Listening to Sicarios presents new insights into the lives of paid assassins of Mexico’s drug trafficking syndicates from the perspectives of the assassins themselves. Based on an extraordinary series of ethnographic interviews carried out in the wake of the record levels of narcoviolence experienced in Ciudad Juárez between 2008 and 2012, this study analyzes the ways in which these young men interpret their actions across four key thematic axes: border infrastructures, youth and responsibility, masculinity and sentiment, and ethics: good vs. evil.