Dresden Files Series Set ( Book 7 - 12 )

A modern-day mage and consultant to the police finds his stale life suddenly enlivened by the presence of a rival in the black arts. As a professional wizard, Harry Dresden knows firsthand that the "everyday" world is actually full of strange and magical things--and most of them don't play well with humans. And those that do enjoy playing with humans far too much. He also knows he's the best at what he does. Technically, he's the only at what he does. But even though Harry is the only game in town, business--to put it mildly--stinks.