Adams, Cat. Blood singer novel #7

An ifrit tries to take over Celia Graves's body so he can free thousands of evil djinn to plague mankind in Cat Adam's All Your Wishes. A client begs Celia Graves-part human, part Siren, part vampire-to help return a genie to his bottle. The attempt makes Celia a target for the currently incorporeal ifrit. If she doesn't give him her body, he'll kill everyone she loves. If she does, he'll use her physical form to free thousands of evil djinn. Celia's not going to hand over her body, but her client tries to trick her into it-so that he can kill the ifrit while it's trapped in her flesh. That doesn't end well for the client. Celia might not get paid for the gig, but she's got to get the ifrit re-bottled before all hell breaks loose-possibly literally!

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