The Book of the Dead — Robert Kroese

As rival powers fight for control over the land of Orszag, one man holds the power to tip the balance: Konrad the Sorcerer. To save Orszag from destruction and turn the tables on those who have used him as a pawn, Konrad must go deep under the city of Nagyvaros to find an ancient book that holds dangerous secrets. But Konrad learns that the most dangerous secret may be his own....