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 racial injustice in America - while his colleagues devised an unprecedented plan to bring the night to its dramatic end. Thompson’s minute-by-minute account includes intimate portrayals of the negotiator, a surgeon who operated on the fallen officers, a mother of four shot down in the street, and the SWAT officers tasked with stopping the gunman. Their stories go to the heart of the