Jim Butcher's Dresden files. Ghoul goblin

Summary: "It has been several months since Chicago's only wizard for hire, Harry Blacksone Copperfield Dresden, barely survived a case involving several packs of werewolves. And while he ultimately was able to prevent the Windy City from being completely engulfed in a bloodbath, it was no triumphant victory. The case began with the murder of his protege, saw Detective Ron Carmichael torn apart before his eyes, and ended with Harry estranged from Lt. Karrin Murphy, his best friend. But Harry has no time to lick his wounds, There are still things going bump in the night, and millions of innocents who are unknowingly threatened by denizens of the Nevernever. It's his job to protect them, no matter how alone he sometimes feels. And now, he's about to be drawn away from his home turf ..."