The Hidden Staircase
Carolyn Keene
The Unknown
K. A. Applegate
Animorphs (14)
Rakasiloya
Unknown
Captive Witness Mystery
Edges (Inverted Frontier Book 1)
Linda Nagata
Silver (Inverted Frontier Book 2)
Needle (Inverted Frontier Book 3)
Blade (Inverted Frontier Book 4)