Just before dawn in the hills near the Scottish border, a man murders a young woman. At the same time, a hot-air balloon crashes out of the sky. Theres just one survivor. Shes seen the killers face but hes also seen hers. And he wont rest until hes eliminated the only witness to his crime. Alone, scared, trusting no one, shes running to where she feels safe but it could be the most dangerous place of all . . .