John Sandford – The Devil’s Code

A hacker acquaintance of Kidd’s is killed under suspicious circumstances, and his sister asks Kidd to investigate. He pokes around, and finds the signs of a bigger mystery, with threads leading to another murder, the NSA, and a mysterious hacker group called “Firewall”. The story sprawls a bit, and the plot isn’t as tight as the first two Kidd books–too much of the action seems to be going on in places other than the main narrative. And there are only a few instances where Kidd’s character gets stretched beyond a thumbnail sketch, which is a shame.