Love is a deadly sin, and the secrets of the past are lethal. Dive into the third installment of the international bestseller series "The Mortal Instruments" and prepare to be captivated. "City of Glass" is a novel about Shadowhunters. To save her mother's life, Clary must travel to the City of Glass, the home of the Shadowhunters – not to mention that entering the city without permission is against the law, and breaking the law could mean death. To make matters worse, she learns that Jace doesn't want her there, and Simon has been imprisoned by the Shadowhunters, who harbor deep distrust towards a vampire that can withstand sunlight. As Clary uncovers more about her family's past, she finds an ally in the mysterious Shadowhunter Sebastian. While Valentine mobilizes the full force of his power to destroy all Shadowhunters forever, their only chance to defeat him is to fight side by side with their eternal enemies. But can Downworlders and Shadowhunters set aside their hatred to work together? As Jace realizes how much he is willing to risk for Clary, can she harness her newly discovered powers to save the City of Glass – no matter the cost?.