Crowley looks out the window. What's changed? What's out there? What did they send? How did it find them? He had once told Aziraphale he thought that Hell might have their scents---maybe it send something that was a good tracker, could sniff them out.

He gestures out of the window, where something dark moves across the wing. It sparkles vaguely against the night.

"Do you see that?" he says. "Did you see it?"