Award-winning journalist Mariana van Zeller explores the inner workings of the global underworld's most dangerous black...
Mariana investigates the global surrogacy market to understand how the dream of starting a family is fueling a babies-for-cash...
Mariana investigates underground fight clubs and the push to bring bare-knuckle fighting into the mainstream.
Mariana van Zeller investigates one of the darkest and most elusive black markets in the world- the illicit trade in human organs.
Mariana is on a mission to expose how ghost guns untraceable firearms built from kits bought online are fueling violence...
Mariana embarks on a journey from Africa to the Middle East to uncover how black-market oil is fueling terrorist groups around...
As much as 30% of our seafood has been caught illegally. Mariana searches for the fish pirates who make billions each year...
Mariana van Zeller goes inside the secretive world of outlaw motorcycle gangs, also known as 1% clubs, when her interest is...
Mariana travels to the Amazon to track down the criminal networks behind a slew of killings and the illegal destruction of the...
Mariana follows a smuggling route of cars stolen from the U.S. to shipping containers bound for West Africa, where the demand...
In 2020 alone, romance scammers exploited Americans out of more than $600M. Mariana’s investigation takes her to Ghana,...
Mariana goes in search of the new bosses, new routes, new risks and the American communities paying the price for fentanyl's...