A frightened girl running barefoot on a knife edge ...that's how eighteen-year-old Sephy feels as she gazes down at her new-born daughter, Callie Rose. Whilst Sephy is a Cross, the baby's father, Callum, was a nought, giving Callie Rose dual heritage in a society where the ruling Crosses treat the pale-skinned noughts - blankers - as second-class citizens. What kind of world will her daughter grow up into? One which is more equal? Or one where discrimination still has the power to destroy lives? Sephy can only hope that the tomorrows will be better than the yesterdays. But fifteen years later, Callie Rose's actions are to plunge both of them into the heart of danger, forcing Sephy - once again - to take sides ...Sequel to the award-winning Noughts & Crosses, Knife Edge is a razor-sharp and intensely moving novel for older readers. Set against an epic background of conflict, confrontation and courage, it is impossible to put down - and impossible to forget.