So far I have really enjoyed the Defy series. Ignite was a good follow up to the first book. I did feel like the first book could have been a stand alone; however, with this one, it is clear that there is another book coming. 
 I do have one complaint about this book. During the course of the story Alexa basically gets caught by the "bad guy"; however, she negotiates so that she is let go. Since the "bad guy" technically had everything he wanted when he captured her, there was absolutely nothing to gain by letting her go. I basically just had to stop thinking about this and let it go. 
 Anyway, it is still a good, fun, fast read that I would definitely recommend.