London was one of the few Institutes that hadn't emptied yet. Apparently Sebastian and his forces tried to attack. They were rebuffed by some kind of protection spell, something even the Council didn't know about. Something that warned the Shadowhunters what was coming and led them to safety.'
'A ghost,' Magnus said. A smile hovered around his mouth. 'A spirit, sworn to protect the place. She's been there for a hundred and thirty years.'
'She?' Jocelyn said, leaning back against a dusty wall. 'A ghost? Really? What was her name?'
'You would recognize her last name, if I told it to you, but she wouldn't like that.' Magnus's gaze was faraway. 'I hope this means she's found peace.