City of Glass (The Mortal Instruments 3)

For readers aged 16+ and those who enjoy a mystical plot.

To save her mother, Clary must journey to the City of Glass — the ancient home of the Shadowhunters. It doesn't matter that the Law forbids entering without permission, and violating it is punishable by death. But worst of all, Jace, it turns out, doesn't want her to go there at all, and Simon has been thrown into a Shadowhunter dungeon, wary of a vampire who isn't afraid of daylight.

In an attempt to uncover family secrets, Clary teams up with a mysterious Shadowhunter named Sebastian. Valentine is gathering all his forces to destroy the Shadowhunters once and for all, so their only hope of defeating him is to form an alliance with their ancient enemies. But can Downworlders and Nephilim forget their old enmity for a common goal? And when Jace finally realizes what he's willing to do for Clary, will she be able to harness her newfound powers and help the City of Glass, no matter the cost?