An Eye For An Eye by Malorie Blackman

Set in a society split between privileged Crosses and oppressed Noughts, a grief‑stricken young man blames a girl from the ruling class for his brother’s execution and lures her into a trap to exact revenge, forcing her—pregnant with her forbidden lover’s child—to confront the deadly price of love and the corrosive spiral of hatred. Their tense showdown exposes the brutal logic of retribution and leaves scars that shape what comes next.