This statement is nearly concluded. The whole of the evening I spent in the room of the Assistant Commissioner discussing the matters herein set forth and comparing notes with Inspector Dunbar. One important thing I learned: that I had abandoned my nightly watches too early. For one morning just before dawn someone who was not Zara had paid a visit to the house of Dr. Stuart! I determined to call upon the doctor.
As it chanced I was delayed and did not actually arrive until so late an hour that I had almost decided not to present myself … when a big yellow car flashed past the taxicab in which I was driving!
Nom d'un nom! I could not mistake it! This was within a few hundred yards of the house of Dr. Stuart, you understand, and I instantly dismissed my cabman and proceeded to advance cautiously on foot. I could no longer hear the engine of the car which had passed ahead of me, but then I knew that it could run almost noiselessly. As I crept along in that friendly shadow cast by a high hedge which had served me so well before, I saw the yellow car. It was standing on the opposite side of the road. I reached the tradesman's entrance.
From my left, in the direction of the back lawn of the house, came a sudden singular crackling noise and I discerned a flash of blue flame resembling faint "summer lightning." A series of muffled explosions followed … and in the darkness I tripped over something which lay along the ground at my feet—a length of cable it seemed to be.
Stumbling, I uttered a slight exclamation … and instantly received a blow on the head that knocked me flat upon the ground! Everything was swimming around me, but I realized that someone—Chunda Lal probably—had been hiding in the very passage which I had entered! I heard again that uncanny wailing, close beside me.
Vaguely I discerned an incredible figure—like that of a tall cowled monk, towering over me. I struggled to retain consciousness—there was a rush of feet … the throb of a motor. It stimulated me—that sound! I must get to the telephone and cause the yellow car to be intercepted.
I staggered to my feet and groped my way along the hedge to where I had observed a tree by means of which one might climb over. I was dizzy as a drunken man; but I half climbed and half fell on to the lawn. The windows were open. I rushed into the study of Dr. Stuart.
Pah! it was full of fumes. I looked around me. Mon Dieu! I staggered. For I knew that in this fume-laden room a thing more horrible and more strange than any within my experience had taken place that night.