Guillermo Valdés Castellanos, former director of Mexico’s intelligence services, presents an in-depth analysis of drug trafficking, in which he relentlessly analyzes the origins and range of narcotrafficking in Mexico, the violence there in recent years, its multiple causes, and the limitless cruelty of the criminal organizations. Historia del narcotráfico en México is an enlightening, objective and honest document, written from an insider’s perspective. The history of Mexican organized crime from one of most knowledgeable people on the subject.