Westerfeld, S. (2009). Leviathan. NY: Simon Pulse.
I would pair Leviathan with The knife of never letting go because they both show the developmental task of how a young man and young woman can have a platonic relationship based upon their need for survival. I would also pair them because they are set in different worlds that could be Earth, but are not the world that we know. Alek and his friend, Deryn, are both holding secrets through the book. Deryn’s is that she is a girl disguised as a boy so that she can be an airman, Alek’s is that he has been named heir to the throne and can same himself, Deryn, and his country. The book is recommended for sixth to eighth grade students, but I think the material and vocabulary might be better suited for ninth-tenth graders.