Song Of Unmaking – Caitlin Brennan

Striving to save the Aurelian Empire, Valeria reached for too much power too quickly and a darkness rooted inside her.Unable to confess the truth, Valeria turns to Kerrec, her former mentor, one of the elite Riders from the Mountain, home of the gods. But Kerrec, too, is deeply wounded and his darkness may be even deeper than hers–and he is refusing to face it. Until his weakness nearly destroys the Riders and their immortal white stallions…As Kerrec is sent from the Mountain on a desperate quest for healing, Valeria is forbidden to follow. But compelled by a power she cannot understand and encouraged by her own stallion, she shadows Kerrec on a perilous mission.The patterns of deception and secrets have been woven, the threats of war and unrest spread throughout the land, the barbarian hordes return and once more it is Valeria–and Kerrec–who must gather their strength and wounded magic to protect all that they believe in…. But who will believe in them?