Heroin can be life threatening, claiming the lives of numerous victims. Follow this opium derivative as it begins in a remote Afghan heroin lab that processes the raw materials and then on to Chicago, where a dealer demonstrates its final preparation for street sale. Gain insight into its insidious powers from users, and witness a police raid on a heroin distribution network in New Jersey. Plus, go inside one radical attempt to combat heroin's social costs by supplying it free to addicts.

Cannabis is the most widely used illicit drug on the planet. To many, it's an evil weed, but to some, it's a sacred herb, even a lifesaver. For decades the global supply was controlled by criminals, but now a quasi-legal industry worth billions of dollars is booming. Visit growers who are leading a horticultural revolution, hear from users consuming for medicinal purposes, go inside the "Green Rush" of medical marijuana in cities across the U.S. and the violent marijuana cartels in Mexico.