Estep, Jennifer. Elemental Assassin book.

Pocket Books urban fantasy

"Old habits die hard. And I plan on murdering someone before the night is through. Killing used to be my regular gig, after all. Gin Blanco, aka the Spider, assassin-for-hire. And I was very good at it. Now, I'm ready to make the one hit that truly matters: Mab Monroe, the dangerous Fire elemental who murdered my family when I was thirteen. Oh, I don't think the mission will be easy, but turns out it's a bit more problematic than expected. The bitch knows I'm coming for her. So now I'm up against the army of lethal bounty hunters she hired to track me down. She also put a price on my baby sister's head. Keeping Bria safe is my first priority. Taking Mab out is a close second. Good thing I've got my powerful Stone and Ice magic - and my irresistible lover Owen Grayson - to watch my back. This battle has been years in the making, and there's a chance I won't survive. But if I'm going down, then Mab's coming with me ... no matter what I have to do to make that happen."-- Cover verso