Dresden 1 - Storm Front - 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 don't play well with humans. That's where Harry comes in. Takes a wizard to catch a-well, whatever. There's just one problem. Business, to put it mildly, stinks.

So when the police bring him in to consult on a grisly double murder committed with black magic, Harry's seeing dollar signs. But where there's black magic, there's a black mage behind it. And now that mage knows Harry's name. And that's when things start to get interesting.

Magic - it can get a guy killed.