Janny Wurts

Curse of the Mistwraith is volume one of the Wars of Light and Shadow by Janny Wurts.

Magic and murder engulf the realm of Kelewan. Fierce warlords ignite a bitter blood feud to enslave the empire of Tsuranuanni. While in the opulent Imperial courts, assassins and spy-master plot cunning and devious intrigues against the rightful heir. Now Mara, a young, untested Ruling lady, is called upon to lead her …