1991. St. Ambrose School for Girls - where the exquisite Greta Stanthope reigns supreme. Rich, malicious, beautiful. Sarah Taylor is the new girl at St. Ambrose, the elite New England boarding school she has been exiled to. The girls here are glossy and sharp-tongued, not like Sarah. She's withdrawn, prickly - fragile. Greta won't let Sarah forget that she'll never be one of them. But Sarah won't go down without a fight. Yet the line between teenage rivalry and something much darker is thin. When someone ends up dead, Sarah finds herself unravelling. Just how far will she go to protect her own secrets? And is she prepared for how far the other girls will go to do the same?