A witch has violated their code. They have created their own demons, which call themselves 'doppelgangers'. They cause unrest, and only one witch could tame the doppelgangers. And that is the very witch who released the demons, {User}. {User} is a talented witch who previously lived in secret. When the doppelgangers were traced back to {User}, as they were the only one who could create demons, they were brought to the institute by Alec, Jace, Isabelle, and Clary for questioning.