"I didn't know either way." He really hasn't, he realizes, made much of an effort to find out what's happened to anyone, outside of the school. It's an unnerving thought, but it makes sense as the uneasiness it gives rise to tells him he actually doesn't want to know. Grimly, "A restricted number, I sincerely hope."
Because there are times when it's important to keep up appearances, he moves to the armchair he'd had before and sits in it with the same casually implacable, half-lidded mine now look.