Uncharted...Book 18 in the Brides of the Kindred Series

Commander Terex has had a terrible life. First he lost his mate, then he was taken over by an evil demon, then attacked and mutilated by the Dark Kindred, Two—enemy of his kind. He feels broken and the only thing that can make him whole again is vengeance—or so he thinks.
Elaina Thornton has a secret grief—a sister who is terminally ill with no hope of recovery. She too, feels broken inside—unable to do anything but grieve.
But then a prophesy is spoken—Elaina's healing and Terex's vengeance lie in the same direction, in the mysterious Dark Sector. Ships that fly into this part of the universe never return and yet this is where they must go.
Despite Elaina's fear, she is willing to risk anything to save her sister. Terex just wants revenge. Neither of them is looking for love but sometimes the Goddess has plans of her own. What awaits them in the Dark Sector—love or death? You'll have to read Uncharted to find out!