The Underground


by Katherine Applegate (Author)

Book Cover for The Underground

   Book 17   
Pages: 164
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Rachel, the other Animorphs, and Ax have discovered a new super weapon against the Yeerks. It's easy to get. It's lightweight. It's instant oatmeal. It doesn't actually destroy the aliens, but its effect on them is so powerful that the kids know they have to try to use it. To help slow down the invasion. It means another trip down to the Yeerk pool . . . And the possibility of not being able to get back up to the surface.

Animorphs Series—Summary and Book Order

Series: Animorphs
Reading level: 8+
Books in series: 64
Read in order? Yes
Next release: Finished
Tags: science fiction  fantasy  action  adventure  animals 

 Print series book list

Books in series order

1.   The Invasion  (1996)
2.   The Visitor  (1996)
3.   The Encounter  (1996)
4.   The Message  (1996)
5.   The Predator  (1996)
6.   The Capture  (1997)
7.   The Stranger  (1997)
8.   The Alien  (1997)
9.   The Secret  (1997)
10.   The Android  (1997)
11.   The Forgotten  (1997)
12.   The Reaction  (1997)
13.   The Change  (1997)
14.   The Unknown  (1998)
15.   The Escape  (1998)
16.   The Warning  (1998)
17.   The Underground  (1998)
18.   The Decision  (1998)
19.   The Departure  (1998)
20.   The Discovery  (1998)
21.   The Threat  (1998)
22.   The Solution  (1998)
23.   The Pretender  (1998)
24.   The Suspicion  (1998)
25.   The Extreme  (1999)
26.   The Attack  (1996)
27.   The Exposed  (1999)
28.   The Experiment  (1999)
29.   The Sickness  (1999)
30.   The Reunion  (1999)
31.   The Conspiracy  (1999)
32.   The Separation  (1999)
33.   The Illusion  (1999)
34.   The Prophecy  (1999)
35.   The Proposal  (1999)
36.   The Mutation  (1999)
37.   The Weakness  (1999)
38.   The Arrival  (2000)
39.   The Hidden  (2000)
40.   The Other  (2000)
41.   The Familiar  (2000)
42.   The Journey  (2000)
43.   The Test  (2000)
44.   The Unexpected  (2000)
45.   The Revelation  (2000)
46.   The Deception  (2000)
47.   The Resistance  (2000)
48.   The Return  (2000)
49.   The Diversion  (2000)
50.   The Ultimate  (2001)
51.   The Absolute  (2001)
52.   The Sacrifice  (2001)
53.   The Answer  (2001)
54.   The Beginning  (2001)
+   Animorphs Chronicles: The Andalite Chronicles  (1997)
+   Animorphs Chronicles: The Hork-Bajir Chronicles  (1998)
+   Animorphs Chronicles: Visser  (1998)
+   Animorphs Chronicles: The Ellimist Chronicles  (2000)
+   Megamorphs: The Andalite's Gift  (1997)
+   Megamorphs: In the Time of Dinosaurs  (1998)
+   Megamorphs: Elfangor's Secret  (1999)
+   Megamorphs: Back to Before  (2000)
+   Alternamorphs: The First Journey  (1999)
+   Alternamorphs: The Next Passage  (2000)