Gunrunners move weapons from American states with loose laws to states with stricter ones, in a neverending flow that law enforcement can't seem to stop.

Across the U.S., a powerful opioid-based cough syrup has become a dangerous pop culture sensation.

For the fishermen of Hout Bay, South Africa the post-Apartheid years have meant less opportunity as they are forced to turn to poaching to survive.

In a vicious cycle of dependency and despair, drug addicts shoplift meat and other everyday items and sell them to cash-strapped Brits struggling to get by in today's UK.

In New York City, an illegal gambling underworld flourishes, but sometimes the largest losers are the ones running the games.

An international-car-theft operation based out of Newark, N.J., is spotlighted in the series premiere.

Young street genius entrepreneurs have evolved from selling drugs to stealing identities and printing credit cards.

Designer clothes are on sale for unbelievably low prices because the only cost is the risk of getting caught boosting.

That hit song or sold out show may not be what it seems. Digital trappers are manipulating streaming platforms to turn nobodies into somebodies.

The wave of cannabis legalizations has deepened divides and complicated the marijuana industry; corporate weed is thriving, but the black market for cannabis still looms large.

Black market beauty enhancement has become a game of Russian roulette for people looking to get big. But in the trans community, the black market might be a life saver.

Drinking water is so poorly managed that our most basic resource has emerged as a terrifying black market. The stakes are critical, yet for most of us, it's barely on our radar.