Harper has tried to forget the past and fit in at expensive boarding school Brodick Academy. But she can't escape the guilt of her twin sister Izzy's death and her own part in it. But new girl Kirsty seems to understand Harper. She has lost a sister, too. Harper finally feels secure. She finally feels...loved. As if she can grow beyond the person she was when Izzy died.

Then Kirsty's behaviour becomes more erratic. Why is her life a perfect mirror of Harper's? And why is she so obsessed with Harper's dead sister?

A darkly compulsive story about love, death, and growing up under the shadow of grief.