City of Heavenly Fire is the last novel in the Mortal Instruments series.
The Shadowhunter World is slowly getting taken over by by Clary’s own
brother, Sebastian, the most powerful shadowhunter. As they continue
trying to fight him, some new characters are introduced like the Carstairs
and Blackthorn, (from the Last Hour Series). The final book in the
Shadowhunters is action packed, and has a lot of twists and turns as you
read this page-turner.
I thought this book book was a great finale for the Mortal Instruments
series. I liked the new characters being introduced because I then started
to read the Last Hour Series. It was a really good way to end the book
series. I would rate this book 5/5.