The Southwestern desert--that tumultuous "zone claimed by two nations, and controlled by no one"--is Charles Bowden's home and enduring passion. In acclaimed books ranging from A Shadow in the City: Confessions of an Undercover Drug Warrior and Down by the River: Drugs, Money, Murder, and Family to Inferno and Exodus/?xodo, Bowden has written eloquently about issues that plague the border region--the smuggling of drugs and people and the violence...