The Unknown
1998 • 166 pages

Ratings9

Average rating3.3

15

Having learned that someone has discovered proof of alien life and hidden the proof on the top-secret base called Zone 91, Cassie and the Animorphs struggle to keep the evil Yeerks away from the place.


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Series

Featured Series

38 primary books42 released books

#14 in Animorphs

Animorphs is a 42-book series with 38 released primary works first released in 1996 with contributions by K.A. Applegate, Katherine Applegate, and Michael Grant.

#1
The Invasion
#2
The Visitor
#3
The Encounter
#4
The Message
#5
The Predator
#6
The Capture
#7
The Stranger
#8
The Alien
#9
The Secret
#10
The Android
#11
The Forgotten
#12
The Reaction

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