The cartel
Don Winslow (Author)
DEA agent Art Keller has been fighting the war on drugs for thirty years in a blood feud against Adan Barrera, the head of El Federacion, the world's most powerful cartel, and the man who brutally murdered Keller's partner. Finally putting Barrera away costs Keller dearly - the woman he loves, the beliefs he cherishes, the life he wants to lead.