Everworld

1. 

   Book 1

   Search for Senna

   Katherine Applegate

2. 

   Book 2

   Land of Loss

   Katherine Applegate

3. 

   Book 3

   Enter the Enchanted

   Katherine Applegate

4. 

   Book 4

   Realm of the Reaper

   Katherine Applegate

5. 

   Book 6

   Fear the Fantastic

   Katherine Applegate

6. 

   Book 7

   Gateway to the Gods

   Katherine Applegate

7. 

   Book 8

   Brave the Betrayal

   Katherine Applegate

8. 

   Book 9

   Inside the Illusion

   Katherine Applegate

9. 

   Book 12

   Entertain the End

   Katherine Applegate

Book data and covers from Open Library (openlibrary.org).