I've read all 18 of the VI Warshawski novels and a few of the short stories. Sometimes it gets hard to keep straight what stories go with what titles. I enjoyed the entire series, but I remember the more recent stories better than the older books. Of the earlier novels, Killing Orders, Blood Shot, Burn Marks and Hard Times are the most memorable.
I read the last six VI books in the last three months. Of these, I liked Critical Mass and the latest Fallout the best.
Fallout takes VI out of Chicago and into Lawrence, Kansas (hometown of Sara Paretsky.) VI's case combines unknown parentage, drug abuse, mental illness, political protest, national security and missing persons. VI breaks down barriers of small town residents closing ranks and racial prejudice to solve the case.
As a dog lover, I especially enjoy Peppy's role in saving the day.