Being a huge fan of the CoB book I had very high expectations for the movie. TMI is my favorite book series, to date, so I wanted a good solid adaptation. As far as adaptations go, the movie wasn't awful. There were lots of things that I didn't like about it, but it could have been worse. I feel like this is pretty much just a film for the fans of the book(s). If you watch this without knowing the details of the plot from reading it, you will be terribly confused. More on that in a minute.... The movie started off very well. I loved the first 15 to 20 minutes. Then we get to the part where Clary meets Jace and the movie is still good. I liked the part with Luke toward the beginning. Shortly after this though, Jace takes Clary to the Institute and it was kind of downhill from there. Now, I think the strongest points of the movie were the action sequences and the acting in general. The fight scenes were very good and entertaining and there were quite a few of them. The only fight sequence I didn't like was the ending battle scene. It it wasn't bad it just dragged on forever (at least 30 mins) and that made me not like it. The casting I was not to thrilled with, but the acting the cast provided was good overall. The actors I were not impressed with were Godfrey Gao (Magnus), Johnathan Rhys Meyer (Valintine), and Jamie Campbell Bower (Jace). Lilly Collins as Clary, Aiden Turner as Luke, and Robert Sheehan as Simon were all great. Definitely my favorites in the movie. The huge problem with the film was how the plot/background/character/world building was handled. They tried to add in some character background and some history behind Shadowhunters but it wasn't enough. And this is the reason why people will get so confused. I knew this would be a problem when I heard they were making a CoB movie, and I wasn't really surprised that the effort was being made to adapt it to film. But just think about it....this is a book that is nearly 500 pages long - it's loaded with world-building, character development/relationships, and it is just very detailed and intricate overall. How to make this into a movie? Yeah, it won't be easy.... The movie was over 2 hours long and it's still missing so many important details that are crucial to understanding. I wish there would have been less focus on making scenes that weren't critical (there mostly just to add humor or cool effects) and more focus on the story. There were also many changes to various scenes. Some of which were okay, others I did not like. I'm not going to get into that though. Apparently the CoA is going to be made. It will be interesting to see how they do with that now that the first movie has left so much "messed up" for lack of a better term. To conclude, if you love the book like me you will most likely be disappointed, and if you are not a fan or haven't read this book you might find it entertaining but won't understand much of the deeper meaning of the plot. Would't necessarily recommend it, but I'm not going to tell you not to watch it.