The Master grinned to himself, taking another bite of his dinner, though he mostly ignored the cameras for now. No matter how fast they walked, it would be rather boring for a bit. Though he'd be surprised if they took the lift - not that them in the basement would be any more amusing than watching them walk along long, dimly lit, and empty halls.
Though the lighting along them might be enough for them to follow it anyway, with the hopes of another set of stairs or a branch off in another direction that they couldn't see in the gloom.