Proven guilty : a novel of the Dresden files
(Book)

"Harry Dresden is the only wizard in the Chicago phone book. He consults for the police department on those so-called "unusual" cases. He's even been on talk shows. So there's no love lost between Harry and the White Council of Wizards, who find him a little brash and undisciplined. But now war with the vampires has thinned the ranks of wizards, and the White Council needs Harry, like it or not. He's drafted as a Warden, and assigned to look into rumors of black magic in the Windy City."