Octavia rolled her eyes at him - but turned to the door again, so maybe that was just the right prompt. She opened it, and stepped aside.

The room looked like any other room in the mansion. Only, it now had an imposing frame made of dark wood and metal in the middle of it, shaped like a rectangle and about seven feet tall, like a doorway with no wall around it. There were several metal rings attached symmetrically down either side of it. There was also a little bench next to it, which looked like a perfect fit for the base of the frame. Not everyone here was over six feet tall, after all.

And across from it, there was an armchair Octavia had commandeered from somewhere else in the house.