What if your school wasn't like other schools? What if obeying the rules became a way to survive? What if your friends were replaced and no one could tell? When Sophie Clearwater joins Thornberry Woods High School it doesn't take her long to realise that something isn't right. Something about the prefects' impeccable behaviour; the creepiness of the teachers and malevolence of the head… the way that children seem to lose their personalities… With new friends Lucy and Jack, it takes a great deal of courage and trust to discover the dark secrets contained deep within the school. But now that they know them, what are they going to do? Monsters, not people!