ISBN: 9780590494236    Publisher: Scholastic Year of publishing: 1998     Format:  Paperback No of Pages: 170        Language: English

There's a new rumour in town. Someone has discovered an item that proves life on other planets exists. And they've been hiding it on a base called Zone 91. TheMostSecretPlaceOnEarth. Cassie, the other Animorphs, and Ax already know about life on other planets. Too well. They also realize the Yeerks will try to access Zone 91. To find out if what's there will threaten their mission. So the Animorphs decide to pay Zone 91 and Yeerks a little visit. But what they discover is not at all what they expect...
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K. A. Applegate is the author of the bestselling Animorphs series, as well as the Remnants and Everworld series, Home of the Brave, and the Roscoe Riley Rules series. She lives in Irvine, California.
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