Dresden Files are set in a "alternate" Chicago where magic is real, but only a few actually believe in it; it's a first-person tale told by an irascible wizard named Harry Dresden, who regularly gives the magical establishment indigestion — and the police, the same. Take Sam Spade, your Average Joe Underdog Action Star, and toss in some spellcraft, and you get Harry Blackstone Copperfield Dresden.
Storm Front by Jim Butcher Harry Dresden is the best at what he does. Well, technically, he's the only at what he does. So when the Chicago P.D. has a case that transcends mortal creativity or capability, they come to him for answers. For the "everyday" world is actually full of strange and magical things -- and most of them don't play well with humans. That's where Harry comes in. Takes a wizard to catch a -- well, whatever.
Fool Moon Business has been slow for Harry. Okay, business has been dead. And not even of the undead variety. You would think Chicago would have a little more action for the only professional wizard in the phone book. But lately, Harry Dresden hasn't been able to dredge up any kind of work — magical or mundane. But just when it looks like he can't afford his next meal, a murder comes along that requires his particular brand of supernatural expertise. A brutally mutilated corpse. Strange-looking paw prints. A full moon. Take three guesses — and the first two don't count...