"Clearly you're interrupting what had been a lovely evening." Norton says to Keller in a peevish tone. As Keller's back is turned, Norton's eyes dart around the room looking for his pistol. He's sure Keller's armed and he'd like to even the score.

He doesn't get up from the bed yet, though. Keller hasn't killed them, so he must want something (although it's possible that "something" might just be some time to play with his prey before he murders them), but Neal knows him better than Norton does, so he'll follow Neal's lead.