J.B., Ramon, and Trey are forced to follow the prestigious "program's" strict rules. Extreme discipline, they've been told, is what it takes to be college bound, to avoid the fates of many men in their neighborhoods. This, the Principal Moore Method, supposedly saves lives. But when Moore ends up murdered and the cops come sniffing around, the trio emerges as the case's prime suspects. With all three maintaining their innocence, they must band together to track down the real killer before they are arrested. But is the true culprit hiding among them? This gripping thriller shines a glaring light on how the system too often condemns Black and Latinx teen boys to failure before they've even had a chance at success. 'Thrilling ... Promise Boys will stay with you long after the last page' - Karen M. McManus, author of One of Us Is Lying.