In this enhanced episode, an army veteran helps flood Harlem with heroin.

Drug lord Khun Sa floods New York, N.Y., with purity heroin until the DEA hatches a plan.

The mob connects with the Mujahideen to create an ambitious heroin pipeline.

DEA agent Jeff Higgins sets out to avenge 9/11 by taking on an Afghan heroin kingpin and proving the close link between narcotics and terrorism.

Party bro and convicted felon Chris George floods the U.S. with addictive pain medication, until the FBI hatch a plan.

How rogue chemists and street gangs brought fentanyl to America - and the vicious Mexican cartel that controls this deadly opioid today - the CJNG