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Mariana van Zeller investigates the world's most dangerous black markets, from bride smuggling to militias and illegal street racing.
Mariana investigates the illegal trade in shark fins, going face-to-face with hunters and smugglers and undercover to explore the demand in the U.S.
Mariana goes inside the adrenaline-fueled, gambling-funded subculture of illegal street racing that's wreaking havoc on cities around the globe.
Mariana investigates a wave of anti-LGBTQ+ violence and uncovers a well-funded global network pushing an anti-gay agenda around the world.
Mariana investigates the scammers luring addicts into fraudulent sober homes, while billing health programs for billions in bogus treatments.
Mariana investigates America's heavily armed militias and their growing influence.
Mariana investigates the global phenomenon of armored car heists, responsible for some of the most brazen and dangerous robberies in the world.
Mariana travels to Vietnam to investigate reports that young women are being trafficked into China to be sold as unwilling brides.
The sale of human remains generates billions of dollars worldwide each year, but remains largely hidden from public view and abuse abounds. Anyone can become a victim of the remains trade.
Mariana van Zeller investigates sextortion, a blackmail scam using compromising photos to extort victims. She heads to the Philippines to find the scammer who shamed an American victim into suicide.
Mariana investigates the growing influence of Mexican cartels in America, exposing an extensive network that's fueling violence and addiction.
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.
