Keystone (Crossbreed, #1)

Raven Black hunts evildoers for fun, but her vigilante justice isn't the only reason she's hiding from the law. Half Vampire, half Mage,she's spent years living as a rogue to stay alive. When a Russian Shifter offers her a job in his covert organization hunting outlaws,dignity and a respectable career are finally within her grasp. The catch? Her new partner is Christian Poe - a smug, handsome Vampire whom she'd rather stake than go on a stakeout with.