Mr. Bruff resumed his papers, with every appearance of being as deeply interested in them as ever.  But looking towards him now, I saw certain signs and tokens which told me that the Law was beginning to lose its hold on him at last.  The suspended interest of the situation in which we were now placed was slowly asserting its influence even on his unimaginative mind.  As for Betteredge, consistency of principle and dignity of conduct had become, in his case, mere empty words.  He forgot that I was performing a conjuring trick on Mr. Franklin Blake; he forgot that I had upset the house from top to bottom; he forgot that I had not read Robinson Crusoe since I was a child.  “For the Lord’s sake, sir,” he whispered to me, “tell us when it will begin to work.”

“Not before midnight,” I whispered back.  “Say nothing, and sit still.”

Betteredge dropped to the lowest depth of familiarity with me, without a struggle to save himself.  He answered by a wink!

Looking next towards Mr. Blake, I found him as restless as ever in his bed; fretfully wondering why the influence of the laudanum had not begun to assert itself yet.  To tell him, in his present humour, that the more he fidgeted and wondered, the longer he would delay the result for which we were now waiting, would have been simply useless.  The wiser course to take was to dismiss the idea of the opium from his mind, by leading him insensibly to think of something else.

With this view, I encouraged him to talk to me; contriving so to direct the conversation, on my side, as to lead it back again to the subject which had engaged us earlier in the evening—­the subject of the Diamond.  I took care to revert to those portions of the story of the Moonstone, which related to the transport of it from London to Yorkshire; to the risk which Mr. Blake had run in removing it from the bank at Frizinghall:  and to the unexpected appearance of the Indians at the house, on the evening of the birthday.  And I purposely assumed, in referring to these events, to have misunderstood much of what Mr. Blake himself had told me a few hours since.  In this way, I set him talking on the subject with which it was now vitally important to fill his mind—­without allowing him to suspect that I was making him talk for a purpose.  Little by little, he became so interested in putting me right that he forgot to fidget in the bed.  His mind was far away from the question of the opium, at the all-important time when his eyes first told me that the opium was beginning to lay its hold on his brain.

I looked at my watch.  It wanted five minutes to twelve, when the premonitory symptoms of the working of the laudanum first showed themselves to me.