market in Thailand, but Border Force believes there is more to his story; a couple from Bhutan has a prohibited item in their suitcase.

A passenger returning from China has two extra passports in his bag, raising questions from inspecting officers; a container from Lebanon of household goods, furniture and food is hiding hundreds of illicit items.

A passenger's suitcase with an unusual lining sets alarm bells ringing for the Border Force, prompting officers to dig a little deeper to find out exactly what the man is trying to hide.

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In this enhanced episode, the life of drug kingpin El Chapo Guzmán.

La Cosa Nostra is ruling the streets of New York, but U.S. Attorney for the Southern District of New York, Rudolph Giuliani, is determined to bring an end to the violence and corruption.

In 1980, one of the most successful mob families in America is in Philadelphia, but when old school don Angelo Bruno is assassinated, a bloody new era begins.

It is 1978, and American law enforcement is at war with the American mob; the FBI has a secret weapon in agent Joe Pistone, AKA Donnie Brasco, who has infiltrated the Bonanno family.

The five families of the American mafia ruled the streets of New York, but a new generation of FBI agents changed the game.

Agriculture imports are scrutinized for pests, and HSI finds narcotics inside fake foods.

HSI investigates a ring of airline employees smuggling drugs through JFK Airport, and CBP suspects a passenger is smuggling drugs in her shoes.

CBP finds drugs hidden in cans, and HSI stops a date rape drug from hitting the streets.

HSI conducts a controlled delivery of MDMA; CBP questions a possible drug smuggler.

U.S. Customs and Border Protection agents suspect a man of smuggling internally; HSI delivers ecstasy in hopes of an arrest.

CBP finds drugs concealed in clever ways; HSI pursues traffickers in a daring sting.

CBP searches a suspicious suitcase; HSI intercepts drug-filled pistons.

In this enhanced episode, CBP seizes silver bars, cocaine and a gun in Florida.

CBP finds drugs hidden in cans, and HSI stops a date rape drug from hitting the streets.

HSI Miami catches a load of cocaine-filled fish; CBP San Diego fights human smuggling.

In this enhanced episode, CBP seizes silver bars, cocaine and a gun in Florida.

A passenger behaves erratically, and a woman breaks out in tears; a man admits necessity led him to commit a crime; a suspicious bag might contain drugs.

A young man seems unaware he's committed a crime, despite being caught carrying 30 times the legal amount of marijuana. At the docks, a shipment of hats raises suspicions.

A man tricks his girlfriend into smuggling drugs, turning their romantic vacations into a nightmare; a passenger hides drugs in food containers.

A 19-year-old's bag is filled with damp clothes that turn out to be soaked in liquid cocaine; police find 16kg worth of drugs in a suitcase; officers detain a pair of Colombians headed to Mexico.

A woman is arrested with her two children while trying to smuggle drugs abroad; a young woman breaks out in tears; a young man is thoroughly searched.

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The Steel City is awash with heroin, and a deadly batch has hit the streets; enhanced.

Australia's outlaw bikers battle local police and Chinese Triads to keep control of the highly lucrative crystal meth trade; enhanced.

The players, dealers and doctors behind the drug trade in Los Angeles; enhanced.

Drug dealers use extreme violence on the streets of Oakland, Calif., while elite undercover detectives aim to bring them down.

Molly is laced with methamphetamine or made with dangerous synthetics; the party drug has become a menace in Atlanta, where police officers are fighting back; enhanced.

An exploration of molly, the bliss-inducing rave drug shrouded in confusion and fraud; enhanced.

Phoenix is under the control of one of Mexico's most powerful and ruthless drug organizations, the Sinaloa Cartel; enhanced.

Heroin addiction reaches epidemic proportions on suburban Staten Island, N.Y.; enhanced.

HSI busts an illegal gun operation in NYC, while CBP confronts a meth surge from Mexico.

HSI snags a truck loaded with meth.

CBP hunts for drugs in a jungle and finds meth in a car bumper.

Officers confront human smuggling at the border and nab a car loaded with fentanyl.

CBP finds coke on cargo ships in Miami; HSI pursues a drug-loaded SUV in Texas.

AMO Puerto Rico sinks a marine smuggling op; HSI San Diego seals up a drug tunnel.

HSI finds cocaine-filled tire rims in cargo and nabs a car loaded with meth and fentanyl.

Heroin addiction reaches epidemic proportions on suburban Staten Island, N.Y.; enhanced.