Tamsyn Webb has had to grow up fast. The dead walk, and they hunt the living. One of the few safe places left in England is Gravesend, a small village turned into a fortress. Trapped with hundreds of starving, scared survivors, it's getting harder to tell who the monsters are - the ones beyond the walls, or those huddled behind them. When Tamsyn learns of a possible cure for the zombie virus, there's only one option. She'll...