The Empty Kingdom

Telemakos, descendent of British and Aksumite royalty, has been accused of treason by Abreha, ruler of Himyar, and imprisoned on the upper levels of his twelve-story palace. Not only is Telemakos forbidden to see his beloved younger sister, Athena, but he is also forced to reproduce Aksumite maps in order to help Abreha plan an invasion. Lacking any way to communicate with his family in faraway Aksum, Telemakos must use all of his subtle talents to regain his freedom.