He downloads the app out of boredom. One tap. One match. That's all it takes. At Hollow's most elite university, there's an app only certain students know about, the ones who fit a very specific type. It asks if you're top or bottom before it asks anything else. Then it starts asking things no app should ever ask. Everyone who's played has disappeared. The school calls it tragedy. Accident. Suicide. Anything that keeps the powerful families writing the checks happy. Now he's gone too. His sister doesn't do grief. She does FBI. She doesn't believe in accidents, doesn't believe in closed cases, doesn't believe her brother is dead-not without a body, not without answers a school full of rich cowards refuses to give her. She's going to find who runs this game. She has no fûckin' idea what she's about to walk into. *No one has ever won this game.* *No one has ever understood the rules.* *She's about to learn both are lies.*