Inferno by Troy Denning

In this book Ben Skywalker becomes a much more interesting character as he not only sees through Darth Caedus's lies but starts trying to manipulate him, Luke regains some of his long-lost vim & vigor, Cal Omas transcends the political for a moment, Jaina, Zekk, and Jagg go on a old-fashioned scouting mission, and Luke, Leia, and Tenel Ka accept that the Jacen Solo they knew has died. I found this entry pretty good for this series, although, in the long run, I really wish that they weren't killing off all the fun EU characters (I think getting rid of Mara was the worst).