known so keen a temptation in my life, and I have never felt so deeply a self-contempt in resisting one.
“Suddenly I observed a door on the right of his chair, and I knew that Dr. Fu Manchu as an adversary might be disregarded for the moment. There was a button beside this door. I opened it and saw a second, a pace beyond. I opened this also.
“And I found myself looking into a tropical jungle! At which moment the marmoset awakened, uttered its shrill, whistling ‘ cry, and whirled past me, disappearing among the trees in that misty place....
“I turned, my automatic raised, watching Fu Manchu. He didn’t move. I ventured to take a step into that huge glasshouse. I looked all about me, at the banks of flowers, and up into the palm-tops. Further exploration would be madness, I thought. I had achieved my purpose.
“My next step was to get out, undetected, as I had got in. I had just turned, intent upon the idea of creeping back into the room ofFu Manchu, when I heard a sound of soft footsteps up among the palm-tops.
This hastened my action. Without attempting to close the communicating doors, I crept back across the carpet of the study and out into the big laboratory. I hesitated there for a moment; but finally I closed the door. I stood still, listening.
“But apart from the throbbing, which apparently never ceased, there was no movement to be perceived.
“Avoiding the black marks, I set out, moving rapidly to the right. As I neared the wall at the end of that huge place, which, as you have probably realised, is built entirely underground, an unpleasant fact dawned upon me.
“I could not remember at which point I had entered! And the blank spaces on the wall offered no clue.
“I was making tentative experiments when I heard someone come out from Dr. Fu Manchu’s study....I dived to cover.
“The black marks upon the floor I knew I must avoid, and I had just found a hiding place when someone began to walk along the laboratory towards me! Beyond the fact that he wore white overalls I had no means, from the position which I occupied, of identifying him.
“I saw this figure go up to a recess between two tall cases. The walls being divided into panels by a sort of metal beading, I was determined to make no mistake, and I crept forward in order to watch more closely.
“In my eagerness, I allowed one foot to intrude upon a black mark surrounding an instrument resembling a searchlight. The shock which ran up my leg brought me flatly to the floor. I cursed under my breath and lay there prone.
“When I ventured to look up, the man in the white overalls had disappeared.
“The wall displayed its former even surface. But I knew where the door was, and I knew that I could open it by pressing hard three feet from the floor.
“Evidently, I had not been detected. I allowed fifty of sixty seconds to elapse, and then, in turn, I opened the door. I saw a flight of stairs ahead of me, and recognized them for those which I had descended. As I crept cautiously onto the first step, the door closed behind me.
“I waited, listening.
“Very faintly, for these mechanisms are beautifully adjusted, I heard a door above being opened. I remembered it: it was the door by which I had come in.
“The rest. Sterling, you know. An unknown man, for I had never had a glimpse of your face, and your attire was unfamiliar, was moving somewhere between me and the shore which I desired to reach.”
He stopped, and:
“What’s that?” he whispered.
An elfin note, audible above the faint sound of the sea, had reached my ears, as it had reached his.
“Someone is calling me,” I said, “my absence has been noted.”
chapter thirty-third
I OBEY
I often remember the silence which fell between us at that moment. I thought I knew what Nayland Smith was thinking—perhaps because I was thinking the same myself.
“It’s asking a lot, Sterling,” he said at last. “I have a good old-fashioned police whistle in my pocket, and there’s a police boat standing by. But I told you a while ago that an idea had occurred to me.”
Remembering what Sir Denis had done that night, how, alone, he had penetrated to this secret stronghold of Dr. Fu Manchu, I set my course, and when next he spoke, I was glad I had done so. His idea was mine!
“What’s the mechanism?” he asked sharply. “You said, I think, it was a ring?”
I slipped the ring from my finger and handed it to him. Already I saw his plan, and my part in it. But I was full out for the r61e he had allotted to me, although I doubted seriously if I should live to see it through.
He stood up, and silhouetted against the skyline I saw him tugging at the lobe of his ear; then:
“I have no right to ask what I am going to ask, Sterling,” he began.
“I had thought of it already,” I interrupted. “I am game. This is a fight to a finish, and you are in charge, Sir Denis. Just give me my orders.”
He reached out and grasped my shoulder.
“Unless my calculations are wildly at fault, Sterling, Petrie is up there, in that house—dead or alive—I don’t know which. But I
Dimly I saw him slip the adjustable ring upon his finger, and then:
“I will come back to the door,” he said. “The whistle will be audible from that point to the men in the boat. Make straight for the dial—the one Herman Trenck explained to you. The curse is, you don’t know Morse.”
“I have the code in my pocket.”
“It isn’t easy to work from printed instructions,” he rapped back. “What I have in mind is this: If you are not suspected, just call your number. What is it?”
“103,” I replied. “It’s on the ring.”
“Good enough. Failing such a message within a period of ten minutes, I shall raid the house at once: I have it covered.”
“That’s quite clear, Sir Denis.”
“In the event of your giving me the O.K., I shall wait for the Morse message—but I shall wait only half an hour. The plain call again will tell me. Try to find out if Petrie is there—and if he is alive or dead. One sustained note to mean that he is there, but dead: two short ones, that he is there, but alive.”
And as he spoke he was urging me forward, up the path, grasping my arm and firing me with that vital enthusiasm of which he had such an abundant store.
“There may be difficulties about the missing ring,” I suggested.
“A point I had been considering,” he returned. “Have you any suggestions? You know the place better than I do. Where might you have lost it?—where would it be difficult to find?
“Among the aquatic plants,” I replied; “some of them grow in deep water.”
“Good!” he snapped. “Let it be the aquatic plants. Do your damnedest in the next half hour to find old Petrie; then run for it. I shall be waiting for you....”
We proceeded now in silence, groping our way along that perilous path. Once again I found myself listening for that high, strange call note; but it never came.
We mounted the many stone steps and reached the terrace. I saw a dim light shining out upon the pavement. The door was open.
“I left it open,” said Nayland Smith, in a low voice. “IT1 stay here. Send me the signal as soon as you are assured of your own safety.” He grasped my hand hard. “Good luck! In half an hour...”
As I reached the open door and realised that I was about
It passed as swiftly as it came. It was succeeded by a feeling of shame, by a memory of what Sir Denis had done that night.
I stepped inside, looking swiftly right and left. The green lamp still burned at the end of the long corridor. And remembering who was sleeping there, I watched it lingeringly. Then I looked down the stairs, and I stood still, listening.
No one was in sight, and there was not a sound audible. I pressed my finger upon the control button twice; the door closed. Then I began to descend the stairs.
Reaching the foot, I groped with my hand upon the panel which I knew concealed the door. Presently it
