"Someone's looking for Tobias. Someone who says she's his long-lost cousin. Tobias isn't sure the person is telling the truth. But she's really nice, and knows a lot about him. And what she tells Tobias definitely gets his attention."--Page 4 of cover.

While at a meeting of The Sharing, Jake's father is threatened with Yeerk infestation at the hands of his own son, yet when Jake acts on a plan to help his father, his brain suddenly locks up and leaves him helpless at a very crucial time.

Now that the Yeerk invasion of Earth is beginning to have public consequences, Marco determines to keep his father out of a secret project for developing Zero-space before he disappears like Marco's mother did.

When Rachel morphs into a starfish she has the ability to regenerate her limbs, but when she demorphs back to being Rachel there is more to her than when she started out, a twin who is super strong and even nastier than she is.

Ax and the Animorphs face the problem of deciding whether the time is ripe to go public with the facts of the Yeerks invasion and their resistance movement.

RL 5 ; 009-012. Rachael's got some pretty strange stuff happening. She can't control her morphing. What's going on ? No one's sure, but Rachael and the Animorphs have to figure it out-quickly.

"The animorphs have never met Visser Two. Until now..."

In what is supposed to be a battle to end all battles, the Animorphs are chosen by the Ellimist to face the Crayak's dreaded Howlers.

The Yeerks are working on a drug that saps humans of their free will but the Animorphs show them that human free will runs deeper than any drug can reach.