Sometimes girls are the meanest of them all... Female friendship is intense and that intensity can erupt into dangerous passions when teenage girls are cooped up in an exclusive East Coast boarding school. Beautiful, streetwise Cassidy Thomas; debutante jock Abby Madison; academic, sensitive Karen Mullens; and sophisticated troublemaking Zoey Spalding are four seventeen-year-olds who should be cruising happily through their Senior Year. But jealousies are simmering. And when Zoey plays a game with the class list—if you lose your virginity you get a star beside your name—it sets in motion a chain of shocking events.