Katherine Applegate

Tobias and the other Animorphs already have a few problems: saving the world, keeping their identities secret, finishing their homework. Now they have one more thing to add to the list. The Yeerks have discovered a way to cause a person to demorph. And with this new device Visser Three plans on capturing "the Andalite bandits." Now what? The Animorphs realize they have to get rid of the device -- or be captured by the Yeerks. And the risk of getting...

Marco's mom is back. But she's not Visser One anymore. Marco's not even sure if she's still a Controller, but he's determined to find out. No matter what it takes. No matter what might happen. Marco wants his mom back. Jake and the other Animorphs realize that Marco is under some serious stress. And that the situation with his mom could very well jeopardize everything they've worked for. Now they also have to wonder if Marco will be the one to give...

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

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

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...

The Animorphs needed a break from the superhero stuff and everything should have been cool. But Rachel is missing and something is after the kids.

While recuperating after a car accident in Spiker Biotech's lush San Francisco facilities, sixteen-year-old Evening Spiker meets Solo Plissken, a very attractive, if off-putting boy her age who spent his life at Spiker Biotech. Like Evening, he's never questioned anything ... until now. Solo drops hints to Evening that something isn't right, and Evening's mother may be behind it. Evening puts this out of her mind and begins her summer internship project:...

Marco and the other Animorphs have managed to find out where the Yeerks are planning to build their next ground-based Kandrona. That's a good thing. But the location is supposed to be somewhere near the North Pole. That's a bad thing. The Animorphs know that the Yeerks are a "cold-blooded" species, but this is a little nuts! Who wants to be near the North Pole without Arctic morphs - and wearing spandex? Even so, the kids know that if the Yeerks...

The Animorphs have one true ally in their battle against the Yeerks: the sentient androids known as the Chee. So, when they discover that the Chee - including their friend Erek - are in trouble, they have no choice but to help. But the Chee's problem is much deeper than anything the kids could have imagined. It's hidden in the ocean. So far down that no human has ever travelled there and survived. The Animorphs realize what will happen if Visser...

Jake has to attend a wedding out of town. No one has been designated to take over as leader of the Animorphs. But when Tobias tells the others that he's found the place where Visser Three currently feeds, there is a unanimous agreement on going after him. The kids aquire cheetah morphs to run the visser down. Unfortunately, there's a new player on the scene: an inspector sent by the Council of Thirteen to check on Visser Three's eternal problems....