"City of Heavenly Fire," the sixth book in Cassandra Clare's "The Mortal Instruments" series, has approximately 725 pages in its standard hardcover edition. The page count can vary slightly depending on the format and publisher, but it generally falls within that range. This concluding installment wraps up the stories of key characters and ties together various plot threads from the series.
City on Fire - novel - has 498 pages.
Rebels of the Heavenly Kingdom has 229 pages.
fivethe city of bonesthe city of ashesthe city of glassthe city of lost soulsthe city of heavenly fire
Out of the Fire has 241 pages.
4 are currently out: City of Bones City of Ashes City of Glass City of Fallen Angels There will also be two more: City of Lost Souls City of Heavenly Fire
The Teahouse Fire has 390 pages.
Secrets in the Fire has 168 pages.
Dragon's Fire has 366 pages.
Fire Sea has 414 pages.
Future on Fire has 384 pages.
Sunrunner's Fire has 320 pages.
Fire in Stubble has 410 pages.