"Look, look!"

His words were wholly unnecessary. I, too, had seen it; a wonderful and uncanny sight. Out of the darkness under the elms, low down upon the ground, grew a vaporous blue light. It flared up, elfinish, then began to ascend. Like an igneous phantom, a witch flame, it rose, high--higher--higher, to what I adjudged to be some twelve feet or more from the ground. Then, high in the air, it died away again as it had come!

"For G.o.d's sake, Smith, what was it?"

"Don't ask me, Petrie. I have seen it twice. We--"

He paused. Rapid footsteps sounded below. Over Smith's shoulder I saw Forsyth cross the road, climb the low rail, and set out across the common.

Smith sprang impetuously to his feet.

"We must stop him!" he said hoa.r.s.ely; then, clapping a hand to my mouth as I was about to call out--"Not a sound, Petrie!"

He ran out of the room and went blundering downstairs in the dark, crying:

"Out through the garden--the side entrance!"

I overtook him as he threw wide the door of my dispensing room. Through it he ran and opened the door at the other end. I followed him out, closing it behind me. The smell from some tobacco plants in a neighboring flower-bed was faintly perceptible; no breeze stirred; and in the great silence I could hear Smith, in front of me, tugging at the bolt of the gate.

Then he had it open, and I stepped out, close on his heels, and left the door ajar.

"We must not appear to have come from your house," explained Smith rapidly. "I will go along the highroad and cross to the common a hundred yards up, where there is a pathway, as though homeward bound to the north side. Give me half a minute's start, then you proceed in an opposite direction and cross from the corner of the next road. Directly you are out of the light of the street lamps, get over the rails and run for the elms!"

He thrust a pistol into my hand and was off.

While he had been with me, speaking in that incisive, impetuous way of his, with his dark face close to mine, and his eyes gleaming like steel, I had been at one with him in his feverish mood, but now, when I stood alone, in that staid and respectable byway, holding a loaded pistol in my hand, the whole thing became utterly unreal.

It was in an odd frame of mind that I walked to the next corner, as directed; for I was thinking, not of Dr. Fu-Manchu, the great and evil man who dreamed of Europe and America under Chinese rule, not of Nayland Smith, who alone stood between the Chinaman and the realization of his monstrous schemes, not even of Karamaneh the slave girl, whose glorious beauty was a weapon of might in Fu-Manchu's hand, but of what impression I must have made upon a patient had I encountered one then.

Such were my ideas up to the moment that I crossed to the common and vaulted into the field on my right. As I began to run toward the elms I found myself wondering what it was all about, and for what we were come. Fifty yards west of the trees it occurred to me that if Smith had counted on cutting Forsyth off we were too late, for it appeared to me that he must already be in the coppice.

I was right. Twenty paces more I ran, and ahead of me, from the elms, came a sound. Clearly it came through the still air--the eerie hoot of a nighthawk. I could not recall ever to have heard the cry of that bird on the common before, but oddly enough I attached little significance to it until, in the ensuing instant, a most dreadful scream--a scream in which fear, and loathing, and anger were hideously blended--thrilled me with horror.

After that I have no recollection of anything until I found myself standing by the southernmost elm.

"Smith!" I cried breathlessly. "Smith! my G.o.d! where are you?"

As if in answer to my cry came an indescribable sound, a mingled sobbing and choking. Out from the shadows staggered a ghastly figure--that of a man whose face appeared to be streaked. His eyes glared at me madly and he mowed the air with his hands like one blind and insane with fear.

I started back; words died upon my tongue. The figure reeled and the man fell babbling and sobbing at my very feet.

Inert I stood, looking down at him. He writhed a moment--and was still.

The silence again became perfect. Then, from somewhere beyond the elms, Nayland Smith appeared. I did not move. Even when he stood beside me, I merely stared at him fatuously.

"I let him walk to his death, Petrie," I heard dimly. "G.o.d forgive me--G.o.d forgive me!"

The words aroused me.

"Smith"--my voice came as a whisper--"for one awful moment I thought--"

"So did some one else," he rapped. "Our poor sailor has met the end designed for me, Petrie!"

At that I realized two things: I knew why Forsyth's face had struck me as being familiar in some puzzling way, and I knew why Forsyth now lay dead upon the gra.s.s. Save that he was a fair man and wore a slight mustache, he was, in features and build, the double of Nayland Smith!

CHAPTER V. THE NET

We raised the poor victim and turned him over on his back. I dropped upon my knees, and with unsteady fingers began to strike a match. A slight breeze was arising and sighing gently through the elms, but, screened by my hands, the flame of the match took life. It illuminated wanly the sun-baked face of Nayland Smith, his eyes gleaming with unnatural brightness. I bent forward, and the dying light of the match touched that other face.

"Oh, G.o.d!" whispered Smith.

A faint puff of wind extinguished the match.

In all my surgical experience I had never met with anything quite so horrible. Forsyth's livid face was streaked with tiny streams of blood, which proceeded from a series of irregular wounds. One group of these cl.u.s.tered upon his left temple, another beneath his right eye, and others extended from the chin down to the throat. They were black, almost like tattoo marks, and the entire injured surface was bloated indescribably. His fists were clenched; he was quite rigid.

Smith's piercing eyes were set upon me eloquently as I knelt on the path and made my examination--an examination which that first glimpse when Forsyth came staggering out from the trees had rendered useless--a mere matter of form.

"He's quite dead, Smith," I said huskily. "It's--unnatural--it--"

Smith began beating his fist into his left palm and taking little, short, nervous strides up and down beside the dead man. I could hear a car humming along the highroad, but I remained there on my knees staring dully at the disfigured b.l.o.o.d.y face which but a matter of minutes since had been that of a clean looking British seaman. I found myself contrasting his neat, squarely trimmed mustache with the bloated face above it, and counting the little drops of blood which trembled upon its edge. There were footsteps approaching. I stood up. The footsteps quickened; and I turned as a constable ran up.

"What's this?" he demanded gruffly, and stood with his fists clenched, looking from Smith to me and down at that which lay between us. Then his hand flew to his breast; there was a silvern gleam and--

"Drop that whistle!" snapped Smith--and struck it from the man's hand.

"Where's your lantern? Don't ask questions!"

The constable started back and was evidently debating upon his chances with the two of us, when my friend pulled a letter from his pocket and thrust it under the man's nose.

"Read that!" he directed harshly, "and then listen to my orders."

There was something in his voice which changed the officer's opinion of the situation. He directed the light of his lantern upon the open letter and seemed to be stricken with wonder.

"If you have any doubts," continued Smith--"you may not be familiar with the Commissioner's signature--you have only to ring up Scotland Yard from Dr. Petrie's house, to which we shall now return, to disperse them." He pointed to Forsyth. "Help us to carry him there. We must not be seen; this must be hushed up. You understand? It must not get into the press--"

The man saluted respectfully; and the three of us addressed ourselves to the mournful task. By slow stages we bore the dead man to the edge of the common, carried him across the road and into my house, without exciting attention even on the part of those vagrants who nightly slept out in the neighborhood.

We laid our burden upon the surgery table.

"You will want to make an examination, Petrie," said Smith in his decisive way, "and the officer here might 'phone for the ambulance. I have some investigations to make also. I must have the pocket lamp."

He raced upstairs to his room, and an instant later came running down again. The front door banged.

"The telephone is in the hall," I said to the constable.

"Thank you, sir."

He went out of the surgery as I switched on the lamp over the table and began to examine the marks upon Forsyth's skin. These, as I have said, were in groups and nearly all in the form of elongated punctures; a fairly deep incision with a pear-shaped and superficial scratch beneath it. One of the tiny wounds had penetrated the right eye.