Now available in hardcoverthe fourth novel in the New York Times bestselling Dresden Files series.Harry Dresdens faced some pretty terrifying foes during his career. Giant scorpions. Oversexed vampires. Psychotic werewolves. All par for the course for Chicagos only professional wizard. But in all Harrys years of supernatural sleuthing, hes never faced anything like this: the spirit worlds gone completely postal. All over Chicago, ghosts are causing troubleand not just of the door-slamming, boo-shouting variety. These ghosts are tormented, violent, and deadly. Someoneor somethingis stirring them up to wreak unearthly havoc. But why? And why do so many of the victims have ties to Harry? If Harry doesnt figure it out soon, he could wind up a ghost himself.