Its 2004. DEA agent Art Keller has been fighting the war on drugs for thirty years in a blood feud against Adán Barrera, the head of El Federación, the worlds most powerful cartel, and the man who brutally murdered Kellers partner. Finally putting Barrera away cost Keller dearlythe woman he loves, the beliefs he cherishes, the life he wants to lead. Then Barrera gets out, determined to rebuild the empire that Keller shattered. Unwilling to live in a world with Barrera in it, Keller goes on a ten-year odyssey to take him down. His obsession with justiceor is it revenge?becomes a ruthless struggle that stretches from the cities, mountains, and deserts of Mexico to Washingtons corridors of power to the streets of Berlin and Barcelona. Keller fights his personal battle against the devastated backdrop of Mexicos drug war, a conflict of unprecedented scale and viciousness, as cartels vie for power and he comes to the final reckoning with Barreraand himselfthat he always knew must happen. The Cartel is a story of revenge, honor, and sacrifice, as one man tries to face down the devil without losing his soul. It is the story of the war on drugs and the menand womenwho wage it.