Well, ILLUMINAE kept me up until 2 am on a worknight, so it's safe to say that I couldn't put it down. I NEEDED to know what happened next and couldn't stop until I did. It made me laugh, smile, gasp, and cry--I loved every moment of it!! The format was definitely different and I really enjoyed it! I read it on my kindle which was very difficult at times for some of the images (font was super tiny and couldn't be adjusted), but I still absolutely loved it!! Definitely recommend this one!!