- pages
- 541
- March
- 2009
Clary and her allies journey to Idris, the hidden homeland of the Shadowhunters, to confront war and devastating betrayals. Ancient truths about the Shadow World overturn everything they believed. Combat and shocking discoveries converge as the conflict escalates.
What is City of Glass about?
Clary, Simon, and the Lightwood siblings travel to Alicante, the hidden Shadowhunter city, hoping to find Ragnor Fell and cure Clary's mother. Instead they arrive to find the protective barrier shattered and demons pouring through. Valentine is real, he's collecting the Mortal Instruments, and he's summoning the angel Raziel to remake the world according to his vision.
The book splits time between the siege of Alicante and the hunt for Valentine. Clary discovers she has the power to create new runes, which the Clave didn't think was possible. Jace is desperate to prove his loyalty after the revelations in book two. And when Valentine finally gets what he's been working toward, the consequences are devastating and irreversible.
Read it if you want
This is the book where the mythology expands massively. The Shadowhunter city itself becomes a character, and seeing the culture that Clary only heard about comes alive. The demon siege is genuinely tense, you feel the walls closing in. Clary's new power with runes feels earned because she's been struggling with identity and self-doubt since book one.
The climax between Valentine and Raziel is stunning. What Valentine asks for versus what Clary asks for defines their fundamental difference. The fact that Clary can reshape reality through her runes, and chooses to resurrect Jace rather than stop Valentine entirely, is a powerful character moment that echoes through the rest of the series.
Who it is for
Readers who are invested in the series mythology and character relationships. If you're looking for epic fantasy stakes and angelic encounters, this delivers. Not ideal if you're just dipping in, this assumes deep knowledge of books 1 and 2. Also not for readers who find siege narratives exhausting or emotionally draining.
Content warnings
Show the content warnings
Large-scale violence (demon attacks, death of named characters), grief, betrayal, minor body horror (shadowhunters with demon weapons), references to warfare and casualties.
Full plot and ending (spoilers)
Valentine dies when he summons Raziel. Raziel turns out to be far more powerful and less corruptible than Valentine expected, and crushes him. Jace dies in the climax but is resurrected by Raziel at Clary's request. This ties them together in ways that won't be fully understood until later books. Sebastian is revealed to be Valentine's true son, Clary's biological brother, and a half-demon, a revelation buried in the ending that sets up books 4-6.
Where it sits in The Mortal Instruments
Book 3 of 6. The climax of the Valentine arc but not the end of the series. Valentine's death frees up space for new threats. Jace's resurrection becomes key to future plot points. This is a turning point where the scope expands beyond the initial conflict.
- 1City of Bones2007
- 2City of Ashes2008
- 3City of Glass2009
- 4City of Fallen Angels2011
- 5City of Lost Souls2012
- 6City of Heavenly Fire2014
City of Glass: FAQ
How spicy is City of Glass?
City of Glass is rated 1 out of 5 on our heat scale, which we call mild. The Spice Guide explains what each level means. Spice Guide
Is City of Glass a standalone?
No. City of Glass is book 3 in the The Mortal Instruments series by Cassandra Clare. Read the 2 earlier books first. City of Fallen Angels comes next. The Mortal Instruments reading order
What are the content warnings for City of Glass?
Large-scale violence (demon attacks, death of named characters), grief, betrayal, minor body horror (shadowhunters with demon weapons), references to warfare and casualties.
How long is City of Glass?
City of Glass is 541 pages. At an average pace that is roughly 12 hours of reading.
When was City of Glass published?
City of Glass was first published on March 24, 2009.
Is City of Glass OK for teens?
Mostly, yes. It sits at 1 out of 5 for heat, so nothing explicit happens on the page. Check the content warnings for darker themes.
