Rachel and the others know that time is running out. The newest battle against the Yeerks is the most important one yet. And it's not one that will wait. Winning this fight could mean slowing down the invasion.
But no one knows what to do with David. Because the newest Animorph is more than just a little problem. He's deadly ...
For ages 9 to 12.
(From the Animorphs Series shelf.)