UnWholly by Neal Shusterman

I'm a huge fan of Unwind and of Neal Shusterman in general, and this sequel did not disappoint. In fact, it got me even more interested in this futuristic world in which scientific advancements have made human body parts a valuable commodity—valuable enough to where people willingly justify killing teenagers for their body parts.  The main characters from Unwind are all back and fighting against unwinding in various ways. Lev is a poster child for rescued tithes, while Connor and Risa are living at the airfield and protecting hundreds of runaway unwinds. Risa, paralyzed from the waist down, sacrifices herself to protect Connor, and ends up in the company of Cam, the world's first composite human—made entirely of the body parts of unwound teenagers. His creators think he will be welcomed by humanity as the perfect person but many see him as a monster. A new character named Starkey emerges as the champion of the "storks" and an enemy to Connor's society of unwinds. It's another thought-provoking and riveting read that students are already devouring. The book stands on its own, but all the pieces are in order for an amazing third book in the trilogy.