
Mariana van Zeller explores the complex inner workings of the global underworld, black and informal markets.
Mariana investigates underground fight clubs and the push to bring bare-knuckle fighting into the mainstream.
Mariana embeds with a crew of crypto scammers who show her how they make millions of dollars in mere weeks.
Violent crime soars in Los Angeles to levels not seen in 30 years; Mariana journeys into gangland to understand the violence plaguing the city.
Mariana goes on a mission to understand how personal and financial data is stolen and sold by a shadowy network of hackers and thieves.