In all his years of supernatural sleuthing, Harry Dresden has never faced anything like this: the spirit world’s gone postal. These ghosts are tormented, violent, and deadly. Someone-or something-is purposely stirring them up to wreak unearthly havoc. But why? If Harry doesn’t figure it out soon, he could wind up a ghost himself.
I have to admit that I never finished reading book 2: Fool Moon (stopping at about 38%) so I missed a few things.
Something is stirring up trouble in the Nevernever. Ghosts are being tortured – which is making them angry (and thus more powerful). This ghost torture is allowing more angry ghosts than ever to get loose to attack and kill innocents. Harry is in a race to find out what is stirring up the ghosts before it’s too late.