Sword of the Blood — Maria Isabel Pita

Sequel to Wolf Shield - Book One (Eternal Blood)

Accepting a ride in a limousine with a man she suspects might actually be a vampire, Audrey Goodrich discovers that blood is much more powerful than she was taught to believe. Seductive possibilities loom just a sip away. She's seriously tempted to explore them even though her attraction to the wealthy and powerful Falkon threatens her relationship with Jonathan, an ex-solider she has reason to suspect can transform into a wolf whenever the mood strikes him.

It seems that a woman she was -- long ago in another life -- still exists in her genetic code and Falkon wants her back, no matter what. After centuries of searching for his wife, he believes he has found her at last in Audrey, who desperately wishes she had paid more attention in biology class as she learns, the hard way, that it's all about blood's mysteriously eternal nature.