Jesabell is a shadowhunter. She is 17 and was raised by her father, who just so happens to be Valentine Morgenstern himself. Yes you may have heard that Jocylenn and Valentine had only two kids. But that's not true. that was a lie...
Valentine wanted to keep Jesabell a secret. You see after Jocylenn betrayed him and took not only The Mortal Cup but Clary also Valentine decided that he would train Jesabell. When the right time came he would not only have Jonathan to help him but use Jesabell as a special weapon. but will it be enough? Or will Jesabell do the opposite of what Valentine wants and figure everything out....to learn the untold truth of her family?