Episodes

• Black Market Organs

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  Mariana van Zeller investigates one of the darkest and most elusive black markets in the world- the illicit trade in human organs.

  Next Showing

  Thursday 9 February at 21:00 CAT

  On National Geographic

  Next Showing

  Friday 10 February at 02:15 CAT

  On National Geographic

• LSD

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  LSD is booming because of the growing faith in its healing power. Mariana hunts for the elusive chemists responsible for making the world's supply.

  Next Showing

  Thursday 16 February at 21:00 CAT

  On National Geographic

  Next Showing

  Friday 17 February at 02:15 CAT

  On National Geographic

• Ghost Guns

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  Mariana is on a mission to expose how ghost guns untraceable firearms built from kits bought online are fueling violence across the country.

  Next Showing

  Thursday 23 February at 21:00 CAT

  On National Geographic

  Next Showing

  Friday 24 February at 02:15 CAT

  On National Geographic

• Cyber Pirates

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  Mariana is on a mission to understand how personal and financial data is stolen and sold by a shadowy network of hackers and thieves.

• MDMA

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  Mariana investigates how the demand for MDMA here in the U.S. is threatening to turn the Netherlands into a narco state.

• Gangs

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  Violent crime is soaring in Los Angeles to levels not seen in 30 years. To try and understand the realities and the rivalries fueling this gruesome trend, Mariana finds her way inside two of America's most notorious street gangs — the Bloods and the Crips. Surprisingly, her journey will lead her from some of the roughest neighborhoods of LA to the tiny Central American country of Belize.

• Terrorist Oil

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  Mariana embarks on a journey from Africa to the Middle East to uncover how black-market oil is fueling terrorist groups around the world.

• Crypto Scams

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  Cryptocurrencies have gone mainstream and minted billionaires around the globe, but this get-rich-quick fever paired with a lack of government oversight and regulation has created the perfect opportunity for scammers. In this episode, Mariana embeds with a crew of crypto "rug pull" scammers, who show her how they make millions of dollars in mere weeks.

• Black Market Marijuana

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  Mariana sets off on a wild journey through California’s black market for weed, which has mushroomed since marijuana legalization four years ago.

• Outlaw Motorcycle Gangs

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  Mariana van Zeller investigates outlaw motorcycle gangs known as 1% clubs, learning about the bonds of brotherhood that fuel these violent groups.

• Black Market Surgery

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  Mariana van Zeller investigates underground plastic surgery, from motel-room operations to a deadly revelation about Miami’s discount surgery centers.

• Meth

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  Mariana van Zeller follows a meth superhighway from a cartel-run lab in Sinaloa across the border and into the lives of American users.

• Stolen Cars

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  Mariana follows a smuggling route of cars stolen from the U.S. to shipping containers bound for West Africa, where the demand is skyrocketing.

• Romance Scams

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  Mariana journeys from America’s heartland to the cafes of Ghana to meet the romance scammers fleecing Americans out of millions.

• Cocaine Queens

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  Mariana investigates a new breed of narco starting to gain power in cocaine trafficking networks of Colombia and Brazil: las jefas, lady bosses.

• Amazon Mafia

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  Mariana travels to the Amazon to track down the criminal networks behind a slew of killings and the illegal destruction of the rainforest.

• Fish Pirates

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  As much as 30% of our seafood has been caught illegally. Mariana searches for the fish pirates who make billions each year while destroying our oceans.

• Counterfeiting

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  Mariana van Zeller journeys deep inside the Peruvian underworld to meet the gangster craftsmen who make the world's finest counterfeit money.

  Next Showing

  Thursday 2 February at 21:00 CAT

  On National Geographic

  Next Showing

  Friday 3 February at 02:15 CAT

  On National Geographic

• Scam

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  Mariana dives into the world of international scamming to meet the outlaws and understand the scams at the heart of this booming industry. Her investigation takes her from the violent streets of Montego Bay to the glitzy neighborhoods of Tel Aviv as she pursues some of the biggest scammers in the world.

• Cocaine

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  Mariana van Zeller uncovers a notorious cocaine smuggling route from the Peruvian jungles, to the Colombian coastline, and to the streets of Miami.

• Guns

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  Mariana uncovers a supply chain of American guns being smuggled into the hands of Mexican drug cartels and fueling record levels of violence.

• Steroids

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  Mariana van Zeller investigates a new wave of underground steroids promising to make users superhuman.

• Fentanyl

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  Mariana goes in search of the new bosses, new routes, new risks and the American communities paying the price for fentanyl's next wave.

• Tigers

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  Award-winning journalist Mariana van Zeller explores the inner-workings of the global underworld's most dangerous black markets. In each episode, she journeys inside a different black market - from drugs to guns to tiger parts - to meet the players, learn the business, and unearth the geo-political circumstances and context that create the world's multi-trillion dollar shadow economy.

• Pimps

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  Mariana embeds with pimps, victims, undercover cops and private investigators to understand the ugly business of illicit sex in America.

• Mariana Van Zeller Investigates

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  Go behind the scenes with Mariana Van Zeller, as she reveals all the gritty details of reporting on the criminal underworld. A dangerous job that requires courage, determination, and heart.