Billy blinks when they're back in the same damn building again to go through the same event. What will be different this time, they escape again? Or do they hold Erik down to keep him from killing the man? What does it even matter, if they're just going to end up here yet again?

He wants to be back home with Teddy, not going along with this new form of torture.

What now? he thinks at Charles, tired and wary and wanting to get out of there. He doesn't care where, he just doesn't want to be in this office with Erik's pain anymore.