An exploration of the intricate mechanisms driving the world's shadow economies: the clandestine networks of illicit trade and informal exchange.

Mariana embarks on a quest to find the shadowy chemists responsible for producing the world's most potent LSD.

Mariana illuminates the perils posed by the burgeoning industry of privately manufactured firearms, often referred to as ghost guns.

Mariana delves into the complex ways in which the black market for oil sustains terrorist organizations across the globe.

A disturbing alert from her son’s middle school regarding MDMA sends van Zeller into immediate action. She follows the drug's distribution network, originating in Los Angeles nightclubs, back to its burgeoning source in the Netherlands. The…

Mariana delves into the shadowed underbelly of surrogacy, exposing a clandestine world where children are bought and sold.

Mariana delves into the shadowy world of illicit private data.

Mariana ventures into the heart of Los Angeles's criminal underworld, seeking to comprehend the pervasive violence that grips the city.

Mariana immersed herself within the world of cryptocurrency fraud, gaining firsthand insight into the methods employed by those who amass fortunes through deception.

Mariana delves into the rising tide of interest in bare-knuckle combat.