Clockwork Prince by Cassandra Clare

In the magical underworld of Victorian London, Tessa Gray has at last found safety with the Shadowhunters. But that safety proves fleeting when rogue forces in the Clave plot to see her protector, Charlotte, replaced as head of the Institute. If Charlotte loses her position, Tessa will be out on the street and easy prey for the mysterious Magister, who wants to use Tessa's powers for his own dark ends.
With the help of the handsome, self-destructive Will and the fiercely devoted Jem, Tessa discovers that the Magister's war on the Shadowhunters is deeply personal. He blames them for a long-ago tragedy that shattered his life. To unravel the secrets of the past, the trio journeys from mist-shrouded Yorkshire to a manor house that holds untold horrors, from the slums of London to an enchanted ballroom where Tessa discovers that the truth of her parentage is more sinister than she had imagined. When they encounter a clockwork demon bearing a warning for Will, they realize that the Magister himself knows their every move and that one of their own has betrayed them.
Tessa finds her heart drawn more and more to Jem, though her longing for Will, despite his dark moods, continues to unsettle her. But something is changing in Will; the wall he has built around himself is crumbling. Could finding the Magister free Will from his secrets and give Tessa the answers about who she is and what she was born to do?
As their dangerous search for the Magister and the truth leads the friends into peril, Tessa learns that when love and lies are mixed, they can corrupt even the purest heart.

Summary taken from Goodreads

Another fabulous book from Clare, as always. But what really sets this series apart from the TMI series is the setting. Clare's writing never fails to impress me and her Victorian London is so vivid and beautiful. I felt completely transported back in time when I read this.

Another thing that Clare does way too well, love triangles. Even more in this than TMI. She makes it almost impossible to choose between Jem and Will. They are completely different people, both wonderful in there own way. Though if I'm being honest, Will has my heart completely after this one.

We finally get to see more into Will's past and we gain a  much better insight into him. Thank god! I was furious at the end of Clockwork Angel, so many unanswered questions! And while she doesn't wrap everything up, my Will curiosity was satisfied.

Jem is just wonderful too. He is such a sweetheart and has been such a loyal friend to Will, no matter how horrible he's been. If I didn't have such a soft spot for damaged bad boys I'd be head over heels for Jem. But I see him more as someone Tessa should be best friends with. Just friends, Tessa, you hear me?

The mysteries of the Magister just grow! Not to mention how Tessa came to be! Ah I cannot wait for Clockwork Princess to finally answer all my questions!

I can't say one bad thing about this book. Seriously. I think Clare is pretty much flawless and just keeps getting better with each book. I can't wait to read more by her. I hope she never stops writing about the Shadowhunter world.