One with the Night (The Companion Series)

Jane Blundell's keen intellect and wit have always set her apart from her marriage-minded peers. But such differences are nothing compared to the change that comes upon her when she is infected by a blood sample in her father's laboratory. Suddenly, her veins resonate with a terrifying, exhilarating power. Dr. Blundell takes Jane to the Scottish highlands where she collides with the only man who can understand her hunger--and slake her unending desire…
 
Callan Kilkenny has returned to England from Marrakech, still filled with self-loathing at the deeds he committed in the name of a beautiful, depraved vampire. Now that he has tracked down Dr. Blundell in hopes of a cure he has also found a kindred spirit in Jane. Her passion and her blood calls to Callan, fueling a carnal need that shocks them both with its intensity. But others have come in search of the cure, too…for reasons that are sinister and deadly. And to save Jane and the rest of their kind, Callan must risk everything--even his last chance at redemption…