Francesca Zappia

"Two roads lead into a dark forest. They meet at Greymist Fair, the village hidden in the trees, a place kept alive by the families that never leave. The people of Greymist Fair know the woods are a dangerous and magical place, and to set foot off the road is to invite trouble. When Heike, the village's young tailor, discovers a body on the road, she goes looking for who is responsible. But her quest only leads to more strange happenings around Greymist...

In chapters that alternate between the past and the present, Cat slowly recalls her life before she and her classmates were trapped inside School, where half of them are mutating, everyone is fearful, and self-destruction seems to be the only means of escape.