"In his interests I can do anything!" she answered fervently.
One look at her face told me I could trust her. I addressed myself again to Mr. Bruff.
"I must trouble you to put your papers aside for a moment," I said.
"Oh, certainly!" He got up with a start—as if I had disturbed him at a particularly interesting place—and followed me to the medicine chest. There, deprived of the breathless excitement incidental to the practice of his profession, he looked at Betteredge and yawned wearily.
Miss Verinder joined me with a glass jug of cold water which she had taken from a side table. "Let me pour out the water," she whispered; "I must have a hand in it!"
I measured out the forty minims from the bottle, and poured the laudanum into a glass. "Fill it till it is three parts full," I said, and handed the glass to Miss Verinder. I then directed Betteredge to lock up the medicine chest, informing him that I had done with it now. A look of unutterable relief overspread the old servant's countenance. He had evidently suspected me of a medical design on his young lady!
After adding the water as I had directed, Miss Verinder seized a moment—while Betteredge was locking the chest and while Mr. Bruff was looking back at his papers—and slyly kissed the rim of the medicine glass. "When you give it to him," whispered the charming girl, "give it to him on that side."
I took the piece of crystal which was to represent the Diamond from my pocket and gave it to her.
"You must have a hand in this too," I said. "You must put it where you put the Moonstone last year."
She led the way to the Indian cabinet, and put the mock Diamond into the drawer which the real Diamond had occupied on the birthday night. Mr. Bruff witnessed this proceeding, under protest, as he had witnessed everything else. But the strong dramatic interest which the experiment was now assuming proved (to my great amusement) to be too much for Betteredge's capacity of self-restraint. His hand trembled as he held the candle, and he whispered anxiously, "Are you sure, miss, it's the right drawer?"