"El Narco" draws the first definitive portrait of Mexico's drug cartels and how they have radically transformed in the last decade. This piercing book joins testimonies from inside the cartels with firsthand dispatches and unsparing analysis. The devastation may be south of the Rio Grande, but America is knee-deep in this conflict.

"Essential reading."-Steve Coll, NewYorker.com

A gripping, sobering account of how Mexican drug gangs have transformed into a criminal insurgency that threatens the nation's democracy and reaches across to the United States.

The world has watched, stunned, the bloodshed in Mexico. Forty thousand murdered since 2006; police chiefs shot within hours of taking office; mass graves comparable to those of civil wars; car bombs shattering storefronts; headless corpses heaped in town squares. And it is all because a few Americans are getting high. Or is it part of a worldwide shadow economy that threatens Mexico's democracy? The United States throws Black Hawk helicopters, DEA assistance, and lots of money at the problem. But in secret, Washington is at a loss. Who are these mysterious figures who threaten Mexico's democracy? What is El Narco?

El Narco is not a gang; it is a movement and an industry drawing in hundreds of thousands, from bullet-riddled barrios to marijuana-covered mountains. The conflict spawned by El Narco has given rise to paramilitary death squads battling from Guatemala to the Texas border (and sometimes beyond).

In this "propulsive ... high-octane" book (Publishers Weekly), Ioan Grillo draws the first definitive portrait of Mexico's cartels and how they have radically transformed.