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An inside look into "Trafficked" and the world's shadow economy.
Mariana reveals the most intense and unexpected moments from Trafficked.
Mariana investigates underground fight clubs and the push to bring bare-knuckle fighting into the mainstream.
Mariana embeds with a crew of cryptocurrency scammers who show her how they make millions of dollars in mere weeks.
Violent crime is soaring in Los Angeles to levels not seen in 30 years. Mariana goes inside the Crips and the Bloods to understand why.
Mariana is on a mission to understand how personal and financial data is stolen and sold by a shadowy network of hackers and thieves.
Mariana investigates the global surrogacy market to understand how the dream of starting a family is fueling a babies-for-cash black market.
Mariana investigates how the demand for MDMA here in the U.S. is threatening to turn the Netherlands into a narco state.
Mariana embarks on a journey from Africa to the Middle East to uncover how black-market oil is fueling terrorist groups around the world.
Mariana is on a mission to expose how ghost guns — untraceable firearms built from kits bought online — are fueling violence across the country.
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.
Mariana Van Zeller investigates one of the darkest and most elusive black markets in the world--the illicit trade in human organs.
Mariana van Zeller investigates the world's most dangerous black markets, from bride smuggling to militias and illegal street racing.
Award-winning journalist Mariana van Zeller investigates new emerging underworlds, including the trade in body parts, hired assassins, sextortion and the smuggling of people across the U.S.-Mexico border, to meet the players and learn the business.