The Solution
David, the newest Animorph, is not what he appears. His need to control the other Animorphs and Ax is all he thinks about. And the things he does are starting to break up the group.

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...
Extraterrestrial beings, Juvenile fiction, Fiction, Science fiction, Metamorphosis
Katherine Applegate
Katherine Alice Applegate is an American writer, best known as the author of the Animorphs, Remnants, Everworld and other book series. She won the 2013 Newbery Medal for her children's novel The One and Only Ivan. Applegate's most popular books are science fiction, fantasy, and adventure novels. She won the Best New Children's Book Series Award in 1997 in Publishers Weekly. Her book Home of the Brave has won two awards. - [wikipedia](https://en.wikipedia.org/wiki/Katherine_Applegate)