Grave Peril / Jim Butcher / 454 p.

Ghosts are getting really, really mean in Chicago Land in this supernatural mystery.  Openly practicing Wizard, Harry Dresden, fights along side Michael--a Knight of the Cross--to find out what is behind the evil visitations and to save his police buddy, Karrin Murphy. Their search leads them into a trap devised by the local vampire court.  And to Harry's horror, his girlfriend Susan is entangled as well.