About 11 h 45 min · at 30 minutes a day, about 24 days
Estimated from the page count of this edition. Dense books can take longer than the estimate.
About the book
Seeking a cure for her mother’s enchanted coma, Clary Fray travels to Alicante, the Shadowhunter capital in Idris, where entering without permission can mean death. Jace wants her away, and Simon is imprisoned by authorities suspicious of a vampire who survives sunlight. As her father Valentine gathers a demon army, the Shadowhunters may need the Downworlders they distrust to survive. Clary must also contend with unfamiliar powers and feelings for Jace she believes are forbidden.
Reader notes
Romantic anguish runs high in this YA romantic fantasy, though physical intimacy stops at passionate kissing. The fighting is bloody, and the emotional drama often reaches melodramatic extremes. As the third Mortal Instruments novel, it assumes familiarity with the first two books.
How it reads
Writing style
Descriptive · Dialogue-driven · Direct
Tone
Dark · Romantic · Suspenseful · Tense
Structure
Linear
Driven by
Plot · Relationships · Worldbuilding
Point of view
Multiple viewpoints
Setting
Alicante, Idris · New York City
Reading complexity
Writing
2 / 5
Ideas
3 / 5
Structure
3 / 5
Background knowledge
3 / 5
About this profile
Collected’s assessment, not reader ratings. Complexity runs from 1 (least demanding) to 5 (most demanding).
Writing
How much attention the sentences and language require.
Ideas
How much interpretation or abstract reasoning the book asks of you.
Structure
How much you need to keep track of speakers, timelines and connections.
Background knowledge
Prior knowledge needed to follow the book, beyond what it explains.
Emotional intensity
Emotional pressure, from gentle (1) to intense (5). Separate from difficulty.
Yes, the third Mortal Instruments novel assumes familiarity with the first two. Clary’s search for a cure for her mother, her feelings for Jace, and Valentine’s plans continue amid the Shadowhunters’ conflicts.
How much spice is there?
The content notes flag mild sexual content.
How violent does it get?
Strong violence includes bloody fighting as Valentine gathers a demon army and the Shadowhunters face war. The dark, tense atmosphere accompanies emotional drama that often reaches melodramatic extremes.
Is it hard to read?
The direct, dialogue-driven prose and brisk pace make the language approachable. Multiple points of view and an established fantasy world add some complexity, particularly if the earlier novels are unfamiliar.
How long is it?
About 592 pages in the Margaret K. McElderry Books 2015 edition. The pace is brisk, with plot, relationships, and the fantasy world sharing the focus.
Which edition is shown here?
Margaret K. McElderry Books · 2015 · paperback. ISBN 9781481455985.
How long does it take to read City of Glass?
About 11 hours 45 minutes at 50 pages an hour, based on the 592-page Margaret K. McElderry Books edition. Dense books can take longer.
About the author
Cassandra Clare
Cassandra Clare is an American writer of young adult fantasy best known for The Mortal Instruments and its larger network of Shadowhunter stories. Her novels place young protagonists at the threshold of elaborate supernatural societies, then move them through mysteries, factional disputes, family secrets, and unstable alliances. The prose is direct and descriptive, with dialogue carrying much of the character development and romantic tension. City of Bones establishes her characteristic urban method by revealing vampires, werewolves, and demon hunters within contemporary New York, while Clary’s entrance into that hidden order ties discovery to danger and forbidden attraction. Clockwork Angel relocates the same broad world to Victorian London and adopts a more gothic atmosphere, using Tessa Gray’s shape-changing power and search for her brother to organize a conspiracy plot around questions of identity and belonging. In later Mortal Instruments novels, Clare widens the cast and alternates among linked conflicts, allowing supernatural politics, intimate loyalties, and threats to the Shadowhunters’ institutions to develop at the same time.