When he stumbles on the blue box used to create the Animorphs--the shape-shifting animal-humans--David determines to become the most powerful Animorph of all, before Marco can catch him and turn him over to the Yeerks.
- ISBN10 0590496379
- ISBN13 9780590496377
- Publish Date 1 August 1998
- Publish Status Active
- Out of Print 18 October 2010
- Publish Country US
- Imprint Scholastic US
- Format Hardcover
- Pages 10
- Language English