Detective Carter of New Scotland Yard had joined him at the threshold, and muffled up in the gray traveling-coat was now hurrying with Smith along the corridor and out of the hotel. Carter, in build and features, was not unlike me, and I did not doubt that any one who might be spying upon our movements would be deceived by this device.

In the darkness of the apartment I stood listening to the retreating footsteps in the corridor. A sense of loneliness and danger assailed me. I knew that Inspector Weymouth was watching and listening from the room immediately opposite; that he held Smith's key; that I could summon him to my assistance, if necessary, in a matter of seconds.

Yet, contemplating the vigil that lay before me in silence and darkness, I cannot pretend that my frame of mind was buoyant. I could not smoke; I must make no sound.

As pre-arranged, I cautiously removed my boots, and as cautiously tiptoed across the carpet and seated myself in an arm-chair. I determined there to await the arrival of Mr. Jonathan Martin's friend, which I knew could not now be long delayed.

The clocks were striking eleven when he arrived, and in the perfect stillness of that upper corridor. I heard the bustle which heralded his approach, heard the rap upon the door opposite, followed by a muffled "Come in" from Weymouth. Then, as the door was opened, I heard the sound of a wheezy cough.

A strange cracked voice (which, nevertheless, I recognized for Smith's) cried, "Hullo, Martin!—cough no better?"

Upon that the door was closed again, and as the retreating footsteps of the servant died away, complete silence—that peculiar silence which comes with fog—descended once more upon the upper part of the New Louvre Hotel.

CHAPTER XII

THE VISITANT

That first hour of watching, waiting, and listening in the lonely quietude passed drearily; and with the passage of every quarter— signalized by London's muffled clocks—my mood became increasingly morbid. I peopled the silent rooms opening out of that wherein I sat, with stealthy, murderous figures; my imagination painted hideous yellow faces upon the draperies, twitching yellow hands protruding from this crevice and that. A score of times I started nervously, thinking I heard the pad of bare feet upon the floor behind me, the suppressed breathing of some deathly approach.