What about the Keepers is suggestive of their true nature and intentions? What about the Searchers? Is anything known about them? Do the Searchers appear to be evil at all?

Are there any similarities between Shay and Ren? Are the two characters completely opposite, or is there something that they have in common that attracts Cal to both of them? What about Shay makes him more attractive than Ren to her?

Nurse Flynn appears several times as a nuisance in the novel, and at last as a dangerous enemy. Is their any warning to the reader that she might be more than meets the eye? If so, what? What does Cal notice about her that implies Flynn is not entirely human?

The Guardians are bound together by very powerful family and pack ties. The Keepers tend to exploit this, but are they really in...