Nightbred. Lords of the Darkyn

New York Times bestselling author Lynn Viehl's enthralling new series continues as a valiant warrior sets out on a dangerous quest for immortality.and endless love. Jamys Durand has survived being made an immortal Darkyn, horrific torture, and years of grueling warrior training. But he has no future to offer Chris, the mortal woman he loves, without his own territory. When he learns of a lost Templar treasure, Jamys vows to possess it and win his lady's heart.
No one knows Chris Lang wants to be a tresora so she can live with Jamys, her secret love. Her superiors offer to make her dream come true, but only if she finds the lost treasure before Jamys can. Working together, Chris and Jamys track the jewels through a shadowy maze of priceless artifacts, decadent secrets, and one ruthless opponent who can possess an immortal's mind.and will stop at nothing to have Chris.