The Rise of Lord Sinon, Book 2 in the Chronicles of Gil-Lael

Cadmar is haunted by an elfin prophecy when Lord Sinon arrives to become tutor to the king's youngest son. As Sinon's power increases, so does misfortune. Chaos, murder, and mortal illness come about to king and crown prince. Then Sinon sets his sights on Princess Aimée and Cadmar must act swiftly to steal her away to the elfin kingdom for protection. Once there, it becomes clear what he must do to save those he loves.