Lacey and Lethal — Laurann Dohner

Lacey hunts vampires--vile monsters who leave death and shattered lives in their wake. They murdered her sister and she wants revenge. Until she captures a big, sexy blue-eyed vamp, and the strong attraction she feels contradicts everything she's become. But she can't resist getting closer. Just looking at him makes her mouth water and her thighs clench.

Lethal can't believe the little lass got the better of him. He's been drugged and chained, but he's more insulted than concerned. She's bold, fearless, as she straddles his hips and threatens to use his body, teach him how it feels to be taken without consent. Now he's intrigued and eager to get her out of her clothes. She swears he's her enemy, but he's determined to be her lover.

Set in the same world as Scarred and Kilt, and Mine to Chase.