This review will NOT, however, hold plot spoilers about City of Glass.
Clary is on a mission. She knows she's got to get to the Glass City and find a warlock who can break the spell her mom's under. She's just got one problem: getting into the Glass City is illegal unless they're expecting you.
Make that two problems: Jace doesn't want her to go. He thinks it's too dangerous for her to be there, especially with the Clave's interest in what happened on Valentine's ship. Jace is determined to protect her, even if it means lying to her to do so.
Um, make that three problems: Simon is held prisoner by the Clave. After accidentally getting dragged into the Glass City, the Clave takes a particular interest in his Daywalking abilities. A vampire who can withstand sunlight is a peculiar anomaly, and that he gained this ability after dealing with Valentine makes him doubly suspicious.
And, speaking of Valentine, add him to her list of problems. It appears that with two of the Mortal Instruments in his grasp, he's determined to have the third, even if it means a full-scale assault on the Glass City! Are the Shadowhunters strong enough to stand up against Valentine and his army of demons? Or can they put aside their differences and call on Downworlders for help? Would the Downworlders even answer their call?
Clary's determined to face all these problems head on, with or without Jace's help. Luckily, she's not short on the help of friends, especially the charming new Shadowhunter, Sebastian. But even so, she'd much rather have Jace's help. But can she convince him to work with her, even if they can't be together? Or must she face her tasks alone...
