Reign of Serpents by Eleanor Herman

REIGN OF SERPENTS is the third installment of Eleanor Herman's series, Blood of Gods and Royals. This epic young adult series combines historical fiction with myth, magic, and intrigue. The stories center around a young Alexander the Great and a mysterious prophecy, each book building into grand adventures and individual quests. Joining him are a cast of friends ( Katerina, Jacob, Hephaestion, Zofia, and Cynane ) as they battle both men and monsters, in order to save the ancient world from a dangerous enemy, know as the Spirit Eaters.