Dark blood - Christine Feehan

At long last you are truly back with us . . .

Zev Hunter was an elite warrior, a dark-blood dealer of death to rogue
Lycans who preyed on mankind. He was a loner, never given to personal
attachments, and damned fierce at his job. But Zev begins to question
his past and his purpose when he awakens in the darkness of the sacred
cave of warriors-and is soothed back to consciousness by the sensuously
familiar voice of one woman, the woman who has haunted his fantasies for
centuries: Branislava, member of the Dragonseeker clan.

Mother Earth called the ancients to witness your rebirth . . .

For this half-mage, half-Carpathian temptress, the ritual of awakening
Zev to the council of warriors was the only way to save him. Locked away
for his own protection, the time has now come for his rebirth, for his
blood to stir with that of the ancient warriors before him. He has been
assured by Branislava that their fates are entwined, that their spirits
are woven together for eternity and that his new purpose in life is
beyond imagining.

Now, with a blood-sworn vow of honor, mercy
and endurance, and under the influence of a siren as bewitching as
Branislava, Zev begins to wonder what his purpose is, what it means for
the future of the Carpathians and what it is about his rebirth that he
has to fear . . .

'After Bram Stoker, Anne Rice and Joss Whedon, Christine Feehan is the person most credited with popularizing the neck gripper.'
Time

'Feehan has a knack for bringing vampiric Carpathians to vivid, virile life in her Dark Carpathian novels.'
Publishers Weekly