Primal Heat (Primes, #5)

As Prime of his vampire Family, Mathias Bridger is sworn to protect his own kind at any cost -- but years of acting as a fierce guardian of his people have left him yearning for more out of life. His chance comes in the form of Phillipa Elliot, the beautiful police officer whose allure hasn't dimmed in the two years since they had a brief, torrid affair. And though she's involved with someone else now, Phillipa can't deny the feeling that Matt is her destiny.

When the Family comes under attack from fanatical vampire hunters, Matt uncovers treachery that shatters his world. So how can he possibly invite Phillipa into it? Fighting to protect his kin, he tries to push Phillipa away to the safety of her mortal life -- but he aches for her, and his will is no match for the flames of their all-consuming passion. . . .