Theo doesn't blink. He's seen scarier people pull knives on him. His wife for instance.

Also, the new guy is interesting now that Theo can get a better 'sense' from him. Theoirn gets Theo's full silver-eyed attention now but it's more of a 'what makes you tick' attention. Rats get that look from scientists.

"Actually, I'm from London. I've never heard of Terrelle before," he says absently, still focusing on the sort of maybe undead creature before him. "And I was just answering your lady's question. She wanted to know what a god and a king was. And you are quite interesting. Not a vampire, are you?"