The eyes of a king

YA. Fantasy fiction. Five-year-old Cassius escaped the brutal assassination of his parents, the king and queen of Malonia, and was exiled to modern day England. Now fifteen, Cassius continues to be hidden in England under the protection of his tutor, the great Alderbaran, who's ancient prophecy says that Cassius will, one day, return and claim his rightful place on the throne.