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.

Harry must uncover a traitor within the Wizards of the White Council, keep a less-than-agreeable warden under wraps, and avoid coming under scrutiny himself. And a single mistake may cost someone his head--someone like Harry.

When the corpse of a brutally mutilated murder victim turns up at the time of the full moon, accompanied by some most unusual paw prints, professional wizard and supernatural investigator Harry Dresden finds himself searching Chicago for the werewolf stalking the city.

"Harry has faced terrible odds before. He has a long history of fighting enemies above his weight class. The Red Court of Vampires. The fallen angels of the Order of Blackened Denarius. The Outsiders. But this time, it's different. A being more powerful and dangerous on an order of magnitude beyond what the world has seen in a millennia is coming. And she's bringing an army. The Last Titan has declared war on the city of Chicago, and has come to subjugate...

Paranormal investigations are Harry Dresden's business and Chicago is his beat, as he tries to bring law and order to a world of wizards and monsters that exists alongside everyday life. And though most inhabitants of the Windy City don't believe in magic, the Special Investigations Department of the Chicago PD knows better. Karrin Murphy is the head of S. I. and Harry's good friend. So when a killer vampire threatens to destroy Murphy's reputation...