Entertaining YA is what this book is. Nothing original or profound, but definitely entertaining.
The book is an interesting blend of Harry Potter, Supernatural, Twilight, and - for obvious reasons - Star Wars. I knew where the story was headed from early on, because the author isn't exactly skimping on the hints. In a way the "twist" was even a welcome direction to take, all things considered.
Character-wise the book seemed to limp a little bit. Clary and Jace aren't really relatable and they are actually pretty annoying in parts, but luckily the sidekicks have more promoise for the future. I would like to see something from the point of view of Simon, Alec, Isabelle or even Hodge (why not even Church?)
If anything, this first installment in the series gives the followups a lot to improve on. I'll definitely be reading on.
(Also, the writing style is pretty fanfictiony some how. Now, that is not necessarily a bad thing if you're looking for a light read - just that if you don't like fan fiction, you prolly won't like this either.)
Re-read June/2017 - This was somehow better the second time around, having now read it with lower expectations.