She can always tell. The others, if they notice, mostly don't point it out. Well, Cassandra would, if she thought he was putting himself in danger, but mostly they don't talk about it.

She does, though. And his mouth twists a little, not at her, but at the truth of it.

"I don't care to disturb the others," he mutters after a moment. Bad enough they're all stuck in this terrible place, huddling in a cave - he doesn't need to be waking them all with his nightmares, too.