From the New York Times bestselling authors of All the Bright Places and Every Day comes a story of hope, siblinghood, and finding your home in the people who matter the most.Subject: You. Missing. Ezra Ahern wakes up one day to find his older sister, Bea, gone. No note, no sign, nothing but an email address hidden somewhere only he would find it. Ezra never expected to be left behind with their abusive stepfather and their neglectful mother?how is he supposed to navigate life without Bea? Bea Ahern already knew she needed to get as far away from home as possible But a message in her inbox changes everything, and she finds herself alone in a new city?without Ez, without a real plan?chasing someone who might not even want to be found.As things unravel at home for Ezra, Bea will confront secrets about their past that will forever change the way they think about their family. Together and apart, broken by abuse but connected by love, this brother and sister must learn to trust themselves before they can find a way back to each other.