From page 140 of the Entertainment Weekly summer movie double issue:
PROVEN GUILTY
Jim Butcher Supernatural creatures disguised as horror-movie monsters attack a splatter-flick convention in Chicago, so the White Council of wizards enlists the help of disgraced spell caster Harry Dresden. … B+
There’s more there, but there’s what might be a mild spoiler in the part we’re leaving out. Buy the book, then read the rest!