I liked Thud. I agree with Spiky that the mystery was much more about Koom valley than about the murders, and I didn't mind that at all. I liked the Brick / Detritus relationship. And I liked Mr. Shine and the expansion of Troll culture in general.

I did find it to be a riveting read, just because I wanted to see what happened with Koom valley. But that being said, there were parts of the book that I wanted to skim through to get to the next large plot developement. Whereas usually his works rivet me to each page. The only part of the book that I REALLY didn't like was how PTerry had the women Blue Falcon Nobby by getting Tawny to dump him. I could imagine if it were somewhat reversed

male1: "Uh, dude, you're dating a whale."
male2: "You mean that I could get a hot chick?"
male1: "Well duh."
male3 comes in: "Dude, you're dating a whale."
male2: "Uh, isn't so and so your friend?"
male3: "She's still a whale."

Not a very cool scene. And then Nobby "Oh, I'm going to dump Tawny and go back to my fishmonger" is a little too convenient.

Overall a good book though.