The Raven's Shadow — James E. Wisher

Death gathers in the shadow of the floating island. Conryu returns home after an eventful first year at school, eager for a quiet summer vacation with his best friends. Unfortunately, it is not to be. Just days after he arrives home, the Le Fay Society broadcasts its demands and his life is at the top of the list. Conryu soon finds himself on the run from the police and the only way to save himself is to hunt down those threatening the city himself. Can Conryu and his friends defeat the cunning Lady Raven before she unleashes a horde of shadow beasts on the city?