** spoiler alert ** 
 I love the book and I can't absolutely wait for the third installment! I am still curious about Tessa being a half-Shadowhunter, and yeah, it's impossible for her to be a half-demon, too. As we all know, it's not possible that a shadowhunter could carry a demon's child. 
 I hate Tessa! I'm sorry, but I think she's confused with her feelings. She kissed Jem, then she kissed Will, and all that, then she's agreed to Jem's marriage proposal. Honestly, I don't like Jem for Tessa. I mean, Jem's too kind, and well, I could pretty much say she loves Will more than she (thinks, maybe?) she loves Jem. I just hope in the end, Jem doesn't end up having his heart broken into pieces. Anyway, I am pretty much interested in how will this love triangle end up. I end up crying in the part wherein Will finally confessed his real feelings to Tessa, why he ended up acting cruel to her sometimes. Obviously, Tessa doesn't know what to say since in this part, Tessa and Jem are engaged. I feel for Will, his heart being shattered into pieces. How he pretended to be okay when Jem and Tessa announced to everyone at the institute that they are going to get married. 
 What's more interesting is the sudden appearance of Cecily, Will's younger sister, in the institute.