Eighteen years ago, a rogue Army doctor secretly experimented with a chromosomal drug on unknowing pregnant women. When he was killed not long after the children were born, any knowledge and evidence seemed to die with him - except for the living, breathing, human products of his work.
Almost two decades later, the newly self-proclaimed "open-book" military unearths the truth about the experiment, bringing Clio Kaid and the other affected teens to a state-of-the-art, isolated campus where they soon discover that C9x did indeed alter their chromosomes, its mutations presenting as super-human abilities. The military kids, who come from across the nation and all walks of life, come into their own as lighter-than-air 'athletes'; 'indies' as solid as stone walls; teens who can make themselves invisible and others who can blind with their brilliance.
While exploring her own special ability, forging new friendships and embarking on first love, Clio also stumbles onto information indicating that the military may not have been entirely forthcoming with them and that all may not be as it seems...
When I first read the description of this book I was intrigued. At first it made me think of the X-Men franchise. I have to say Shelley soon got that thought right out of my head upon starting this book. Calliope "Clio" Kaid travels to New Jersey from New Orleans to an isolated campus to find out what exactly C9x is and what that means to them. C9x is the whole reason behinds the kids super-human abilities. While Clio is there she meets Jack, Bliss, Garrett, Miranda, and eventually Alexis. They become fast friends and eventually become something like the Scooby-Doo Gang. The kids soon discover that this is not the "open-book military" that they were lead to believe. Instead they are there for a more sinister and diabolical purpose. I thoroughly enjoyed reading this book and was very impressed by Shelley's knowledge of the military and the science behind the kids transformations. Even though there is a romance between Clio and Jack it is not the focal point of this whole book is about which is kind of refreshing. What I also enjoyed was the fact that there were not too many characters that I needed to wonder how they fit into this story or why are they even in this story. Shelley made C9x the core of her story and she did not let it fall by the way side. She made sure we, as the reader, were enthralled by the C9x experiment and the cloak and dagger secrecy of what the military is keeping from the kids. I think everyone who reads this book will enjoy it as much as I did. On a scale of 1-10 I give this book a 10. I am so on the look out for Settling (Solid book 2).