Lost Magic - The Natural Order School of Magic, #3

A new school. An impossible mission. Tristan and Amber have been singled out as the best magicians at the Lair.and now they have to risk everything to stop Ilana. For Tristan, leaving the Lair is like going back in time. Once again, he's an outcast. Nothing will be the same when he returns-if he returns. And this time, it's not just his school that is threatened. With Ilana watching their every move, and a virtual army of students taking her orders, Tristan and Amber won't be able to succeed alone.
But they are cut off completely from the Lair. Who can they trust?