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 to destroy the Yeerk ship, the kids make a startling discovery: an underwater civilization. Have the kids discovered Atlantis... or is it just another trap?

While Jake and the other Animorphs try to stop Visser Three from reaching the Pemalite ship at the bottom of the ocean, they discover a strange underwater civilization.

Her human name is Eva. There was a time when she had a loving husband and a son, Marco. When she had a wonderful career. But that was before she was infested by Edriss 562. Before the invasion of Earth. Now, Edriss 562 lives in Eva's head and controls her every movement. And through Eva, Edriss has become the highest-ranking general in the Yeerk empire, surpassing even her arch rival, Visser Three. She is Visser One.But it has become known that Visser One's tactics for attaining her current position were less than acceptable -- even to the Yeerks. Now she's on trial for treason. If she's found innocent she'll continue to rule. But if she's found guilty, she'll lose her life -- and possibly the life of her host, Eva. Which will mean that Marco will never, ever see his mother again...

Morphing into killer whales, the Animorphs discover a whole new world where humans with gills exist in the deep waters below.

The battle is still raging, and it's out-and-out war. Jake and the other Animorphs have found a way to slow the Yeerks down, but now the Yeerks have decided the best way to win is to just destroy everything and everyone who gets in their way.Just when things look hopeless, Jake and the others discover help where they least expected: Taxxons. Creatures so foul and heartless, it's hard to believe that they're capable of having any feelings. But Jake and the others soon discover that the Taxxon resistance has its own problems with the Yeerks. And for once, it looks like Earth may have a chance....

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 by the Yeerks. Jake has to find out if the other Animorphs are still around. Still somehow fighting. Or if he's really on his own...

Shivers series-Book #7.