"They are immensely valuable, these jewels?" Faraday enquired.
"They are insured for two millions," was the young man's portentous reply.
There was a little silence. I chanced to glance at Faraday, and I was almost startled by the gleam in his sunken eyes. He sat like a man in a brown study, tapping the tablecloth with his fingers.
"Has any attempt at robbery ever been made?" Leonard asked.
Gerald Formby shook his head.
"They are too well guarded," he said.
"It is interesting, this," Faraday remarked quietly. "Are the jewels kept in safes?"
The young man smiled.
"The room in which they are is in itself a safe. There are steel shutters to the windows, and steel safes let into the wall. There is a man on guard outside, day and night, and the only key in existence which could unlock the safes is in the possession of the Duke himself."
My eyes met Leonard's. For the first time I understood the only three words of admonition which we had received: