A 360-degree view of the trafficking world from the point-of-view of the traffickers, law enforcement agents and those caught in the crossfire with access only National Geographic can provide.
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Mariana investigates the growing popularity of bare-knuckle fighting.
Mariana embeds with crypto scammers who show her how they make millions.
Mariana journeys into gangland to understand the violence plaguing LA.
Mariana investigates the lucrative black market for private data.
Mariana explores surrogacy's dark side; a babies-for-cash black market.
An alarming message from her son's middle school about MDMA sparks van Zeller into high gear. She traces the supply chain of "the love drug" within the Los Angeles clubs back to its booming epicenter in the Netherlands, where a mob-infested underworld has recently murdered a well-known journalist.
Mariana investigates how illicit oil is fueling terrorist groups worldwide.
Mariana exposes the dangers of the growing and deadly ghost guns industry.
Mariana goes in search of the elusive chemists who make the world's LSD.
A look at the complex inner-workings of the global underworld, black and informal markets.
A 360-degree view of the trafficking world from the point-of-view of the traffickers, law enforcement agents and those caught in the crossfire with access only National Geographic can provide.
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