The worst part is that this isn't a trilogy. 
 Much of the focus is on Attia and Keiro trying to obtain Sapphique's glove-a magical part of Incarceron that supposedly can provide an escape. Meanwhile, Finn is still trying to find a way to get Keiro out-while dealing with Claudia's claims he is the missing prince Giles. Chaos ensues inside and out the prison. 
 Highlights are Attia and Keiro's antagonistic relationship, which provides most of the humor. If they were your favorite characters (definitely mine), you should enjoy this book. On that note, don't read it if you didn't read the first one :)