"Then come back in an hour or two. But be sure, sir, and say nothing about your having been here before. He's a terribly suspicious man, and if he thought that you and I had been conferring, he would dismiss me straight off the reel!"

"Never fear, Brown. I wouldn't have you sacked for the world. You'll be too useful to me here."

"I really believe I shall, sir."

In another moment he had gone, and I watched him walking up the street, through a slit in the blind, until he had disappeared. It was exactly twenty minutes past ten. I hurried to my master's study and, quick as thought, turned the whole place topsy turvy. I ransacked his private drawers and scattered their contents broadcast, I even overturned his heap of reference books. I heard the latch turn in the front door as I descended the stairs.

"Oh, it is you at last, sir. Thank God!" I cried as Sir William Dagmar appeared.

He was looking like a ghost, white and utterly wearied out, and his chin was sunk upon his chest; but my words startled him, and he turned on me with compressed lips, in sudden energy.

"What is the matter, Brown?" he demanded.

"Oh, if you please, sir, I have had a terrible night!" (I poured out the words in a perfect stream.) "Just as I was going to bed, sir, it was about eight o'clock, sir, for I was uncommon tired, the bell rang. I went down to open the door and there you were standing, at least I thought it was you, sir. He looked exactly like you, and he spoke like you, sir, and he called me 'Brown,' sir——"

"Great God!" exclaimed my master, and he fell to trembling like a leaf. "What is that you say, but wait! wait!——"

He staggered into the dining room and clutched a decanter of spirit, which he held up with a shaking hand to his lips. He took a deep draught, and then broke into a frightful fit of coughing. I tended upon him as gently as a woman, and half led, half carried him to a sofa, where I forced him to lie down. But his anxiety was in flames, and as soon as he could he sat up and commanded me to proceed.