Rachel morphs into a cat to discover why her best friend is acting strange.

Cassie discovers Ax, an injured Andalite, has crashed on the earth. Can Ax trust the Animorphs?

The homesick Ax uses a high-powered telescope to contact his father.

The Animorphs must infiltrate a new health clinic and stop the Yeerks before the governor is infected!

Jake is acting pretty normal after falling into a Yeerk pool. The Animorphs keep Jake under close watch.

An omniscient alien shows the Animorphs the probable future: the complete Yeerk domination of the earth.

The Animorphs discover a terrible secret about Visser One and Marco's mother.

The Animorphs destroy a Kandrona. Marco vows to fight the Yeerks until he gets his mother back.

The Animorphs discover that the Yeerks are dying in the heads of many Controllers. They fight to save freed Controllers.