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CHAPTER XXXI

Ambrose announced a visitor, early on the following morning, with some show of interest.

“Captain Granet to see you, sir. We’ve a good many notes about him. Would you like the book?”

Thomson shook his head.

“Thank you,” he answered drily, “I have it in my desk but I think I can remember. Is he outside now?”

“Yes, sir! He said he wouldn’t keep you for more than a few minutes, if you could spare him a short interview.”

“Any luck last night?”

Ambrose sighed.

“I was up till three o’clock again. Once I thought I was on the track of it. I have come to the conclusion now that it’s one of those codes that depend upon shifting quantities. I shall start again to-night on a different idea. Shall I show Captain Granet in, sir?”