He began to think that the only solution of the matter was the return of Aaron alone. The watching man would immediately realize that he had made some mistake, that he, Gordon, was in the house, or had been left at the home of a patient. He could have no possible reason for molesting the man. He would probably slip aside into a shadow, then make his way back to the road. In [pg 167] such a case Gordon determined that he and Aaron would follow him to make sure that no harm came to James and Clemency. So Gordon stood motionless waiting, in absolute silence, except for the frequently recurring mutter of fear and rage of the dog. As time went on he became more and more uneasy. It seemed to him finally that Aaron should have been back long before. He moved stealthily across the room, and consulted his watch by the low light of the hearth fire. Aaron had been gone an hour. He should have returned, for the mare was a good roadster when she did not balk. Gordon shook his head. He began to be almost sure that the mare had balked. He returned to the window. His every nerve was on the alert. The moment that James and Clemency should drive into the yard, he made ready to spring, but the horrible fear lest it should be entirely unavailing haunted him. If only Aaron would come. Then the man would slip into cover of the shadows, and steal out into the road, and Gordon would jump into the buggy, and he and Aaron would follow him. He knew the man well enough to be sure that he would never venture an attack upon James and Clemency with witnesses. [pg 168] If only Aaron would come! Gordon became surer that the mare had balked. He vowed within himself that she should be shot the next day if she had. Every moment he thought he heard the sound of wheels and horse's hoofs. His nervous tension became something terrible. Once he thought of stealing through the house, and out by the front door, and walking to meet James and Clemency so as to warn them. But that would leave the helpless woman upstairs alone. He dared not do that.
He thought then of going to the front of the house, and watching there, and endeavoring to intercept James and Clemency before they turned into the driveway. But he felt that he could not for one second relax his watch upon the watching man, and he had no guarantee whatever that, at the first sound of wheels, the man himself would not make for the front of the house. Then he thought, as always, of not disturbing the sick woman whose room faced the road. It seemed to him that his only course was to remain where he was and wait for the return of Aaron before James and Clemency. He knew now that the horse must have balked. His only hope was that James and Clemency, [pg 169] since it was such a fine night, and time is so short for lovers, might take such a long drive that even the balky mare might relent. Always he heard at intervals the trot of a horse, which only existed in his imagination. He began to wonder if he should know when Aaron, or Clemency and James, actually did drive into the yard, if he should be quick enough. Suddenly he thought of the dog: that he would follow him, and of what might happen. The dog's chain-leash was on the table. He stole across, got it, fastened it to the animal's collar, and made the end secure to a staple which he had had fixed in the wall for that purpose. As yet no intention of injury to the man except in self-defense was in his mind. If actually attacked, he must defend himself, of course, but he wished more than anything to drive the intruder away with no collision. That was what he hoped for. The time went on, and the strain upon the doctor's nerves was nearly driving him mad. Sometimes the mare balked for hours. He began to hope that Aaron would leave her, and return home on foot. That would settle the matter. But he remembered a strange trait of obstinacy in Aaron. He remembered how he [pg 170] had once actually sat all night in the buggy while the mare balked. The man balked as well as the horse. "The damned fool," he muttered to himself in an agony. The dog growled in response. Then it was that first the thought came to Gordon of what might be done to save them all. He stood aghast with the horror of it. He was essentially a man of peace himself, unless driven to the wall. He was a good fighter at bay, but there was in his heart, along with strength, utter good-will and gentleness toward all his kind. He only wished to go his way in peace, and for those whom he loved to go in peace, but that had been denied him. He began considering the nature of the man whose dark figure remained motionless on the driveway. He knew him from the first. It sounded sensational, his recapitulation of his knowledge, but it was entirely true. It was that awful truth, which is past human belief, which no man dares put into fiction. That man out there had been from his birth a distinct power for evil upon the face of the earth. He had menaced all creation, so far as one personality may menace it. He was a force of ill, a moral and spiritual monster, and the more dangerous, because of a subtlety and resource [pg 171] which had kept him immune from the law. He outstripped the law, whose blood-hounds had no scent keen enough for him. He had broken the law, but always in such a way that there was not, and never could be, any proof. There had not been even suspicion. There had been knowledge on Gordon's part, and Mrs. Swing's, but knowledge without proof is more helpless than suspicion with it. The man was unassailable, free to go his way, working evil.
Again Gordon thought he heard the nearing trot of a horse, and again the dog growled. Gordon was not quite sure that time that a horse had not passed the house. He told himself in despair that he could not be sure of knowing when James and Clemency came, and again the awful thought seized him, and again he reflected upon the man outside. Suppose, instead of wearing the semblance of humanity, he had worn the semblance of a beast, then his course would have been clear enough. Suppose it were a hungry wolf watching out there, instead of a man, and this man was worse than any wolf. He was like the weir-wolf of the old Scandinavian legend. He had all the cowardly cruelty of a wolf, he was a means of evil, but he had the trained brain of a man.
Gordon thought he heard footsteps, and the man made a very slight motion. Gordon thought joyfully that Aaron had left the balky mare, and had returned, but it was not so. He had heard nothing except the pulsations of the blood in his own overwrought brain.
He wondered if he were really going mad, although all the time his mind was steadily at work upon the awful problem which had been forced upon it. Should any power for evil be allowed to exist upon the earth if mortal man had strength to stamp it out? Suppose that was a poisonous snake out there, and not a man. What was out there was worse than any snake. Gordon reasoned as the first man in Eden may have reasoned; and he did not know whether his reasoning were right or wrong. Meantime, the danger increased every moment. Of one thing he was perfectly sure: he had no personal motive for what he might or might not do. He had reached that pass when he was himself, as far as he himself was concerned, beyond hate of that man outside. It was a principle for which he argued. Should a monster, something abnormal in strength and subtlety and wickedness, something which menaced [pg 173] all the good in the world, be allowed to exist? Gordon argued that it should not. He was driven to it by years of fruitless struggling against this monstrous creation in the shape of man. He had seen such suffering because of him; his whole life had been so turned and twisted this way and that way because of him, that he himself had in the end become abnormal, and mentally askew, with the system of things. He was conscious of it himself. He had been naturally a good, simple, broad-visioned man, full of charity, with almost no subtlety. He had been forced to lead a life which strained and diverted all these good traits. Where he would have been open, he had been secret. Where he would have had no suspicion of any one, his first sight now seemed to be for ulterior motives. He weighed and measured where he naturally would have scattered broadcast. He had been obliged to compress his broad vision into a narrow window of detection. He was not the man he had been. Where he had gazed out of wide doors and windows at life, he now gazed through keyholes, and despised himself for so doing. In order to evade the trouble which had fallen to his lot, he took refuge in another personality. Thomas Gordon [pg 174] was a man whom a happy and untroubled life would have kept from all worldly blemish. Now the gold was tarnished, and he himself always saw the tarnish, as one sees a blur before the eye. Twenty years before, if any one had told him that he would at any period of his life become capable of standing and arguing with himself as to the right or wrong of what was now in his mind, he would have been incredulous. He had in reality become another man. Circumstances had evolved him, during the course of twenty years, into something different, as persistent winds evolve a pliant tree into another than its typical shape. Gordon had lost his type.
As he stood at the window the room grew cold. The hearth fire had died down. He knew that the furnace needed attention, but he dared not quit his post and his argument. He became sure that the maid would not return that night. He knew that Aaron was sitting with his human obstinacy behind the obstinate brute, somewhere on the road. He knew that James and Clemency might at any moment drive in, and he might rush out too late to prevent murder and the kidnapping of the girl. He knew what the man was [pg 175] there for. And he knew the one way to thwart him, but it was so horrible a way that it needed all this argument, all this delay and nearing of danger, before he adopted it.
The increasing cold of the room seemed to act as a sort of physical goad toward action. "By God, it is right!" he muttered. Then he looked at the dog crouching still with that wiry intentness before the door. The dog came of a good breed of fighters. He was in himself both weapon and wielder of weapon. He was a concentrated force. His white body was knotted with nerves and muscles. The chances were good if—Gordon pictured it to himself—and again the horror and doubt were over him. He himself had acquired a certain stiffness and lassitude from years, and long drives in one position. He would stand no chance unarmed against a bullet. But the dog—that was another matter. The dog would make a spring like the spring of death itself, and that white leap of attack might easily cause the aim to go wrong. It would be like aiming at lightning. He knew how the dog would gather himself together, all ready for that terrible leap, the second he opened the door. He knew that he might be able to open the door for the leap without [pg 176] attracting the man's attention, faced as he was the other way, if he could keep the dog quiet. He knew how it would be. He could see that tall dark figure rolled on the drive, struggling as one struggles with death, for breath, under the vise-like grip on his throat. Gordon knew that the dog's unerring spring would be for the throat; that was the instinct of his race, a noble race in its way, to seize vice and danger by the throat, and attack the very threshold of life.
Gordon returned to the window. It seemed to him again that he heard a horse's trot. He felt sure that it was not the trot of the gray, who had a slight lameness. He knew the trot of the gray. He became sure that James and Clemency would the next moment enter the drive. He set his mouth hard, crept toward the dog, and patted him. As he patted him he felt the rage-crest rise higher on his back. Gordon bade him be quiet, and slipped his leash from the staple. Then he took it from the collar. He listened again. It seemed to him that his ears could not deceive him. It seemed to him that James and Clemency were coming. He was almost delirious. He fancied he heard their voices and the girl's laugh ring out. Holding the [pg 177] dog firmly by the collar, he rose and very carefully and noiselessly slipped the bolt of the door back. Then he waited a second. Then as slowly and carefully, still holding the dog by the collar, and whispering commands to hush his growls, he turned the door knob.
"There was a white flash of avenging brute force upon the man."