The Noughts & Crosses sequence Tome 1
Noughts & Crosses

Sephy Hadley and Callum McGregor have been friends since childhood, and they both know that's as far as it can go. Theirs is a world full of racism, fear and mounting violence - where Noughts and Crosses are fated to be enemies. Then, against all the odds, these star-crossed lovers choose each other. But this is a love story that will lead them both into terrible danger...