The Naughty List by L. A. Kelley

Murder, mystical artifacts, an invisible demon with anger management issues, and an overbearing cupid?

This isn’t a typical Yuletide tale.

The holidays had always been a magical time for Rosalie, but not this year. Her new manager at Penrose’s Department Store is determined to make this season the most profitable in the store’s history. Introducing arbitrary rules was bad enough, but forcing Rosalie into the stupid elf hat was the worst. The worst, that is, until she meets a real E.L.F. (Elemental Life Form) named David and gets lassoed into a desperate hunt for the stolen Naughty and Nice List. Now Rosalie and David must dodge a murderous invisible demon and recover the missing artifact before hellhounds track them down. The couple race against time for without the influence of the Naughty and Nice List the world will tumble into chaos.