Mariana journeys deep inside the Peruvian underworld to meet the gangster craftsmen who make and sell the world’s finest counterfeit U.S. dollars.
Mariana dives into the world of international scamming to understand how it all works and meet the outlaws at the heart of this booming industry.
Mariana retraces one of the world’s most intractable smuggling routes, following cocaine’s path around the world.
Mariana uncovers a supply chain of American firearms being smuggled into the hands of drug cartels, fueling record levels of gun violence in Mexico.
Mariana attempts to understand the vanity, insecurity and greed that’s driving the unregulated, billion-dollar black market in body-enhancing drugs.
Mariana goes in search of the new bosses, new routes, new risks and the American communities paying the price for fentanyl’s next wave.
Mariana tackles the black market for tigers and tiger parts, so secretive and dangerous that few have attempted to uncover its ugly details.
Mariana embeds with pimps, victims, undercover cops and private investigators to understand the ugly business of illicit sex in America.
Mariana van Zeller follows a meth superhighway from a cartel-run lab in Sinaloa across the border and into the lives of American users.
Mariana van Zeller investigates underground plastic surgery, from motel-room operations to a deadly revelation about Miami’s discount surgery centers.
Mariana follows a smuggling route of cars stolen from the U.S. to shipping containers bound for West Africa, where the demand is skyrocketing.
Mariana sets off on a wild journey through California’s black market for weed, which has mushroomed since marijuana legalization four years ago.
Mariana van Zeller investigates outlaw motorcycle gangs known as 1% clubs, learning about the bonds of brotherhood that fuel these violent groups.
Mariana investigates a new breed of narco starting to gain power in cocaine trafficking networks of Colombia and Brazil: las jefas, lady bosses.
Mariana journeys from America’s heartland to the cafes of Ghana to meet the romance scammers fleecing Americans out of millions.
Mariana travels to the Amazon to track down the criminal networks behind a slew of killings and the illegal destruction of the rainforest.
As much as 30% of our seafood has been caught illegally. Mariana searches for the fish pirates who make billions each year while destroying our oceans.
An alarming message from her son's middle school about MDMA sparks van Zeller into high gear. She traces the supply chain of "the love drug" within the Los Angeles clubs back to its booming epicenter in the Netherlands, where a mob-infested underworld has recently murdered a well-known journalist.
Mariana investigates how illicit oil is fueling terrorist groups worldwide.
