“Quite sure.”
“I mean — one of us. Or the servants, or somebody.”
“Yes.”
“So why couldn’t we just as well be poisoned?”
He thought for a moment, and chuckled.
“Poison isn’t so easy. In the first place, you have to buy it. And there are problems about that. Then, you have to put it in something. And there aren’t so many people handling food that you can do that just like blowing out a match. It’s an awfully dangerous way of killing people. I think probably more poisoners get caught than any other kind of murderer. And any smart killer knows it.”
“How do you know this one is smart?”
“It follows. You don’t send warnings to your victims unless you think you’re pretty smart — you have to be quite an egotist and a show-off to get that far — and anyone who thinks he’s really smart usually has at least enough smartness to be able to kid himself. Besides, nobody threatened to kill you.”
“Nobody threatened to kill Lissa.”
“Nobody did kill her.”