In Walking Ghosts, Steven Dudley, a journalist who lived in Columbia for five years, expertly chronicles the life and death of the Patriotic Union (UP), the party established by the Revolutionary Armed Forces of Colombia (FARC), Colombia's largest guerrilla group. Through stories of the politicians, drug kingpins, revolutionaries, and mercenaries who play key roles in Colombia's civil strife, Dudley maps out the complicated and murderous absurdity...