Everyone that meets Kat Keating is mesmerised. Beautiful, smart and charming, she is everything a good girl should be. Her sister Eleanor, on the other hand, knows she can't compete with Kat. On the awkward side of tall, clever enough to be bullied, and full of the responsibilities only an older sibling can understand, Eleanor grows up knowing she's not a good girl. This is the story of the Keating sisters - through a childhood fraught with secrets, adolescent rivalries, and on into adulthood with all its complexities and misunderstandings. Until a terrible truth brings the sisters crashing together and finally Eleanor begins to uncover just how good Kat really was.