The first faint spears of morning creeping through the trees which surrounded Hillside revealed two figures upon a rustic bench in the little orchard adjoining the house. A pair incongruous enough—this dark-eyed Eastern woman, wrapped in a long fur cloak, and Nicol Brinn, gaunt, unshaven, fantastic in his evening dress, revealed now in the gray morning light.  
“Look!” whispered Naida. “It is the dawn. I must go!”
 
Nicol Brinn clenched his teeth tightly but made no reply.
 
“You promised,” she said, and although her voice was very tender she strove to detach his arm, which was locked about her shoulders.
 
He nodded grimly.
 
“I’ll keep my word. I made a contract with hell with my eyes open, and I’ll stick to it.” He stood up suddenly. “Go back, Naida!” he said. “Go back! You have my promise, now, and I’m helpless. But at last I see a way, and I’m going to take it.”
 
“What do you mean?” she cried, standing up and clutching his arm.
 
“Never mind.” His tone was cool again. “Just go back.”
 
“You would not—” she began.
 
“I never broke my word in my life, and even now I’m not going to begin. While you live I stay silent.”
 
In the growing light Naida looked about her affrightedly. Then, throwing her arms impulsively around Brinn, she kissed him—a caress that was passionate but sexless; rather the kiss of a mother who parts with a beloved son than that which a woman bestows upon the man she loves; an act of renunciation.
 
He uttered a low cry and would have seized her in his arms but, lithely evading him, she turned, stifling a sob, and darted away through the trees toward the house.
 
For long he stood looking after her, fists clenched and his face very gray in the morning light. Some small inner voice told him that his new plan, and the others which he had built upon it, must crumble and fall as a castle of sand. He groaned and, turning aside, made his way through the shrubbery to the highroad.
 
He was become accessory to a murder; for he had learned for what reason and by what means Sir Charles Abingdon had been assassinated. He had even learned the identity of his assassin; had learned that the dreaded being called Fire-Tongue in India was known and respected throughout the civilized world as His Excellency Ormuz Khan!
 
Paul Harley had learned these things also, and now at this very hour Paul Harley lay a captive in Hillside. Naida had assured him that Paul Harley was alive and safe. It had been decided that his death would lead to the destruction of the movement, but pressure was being brought upon him to ensure his silence.
 
Yes, he, Nicol Brinn, was bound and manacled to a gang of assassins; and because his tongue was tied, because the woman he loved better than anything in the world was actually a member of the murderous group, he must pace the deserted country lanes inactive; he must hold his hand, although he might summon the resources of New Scotland Yard by phoning from Lower Claybury station!
 
Through life his word had been his bond, and Nicol Brinn was incapable of compromising with his conscience. But the direct way was barred to him. Nevertheless, no task could appal the inflexible spirit of the man, and he had registered a silent vow that Ormuz Khan should never leave England alive.
 
Not a soul was astir yet upon the country roads, and sitting down upon a grassy bank, Nicol Brinn lighted one of his black cigars, which in times of stress were his food and drink, upon which if necessary he could carry-on for forty-eight hours upon end.
 
In connection with his plan for coercing Harley, Ormuz Khan had gone to London by rail on the previous night, departing from Lower Claybury station at about the time that Colonel Lord Wolverham came out of the Cavalry Club to discover his Rolls Royce to be missing. This same Rolls Royce was now a source of some anxiety to Nicol Brinn, for its discovery by a passing labourer in the deserted barn seemed highly probable.
 
However, he had matters of greater urgency to think about, not the least of these being the necessity of concealing his presence in the neighbourhood of Hillside. Perhaps his Sioux-like face reflected a spirit allied in some respects to that of the once great Indian tribe.
 
His genius for taking cover, perfected upon many a big-game expedition, enabled him successfully to accomplish the feat; so that, when the limousine, which he had watched go by during the morning, returned shortly after noon, the lack-lustre eyes were peering out through the bushes near the entrance to the drive.
 
Instinct told him that the pretty girl with whom Ormuz Khan was deep in conversation could be none other than Phil Abingdon, but the identity of her companion he could not even guess. On the other hand, that this poisonously handsome Hindu, who bent forward so solicitously toward his charming travelling companion, was none other than the dreaded Fire-Tongue, he did not doubt.
 
He returned to a strategic position which he had discovered during the night. In a measure he was nonplussed. That the presence of the girl was primarily associated with the coercion of Paul Harley, he understood; but might it not portend something even more sinister?
 
When, later, the limousine departed again, at great risk of detection he ran across a corner of the lawn to peer out into the lane, in order that he might obtain a glimpse of its occupant. This proved to be none other than Phil Abingdon’s elderly companion. She had apparently been taken ill, and a dignified Hindu gentleman, wearing gold-rimmed pince-nez, was in attendance.
 
Nicol Brinn clenched his jaws hard. The girl had fallen into a trap. He turned rapidly, facing the house. Only at one point did the shrubbery approach the wall, but for that point he set out hot foot, passing from bush to bush with Indian cleverness, tense, alert, and cool in despite of his long vigil.
 
At last he came to the shallow veranda with its four sightless windows backed by fancifully carven screens. He stepped up to the first of these and pressed his ear against the glass.
 
Fate was with him, for almost immediately he detected a smooth, musical voice speaking in the room beyond. A woman’s voice answered and, listening intently, he detected the sound of a closing door.
 
Thereupon he acted: with the result, as has appeared, that Phil Abingdon, hatless, without her furs, breathless and more frightened than she had ever been in her life, presently found herself driving a luxurious Rolls Royce out of a roofless barn on to the highroad, and down the slope to Claybury station.
 
It was at about this time, or a little later, that Paul Harley put into execution a project which he had formed. The ventilator above the divan, which he had determined to be the spy-hole through which his every movement was watched, had an ornamental framework studded with metal knobs. He had recently discovered an electric bell-push in the centre panel of the massive door of his prison.
 
Inwardly on fire, imagining a thousand and one horrors centring about the figure of Phil Abingdon, but retaining his outward calm by dint of a giant effort, he pressed this bell and waited.
 
Perhaps two minutes elapsed. Then the glass doors beyond the gilded screen were drawn open, and the now-familiar voice spoke:
 
“Mr. Paul Harley?”
 
“Yes,” he replied, “I have made my final decision.”
 
“And that is?”
 
“I agree.”
 
“You are wise,” the voice replied. “A statement will be placed before you for signature. When you have signed it, ring the bell again, and in a few minutes you will be free.”
 
Vaguely he detected the speaker withdrawing. Thereupon, heaving a loud sigh, he removed his coat, looked about him as if in quest of some place to hang it, and finally, fixing his gaze upon the studded grating, stood upon the divan and hung his coat over the spy-hole! This accom............