When he reached the summit only the marks of the flying horse's hoofs showed which way the man had gone.

CHAPTER XVIII

UNMASKED

The silvery sheen of the rising moon glittered on the surface of the pool and lay over the sombre-foliaged bush as Durham came out upon the top of the bluff above the Rider's cave.

From the moment he reached the ridge to find only the marks made by the plunging horse he had raced to get there first. Down the sharp slopes of the gullies, across the dry, rock-strewn bed of the mountain-streams, up the opposite steeps, with never a care for the risks he ran, he kept his horse at its topmost speed, sparing neither spur nor lash to urge it along. There was no time to choose the easy paths, no chance of picking his way; every moment was of value, for he knew how the wounded outlaw would make desperate haste to get to the shelter of his haven.

The gloom of the bush ere the moon rose added to his difficulties. With no landmark to serve as a guide he had to rely absolutely upon his instinctive sense of locality, and kept steadily in the one direction, although that meant riding over the rugged ground, barred by tumbled boulders and thickly growing trees, which formed the almost precipitous sides of the gullies. At any time a fall was possible; he carried his life in his hands and knew it; but the ride was a race against odds, and there was no time to heed.

He was breasting the rise of what he believed to be the last of the ridges he would have to cross, when the laboured breathing of his horse told him it was almost done. Leaning forward in his saddle, he patted it on the neck and spoke to it as a man who has realised the companionship between himself and a favourite horse will do. Responding to the encouragement, it mounted to the summit of the ridge and quickened its pace as it felt it was on level ground again. But where the other ridges had been flat on the top, this one was little more than a razor-back. No sooner was the ascent completed than the descent began. The horse caught in its stride to steady itself, tripped, stumbled, and came down. Durham was flung over its head like a stone from a catapult.

Fortunately he came to the ground on the broad of his back, though with such force that he was momentarily stunned. His horse picked itself up and stood trembling and panting long before he was able to scramble to his feet. Even when he did so his head was spinning and he could barely stand.

With unsteady steps he went to his horse and took hold of the bridle. To attempt to ride it further was obviously out of the question, and he led it slowly down to the bottom of the slope, tethering it securely to a tree in the shelter of the gully. Then, pulling himself together, he set off up the opposite slope on foot.

His head was still swimming from the concussion of his fall, and into it there came the humming he had experienced after his adventure at Taloona. It made him so dizzy that he sank down on a boulder, resting his head on his hands until the humming and throbbing should pa.s.s. As he sat there came a sound to his ears which made him start to his feet, forgetful of the giddiness, forgetful of everything save the sound and all that it signified.

Through the silence of the bush came the measured tread of a walking horse.

It was evidently crossing the gully below, for, as he listened, the pace quickened to a trot and then to a canter and then became suddenly faint and m.u.f.fled.

In an instant Durham read the significance of it. The horse had crossed the gully on to level ground and, urged by its rider, had cantered out of hearing. Exactly such a thing would happen were the gully he had crossed the one which came out on to the level sandy margin of the pool.

The realisation sent a chill through him. The rise up which he was climbing must be the ridge which formed the bluff above the cave. If he were not over it quickly, the Rider would be the first at the cave and Durham's scheme for his capture defeated.

The thought drove the last vestige of dizziness from his brain. He faced the slope and forced his way through the tangled undergrowth until he came to the top and saw the moonlight gleaming on the surface of the pool and illuminating with its silvery sheen the open s.p.a.ce at the foot.

There was no sign of the horse he expected to see, and no sound came from the cave. With his carbine ready, he crept slowly and silently down until he was at the mouth. A stray moonbeam fell upon the spot where he had seen the clothes on his former visit. The spot was bare.

He was about to step into the cavern when he heard the distant tread of the horse. Quickly drawing back, he hid himself behind a clump of shrubs which sheltered him, while leaving him a clear view in front up to the line of bushes stretching from the bank to the water's edge. There he waited, while the sound of the horse approaching became more and more distinct.

Presently it was so clear he could hear the snapping of the twigs of the undergrowth as they were trampled down, and he levelled his carbine so as to cover the man immediately he and his horse emerged from the line of bushes. But when the animal appeared, for the moment Durham thought it was riderless. Only when it reached the middle of the open s.p.a.ce and was almost directly below him did he see the man, lying forward over the withers, with his arms weakly clinging to the horse's neck and his legs swaying limply as they dangled with the feet out of the stirrups.

Of its own accord the horse stopped. The man painfully pushed himself up until he was able to turn his head and look from side to side.

He was scarcely ten yards from Durham, and the clear light of the moon revealed the face as distinctly as though it were day. The close-cropped hair, fair almost to whiteness, the eyebrows and eyelashes of the same hue; the general form of the face showing above the beard were incongruously, yet elusively, familiar, while the pallor of the cheeks and the anguish of the eyes told of the terrible injury the man had sustained.

He was trying to push himself up so as to sit in the saddle. Only his arms seemed to have any strength, for the legs still dangled limply and the fingers clutched the horse's mane convulsively as the body swayed.

The moonlight fell full upon the face, glistening on the beads of moisture which stood out on the skin.

A twinge of pity pa.s.sed through Durham's heart as he watched the agony of the stricken wretch. The effort to maintain his balance was more than the weakened muscles could stand. A deep groan broke from his lips as his arms gave way; his head fell and he plunged forward, slipping over the horse's shoulder and coming head first to the ground, where he lay in a limp, dishevelled heap.

Freed from its burden, the animal stepped forward and moved to a tree where it had evidently been accustomed to find its feed, for it snorted impatiently and shook itself as it sniffed round the trunk. But Durham had no eyes for it; he was watching, with fascinated intentness, the figure lying motionless on the ground.

Slipping from behind the sheltering shrubs, he approached the man with noiseless steps. There was no sign of life in the figure which lay as it had fallen, but across the lower part of the back the clothes were stained with blood. A bullet had struck him almost on the spine, and the dangling limbs were explained. The shot had paralysed them.

Durham stooped over him. The faintest flicker of breathing showed he was still alive. He lay on his face, his arms out-flung, his legs twisted.

Drawing the arms together, Durham slipped a strap round them above the elbows so as to hold them secure. Then he partly lifted him from the ground and dragged him to the mouth of the cave, where he sat him with his back against the rock.

The head drooped forward. In his waist-belt there was a revolver-pouch which Durham, on removal, found to contain a revolver of heavy calibre loaded in all chambers.

Now that he was unarmed and secured, Durham knelt beside him to try and revive him. He gently raised the head and rested it against the stone, holding it steady with one hand while with the other he lifted off the false beard.

As the disguise came away and left the face fully exposed, Durham's heart stood still. With a cry he sprang to his feet, staggering back to stand, with clenching hands and throbbing temples, staring blankly at the white, drawn face upturned to his.

The humming roar was again in his ears, a trembling seized his limbs, his brain reeled and the scene spun before his eyes.

"Oh, my G.o.d!" he cried.

Slowly the eyelids lifted and a spasm of pain contracted the pallid face. The glance rested for a moment on Durham as a faint wan smile flickered round the corners of the bloodless lips and the eyelids drooped again.

The sound of his own voice in a hoa.r.s.e, strained whisper jarred on Durham's ears.

"You!" he gasped. "_You!_"

The eyes opened once more.

In a weak, wavering tone came disjointed words.

"You said--you--would shoot him--like a dog--and I told you--it would--kill--me if you--did."

As white as his captive, Durham stood dumbfounded.

The feeling of horror which had come upon him when first he recognised the face overwhelmed him. His heart went dead and his brain numbed. All the roseate dreams of his romance turned to dull grey leaden grief to flaunt and mock him.

Like the panoramic vision said to come to the minds of the drowning, the incidents on which his love had dwelt in cherishing delight pa.s.sed before him. He saw again the sparkling eyes which had filled him with such gladness when first that love had come to him; saw the picture made by the wonderfully graceful form leaning against the verandah at Waroona Downs, bathed in the soft, romantic light of the new-born moon; saw the pleading face turned to him as the gentle voice spoke endearing words to gain a pa.s.sing favour; saw once more that fleeting, taunting vision on which he had built so much despite the warning to beware of the vagaries of a delirium-swayed brain.

The visions pa.s.sed. Before him, crippled and ghastly in the last agony of life, lay the author of this diabolical outrage upon every sensibility of his manhood.

A rage of blind, ungovernable fury swept over him. The primitive instinct of revenge, the savage longing to wreak, while there was yet time, a last fierce vengeance on the one who had betrayed him, filled his being. With a cry which ended in a curse he sprang to where his carbine lay, seized it by the barrel, and swung it round his head as he turned back upon his prisoner.

A gasping sigh came from the prostrate form, and the head rolled lolling to one side.

The carbine fell from Durham's hands and he stood motionless, looking down at the figure from which all signs of life had gone.

As quickly as it had come the paroxysm of rage left him.

The man was dying, if not dead, and the hideous riddle of the mystery still unsolved!

He must not die! He must not pa.s.s beyond the reach of human knowledge with the truth of that tragic drama in which he had played the leading part unrevealed.

Durham rushed to the pool, filled his cap with water and came back with it. Lifting up the drooping head, he moistened the nerveless lips and bathed the cold temples and pallid cheeks.