As I'd read the first two installments of The infernal devices series the first of the mortal instruments was a new reality to me, although the story line was quite similar.The main change for me was that one story is set in Victorian times, and the one I'm reviewing now is set in modern day. As the story's are both very similar when something happens in one series you think: Is that going to happen later on in the other series? Which can be very interesting, but some people won't want secrets unveiled and will stick to one series. I am not one of these people as I'd happily read either or both but my preference would be The infernal devices as I enjoyed the Victorian approach rather than modern day. This series is for older readers as the Victorian version can be read at a younger age. 7/10 It was good but took a while to get through.