Season 4
Returning for a fourth season, National Geographic Channel's series Drugs Inc. opens viewers eyes with a 360° approach to the drug trade. With intimate firsthand, street-level testimonies from those at the front lines and back alleys of the drug trade — traffickers, dealers, users, federal agents and cops — the investigative series examines the $350 billion-a-year industry from all angles.
Episodes
1 San Francisco Meth Zombies Aug 11, 2013 
2 Jamaican Gangs, Guns and Ganja Aug 18, 2013 
3 Windy City High Aug 25, 2013 
4 High in Houston Sep 1, 2013 
5 Rocky Mountain High Sep 15, 2013 
6 Miami Vices Sep 22, 2013 
7 Philly Dope Sep 29, 2013 
8 Wasted in Seattle Oct 6, 2013 
9 Cartel City, Arizona Oct 13, 2013 
10 Stashville, Tennessee Oct 20, 2013 
11 The Drug Makers Nov 24, 2013 
12 Going to Extremes Nov 24, 2013 
13 Best in the Business Nov 24, 2013