Mariana dives into the world of international scamming to understand how it all works.
Mariana investigates fentanyl, a contributor to the deadliest drug crisis in U.S. history.
Mariana meets the craftsmen who make and sell the world's finest counterfeit U.S. dollars.
Mariana attempts to understand the vanity, insecurity and greed that drives steroid use.
Mariana sets out to understand the ugly business of illicit sex in America.
Mariana retraces one of the world's most intractable smuggling routes, following cocaine's path around the world, from the Peruvian jungles to the Colombian coastline and to the streets of Miami.
Mariana van Zeller
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