It's actually very good. Our hero, Harry Dresden, is a hardboiled private investigator who also happens to be a wizard, and is routinely called in to help solve mysterious cases in Chicago. The plot here, involving odd goings-on and strange deaths in the Lincoln Park Zoo, is pretty straightforward; the villain, being English, is easy to spot, and the rest is just routine defeat the bad guys stuff. But it is told vividly and with a certain humour, and very well drawn by Ardian Syaf (who is also mizkit's illustrator for Chance). This is my first encounter either with the Dresden Files or with Syaf's work, and it has certainly whetted my enthusiasm for both - especially for Syaf.
Will rank this behind the Serenity story on the ballot but not far behind!