The international bestseller tells the story of five students who go to detention, but only four leave alive. Yale aspirant Bronwyn has never publicly broken a rule. Sports star Cooper only excels on the baseball field. Villain Nate is on the verge of a future in crime. Prom queen Addy desperately tries to maintain the appearance of her perfect life. And outsider Simon, the creator of the infamous Bayview High gossip app, will be unable to tell anyone about them. He dies 24 hours before he could share their deepest secrets online. Investigators conclude it wasn't an accident. They are all suspects. Everyone has secrets, right? The question remains how far you're willing to go to protect them.