My reviews of the first two books in this series hold true for this one as well. The Rise of Nine introduces more characters into a plot that doesn't have much room for its original cast to grow: the pacing is still break-neck fast. Sheer curiosity propels readers into the next chapter. The premise of the book is still interesting, despite the character issues - because the plot is paced so quickly, there's no time for the characters to pause and develop. John and Sarah, who readers have followed for three books now, are still underdeveloped and contrived. Their romance feels forced, as does the love triangle with Six; after all, how can a couple have chemistry if there aren't any developed personality traits? 
 This book might be better suited to young YA readers, who won't notice or care about as many of the cliches or the lack of character depth. This is a good read if you're looking for something that requires no thought. If you're looking for something to move you or intrigue you, this series isn't the best choice.