Mariana van Zeller delves into the shadowy world of clandestine plastic surgery, exposing operations performed in makeshift motel rooms and uncovering a disturbing truth about the discount surgery centers of Miami.

Mariana finds herself confronting the individuals orchestrating a devastating online romance fraud.

Four years after marijuana became legal, California's black market for cannabis has flourished, and Mariana plunges into its shadowy depths.

Mariana van Zeller delves into the world of outlaw motorcycle gangs, the so-called 1% clubs, exploring the powerful sense of camaraderie that binds these often violent organizations.

Mariana van Zeller traces the path of methamphetamine from a clandestine laboratory operated by a cartel in Sinaloa, across the border, and into the lives of those who consume it in America.

Mariana uncovers a clandestine network fueled by racism, one poised for a future of violence.

Mariana follows a clandestine path – a network for moving stolen automobiles from the United States to West Africa.

Mariana delves into the emerging world of cocaine trafficking, where a new kind of power player has risen: women in charge.

Mariana delves into the activities of those who are dismantling the Amazon rainforest.

Mariana delves into the shadowy, billion-dollar world of illicit fishing operations.