Byzantium's crown

the long version

Byzantium lies at the intersection of East and West, in the heart of the most opulent empire the world has ever known. Warrior Prince Marric has to fight for his right to defend his position as heir of the kingship. Last in the powerful line of kings descended from Alexander the Great, he is ordained by the gods of the people to rule alongside his beloved and wise sister, Alexa. But a sorcerer of dark magic has usurped the throne and Marric is exiled. To win back his rule, he must learn the arts of magic in order to defeat the dark sorcerer. In the land of Egypt, amidst the slave markets and the luxurious perfumed villas of the wealthy, he encounters a silver-haired slave girl who can teach him the arts of magic. For Marric knows that he cannot vanquish his enemy with sword and strength alone.