Knight of Darkness

Varian is a lethal assassin for Merlin, caught between his duty and a mother who serves the dark sorceress Morgen le Fey. When he is forced to choose between joining the enemy or letting a mysterious woman named Merewyn die, he finds himself protecting a target who hates him as much as he hates his own bloodline. To survive the coming battle, these two bitter rivals must find a way to trust each other before their enemies—or their own instincts—tear them apart.