Cassandra Clare has an interesting of way of weaving plots and making you fully engaged in her story telling. And she definitely doesn't disappoint in this. 
 I'd say that the beginning of the book started a bit slow. I picked it up about 3 times and dropped it, and finally, one day when I had nothing to do, I just decided I'll go with it. 
 And I'm quite happy I did. The story was intriguing at best. The plot had a lot of twists and turns, some of them I hadn't expected. And I fell in love with some of the characters right away, like William Herondale. 
 Will's mysterious, arrogant, sarcastic attitude made me fall in love with him from the first moment they mentioned him. And it grew throughout the book. The dangerousness, mysteriousness and carelessness that his character seems to exude was vastly entertaining. Although, I wished he'd just let Tessa in instead of pushing her away. 
 Jem was another character that I fell in love with, though, not so much as Will. He's that guy--sweet, tender, kind, caring, affectionate, generous, sympathetic, all around good person. The good guy, and perhaps, I wasn't quite taken with him because he's the opposite of Will. I liked Jem a lot in this book because I felt like he balanced out Will. And I was very fond of him and Will's friendship. 
 Tessa, one of the main characters, also rubbed off on me. Her determination, fight, courage made me like her as a character. 
 There are other characters that I liked. For example, Sophie and Thomas. And the love pentagon, which became a love square has me a little worried. I know that Jem has feelings for Tessa, but I really want her to be with Will, and I don't want his feelings to get hurt. I wasn't too fond of Jessamine. 
 The only problem I found with this book was the fact that there seemed to be a few gramatical errors. I felt that the editors rushed the editing and it was a bit distracting at times. Especially since it was a 19th century novel. 
 I was sad that we didn't get to see much of Magnus in this book. I also thought that perhaps, this book should have come out first before the Mortal Instruments. Because it had the foundation and background for the MI trilogy. When reading Clockwork Angel, many themes were repreated. 
 I'm really looking forward to the next installment, especially with the way the book ended. I can't wait to see exactly what Will Herondale is hiding. And what happened to Mortmain.