It means 'Shadowhunters: Looking Better in Black Than the Widows of our Enemies Since 1234'.
She was completely alone in the world. There was no one at all for her. No one in the world who cared whether she lived or died. Sometimes the horror of that thought threatened to overwhelm her and plunge her down into a bottomless darkness from which there would be no return. If no one in the entire world cared about you, did you really exist at all?
Will grinned. “Some of these books are dangerous,” he said. “It’s wise to be careful.”“One must always be careful of books,” said Tessa, “and what is inside them, for words have the power to change us.”“I’m not sure a book has ever changed me,” said Will. “Well, there is one volume that promises to teach one how to turn oneself into an entire flock of sheep—”“Only the very weak-minded refuse to be influenced by literature and poetry,” said Tessa