I have finally read this. I knew every spoiler, having both read the entirety of The Mortal Instruments as well as just existing on the Internet in the near-decade since this book was released, but my experience was not diminished in the slightest. I can finally tell Gideon and Gabriel apart, and I ended up liking them both. I even really liked Gabriel and Cecily (I care less for Gideon and Sophie, but I still like them). Jessamine, my beloved, returned to me, even if it was brief. Charlotte remains my favourite of this series and she and Henry deserve the fucking world, I love them and their relationship so much.  My love for Will, Tessa and Jem as both individual characters and a unit grew more with every minute. I am now dead because of this book, especially the epilogue. Can't wait to continue catching up on Shadowhunter books and allowing Cassandra Clare to kill me each time.