Going to Extremes (S04E12)

The sale of drugs accounts for billions of dollars in illegal commerce across the globe, bringing untold wealth to a select few. But these men and women who live lavish lifestyles off the sale of drugs rarely associate themselves with the ugly underbelly where their products hit the streets ' with users. These stories show that wherever people use ' be it an island paradise or a cold city street ' they can get lost in the shuffle. This episode will go deep into the stories of the users. (National Geographic)