On the evening of July 7, 2016, protesters gathered in cities across the nation after police shot two black men, Philando Castile and Alton Sterling. As officers patrolled a march in Dallas, a young man stepped out of an SUV wearing a bulletproof vest and carrying a high-powered rifle. He killed five officers and wounded eleven others. It fell to a small group of cops to corner the shooter inside a community college, where a fierce gun battle was followed by a stalemate. Crisis negotiator Larry Gordon, a 21-year department veteran, spent hours bonding with the gunman—over childhood ghosts and death and shared experiences of racial injustice in America—while his colleagues devised an unprecedented plan to bring the night to its dramatic end.