Here is a formidable man, Rosenblatt knew. While his assessment that Gamache was a nice man hadn’t changed, it had broadened. To include what else he now knew about Armand Gamache, having done some research the evening before.

The large and thoughtful man across from him had turned in, and on, his superiors. He’d killed. And almost been killed.

Rosenblatt had learned those eyes, as kind as they appeared, had seen things few others had. And the hand that shook his, as warm as it was, had done things.

And would again, if need be.

Michael Rosenblatt was both comforted and a little frightened by Armand Gamache.

“You obviously spent some time in the night thinking about the gun,” said Gamache. “The CSIS agents have their strengths but they’re not scientists. I’d like to hear what you make of Gerald Bull’s creation.”

Professor Rosenblatt shook his head and exhaled. “As a scientist? It’s even bigger than I imagined possible. Incredible. Powerful, but also elegant.”

“Elegant?” said Gamache. “An odd word for something destined to become a weapon of mass destruction.”

“It’s not a moral judgment, it’s just a description of the mechanics. Mostly what we mean by elegant is that it’s simple. Easy to use.”

“It’s simple?”

“Oh, yes. The best designs are. That’s its genius. It looks complex because it’s so big. But there aren’t all that many moving parts, so it would be fairly easy to manufacture and assemble. And fewer things to break down. Like a slingshot is elegant, or a bow and arrow. Or the gun you wore.”

“I rarely wore a gun,” said Gamache. “Hate the things. They’re very dangerous, you know.”

“You don’t believe in the theory of the balance of terror?” asked Rosenblatt.

“Prime Minister Pearson’s phrase to describe the Cold War?” said Gamache. “I think he used it as a condemnation and warning, not as a goal.”

“Maybe,” said Rosenblatt. “But it has worked, hasn’t it? When both sides can destroy each other, neither side is willing to pull the trigger.”

“Until you give that weapon to a madman,” said Gamache.

Rosenblatt’s face grew grim and he nodded. “That’s the flaw in the argument.”

“So Gerald Bull’s gun is elegant,” said Gamache. “But is it still relevant, or have time and technology passed it by?”

“A slingshot will still kill,” said Rosenblatt.

“And so will a bow and arrow. But it’s not an advantage when faced with a nuclear bomb.”

Rosenblatt thought for a moment. “I feel I should agree that the ICBMs of today are more dangerous than what Bull designed thirty years ago, but the fact is, they aren’t. What Gerald Bull built might be less sexy, but it gets the job done.”

“The question is, what was the job?” said Gamache.

“Yes, that is a good question.”