Reviews also on our site:Readers In Wonderland 
 First let me say if it weren't for a Goodreads contest I would have never gotten the opportunity to read the first in the series, Glow. These novels were so out of my normal genre I probably would have never picked them up. What a mistake I would have made because these are amazing. 
 Even if you don't like books set in space I'm pretty sure you'll still love it, because they is just so much to love! The plot, the characters, the way its written-everything! I think I enjoyed Spark more than I did Glow because a lot more went on in this book and we know who the characters are and what to expect from them. I loved the surprises, the suspense, the action! From the first page to the last, something is constantly going on. If the suspense didn't kill you, the cliffhanger ending will! 
 Spark has showed the characters better than Glow, I think. They all seem to have more depth and are so much more distinguished, you understand the motives and reasons behind their actions. I enjoyed seeing how they all interacted together. 
 The setting is original and usually I hate descriptions but I loved them in this book. Somehow Ryan makes a spaceship seem like a realistic world-a spaceship! So much goes into it and you are able to picture it perfectly! 
 I don't want to spoil anything so get out there and read Spark yourselves! If you loved Glow you won't regret it!