Katherine Applegate

Visser Three is still trying to find a way to reach the Pemalite ship that was hidden thousands of feet below the ocean's surface. The ship contains technology so advanced that it's superior to anything even the Andalites have built. And this time, the Visser plans to find the ship so he can use the power to complete Earth's invasion. Jake and the other Animorphs acquire additional deep-sea morphs in order to stop the Visser's plan. But while trying...

Rachel is captured by David, the sixth Animorph who was once trapped and left on a deserted island. He's back and wants revenge.

Jake is just a normal kid. Well, as normal as possible considering he can morph animals, and he's in a war against parasitic aliens. But as unbelievable as it sounds, something even stranger has happened. One morning Jake wakes up, and he's twenty-five years old. Okay. Maybe it's a nightmare. Or maybe Jake's just lost it for a while and misplaced a few years. And there's another problem. The world Jake-the-kid went to sleep in has changed. It's ruled...

The Animorphs have been split up before. And they've had to fight battles without one another. But this time is very different. Not only is Cassie totally alone, she's managed to find herself in Australia. In the rural Outback. The other Animorphs don't even know she's there. Cassie doesn't have any idea where she's going, or if she can even survive the rugged terrain. But she does know she has to get to a town or village and contact her family...

The Yeerks finally realize that the Andalite Bandits are not aliens, but humans. Now, Tobias and the other Animorphs must protect themselves.

The Animorphs have to make the most important decision they've ever faced: Do they continue to fight the Yeerks in secret, or is it time to let everyone know there's a resistance? That the Animorphs exist and Earth does stand a small chance against the invasion. Jake knows that either choice is a major one, not something that a kid should be responsible for. But he's getting tired of the pressure. Even though he realizes his friends need him to...

Ax and the Animorphs have always believed Ax was the only non-infested Andalite on Earth. That he alone survived the terrible battle between his people and the Yeerks. Until now. There were other survivors. Other Andalites. And they're here on Earth. Trying to keep a low profile. Trying to find a way to defeat Visser Three. Trying - like Ax and the Animorphs - to stay alive until help finally comes. If help finally comes...

Visser Four has found the Time Matrix, the machine Elfangor had hidden, and he plans to use it to become Visser One.

No one ever thought it would come to this. Jake, Rachel, Tobias, Cassie, Marco, and Ax know that even if they could have warned people in the beginning, no one would have believed their story. A story about an invasion of parasitic aliens. So for all this time, Jake and the other Animorphs have secretly fought a desperate battle. Secretly held the Yeerks at bay. But those days are over. It's come down to the final battle between the Yeerks and...

On trial for treason, Edriss 562 explains how she infested a series of human hosts in order to spearhead the invasion of Earth by her people, the ruthless, parasitic Yeerks.