Synopsis: The "must-read YA thriller" (Bustle) from #1 New York Times bestselling author of One of Us Is Lying about a small town with deadly secrets."When it comes to YA suspense, Karen M. McManus is in a league of her own..." --Entertainment WeeklyEcho Ridge is small-town America. Ellery's never been there, but she's heard all about it. Her aunt went missing there at age seventeen. And only five years ago, a homecoming queen put the town on the map when…