My book review

I really enjoyed the book "Fallen" by Lauren Kate. The book was fascinating and kept me wanting to turn the page. I was just a bit confused as I think she left things unexplained and it didn't really make the story make sense? If she was trying to use the cliff hanger format I don't think she used the technique well. Also some bits of the story dragged and I lost interest at times but overall I would give the book a three out five.