The Absolute (Animorphs #51) (Animorphs (Quality))
The Absolute: The Yeerks are on to the Animorphs - and now they're in hiding. Things are falling apart, and for once, Jake may not be be able to make the decision that will save them...The Sacrifice: The war between the Yeerks and the Animorphs is still raging. There are no more secrets, but there are plenty of lies. The Animorphs are fighting harder than they ever thought they could. And they're about to face the biggest decision they've ever had to make. A decision that may break them all.
By Katherine A. Applegate (Author)