A review by mugsandpugs
The Attack by K.A. Applegate

So I'm not giving a star rating, because I can't decide how good it was. If I change my mind, I'll come back and edit this.

I didn't really enjoy this one, but I'd say it's definitely essential reading for the series. There are relationship updates, new species, and a better understanding of some enemies introduced (as well as a continuation of the Ellimist/Crayak plotline).