Cassandra blinked, staring at the mirrors. Suddenly, crossing into that room didn't feel like the best of ideas. Not that there was really any other way to learn anything. Still, she paused, reaching into her dress and taking out a small bobbin with blue thread around it. She couldn't really claim credit for the idea. It was something she had seen in a vision. She no longer remembered the details of the vision itself, but the idea remained.

Thankfully.

She tied one end of the thread to the knob of the door, trying to make the situation a little less intimidating by smiling wryly. "Well," she murmured, "whoever built this chamber clearly had an ego, didn't they? Do you think it goes very far back?"