Besides certain Lincoln Square-dwelling, Boulevard-swigging journalists, I mean.
Michael Black, a Chicago-area cop and writer, has a great first novel called "A Killing Frost." I just finished it on the way to work (thanks, pointless CTA construction delays!), and it was a great read. It's kind of a hard-boiled detective story, features a lot of Chicago locations (including a sly mention of the Chicago Tribune) and a well-crafted plot.
It also includes two cats, kickboxing and car repairs, if you're into that kind of thing. Go check it out!