If you have not read The Mortal Instruments books from City of Glass onward then please restrain yourself from reading this post… it is so full of spoilers that you might have no need of reading the books to know one of the most psychotic characters ever created in the Shadow World. Kudos to Cassie Clare for having such imagination as to come up with Sebastian.
Alright you have been warned, and I am to assume you will know what I’m about to talk about or simply don’t care about the spoiler alert I just gave! Once more, Spoilers ahead. By the Angel! Read knowing that I tried to warn you.