The UltimateUnknown - 2001
As the struggle against the Yeerks intensifies, the Animorphs must decide whether to seek allies to help them protect their families and the free Hork-Bajir and defeat the alien invaders.
Publisher: New York : Scholastic, 
Copyright Date: ©2001
Branch Call Number: JF
Characteristics: 139 pages ; 19 cm.