Tarn only stares for a few moment, trying to determine if he's serious, or simply has a strange sense of humor.

"Well, I would have thought that would be obvious. I am a reasonable person, Miles, but I also won't let myself be taken advantage of. Should you decline, you simply will not pass. Instead, you may find yourself looking rather like that fellow over there." He casually gestures to the mangled corpse laying behind him.