Drugs, Inc. - 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.

• S4 E1 - San Francisco Meth Zombies

• S4 E2 - Jamaican Gangs, Guns and Ganja

• S4 E3 - Windy City High

• S4 E4 - High in Houston

• S4 E5 - Rocky Mountain High

• S4 E6 - Miami Vices

• S4 E7 - Philly Dope

• S4 E8 - Wasted in Seattle

• S4 E9 - Cartel City, Arizona

• S4 E10 - Stashville, Tennessee

• S4 E11 - The Drug Makers

• S4 E12 - Going to Extremes

• S4 E13 - Best in the Business