The Book
This is the story of Simon’s arrival at the Shadowhunter Academy. It continues several months after City of Heavenly Fire. Simon knows that half of his memories are not his own, but were planted in his head, and he has glimpses of memories that tell him of his friendship with Clary, relationship with Isabelle, and his time as a vampire. Most importantly, he remembers his mother’s reaction to finding out his being a vampire, and he realizes the hurt in his friends that he cannot remember them. Consequently, he feels the need to leave.