It was not until early in the afternoon that Grace was able to accomplish anything toward carrying out the instructions which young Lablanche had given her with respect to the phonograph. On her return to Dr. Hartmann's from her expedition to Brussels, she went at once to her room, and locked the record which Lablanche had given her in her trunk. There was nothing to be done now, until after luncheon.

When the meal was over, she asked one of the attendants, who seemed to be a sort of housekeeper, or head nurse, if there would be any objection to her taking the phonograph, which was a small and rather cheap affair, to her room. She wished to amuse herself, she explained, playing over some of the records.

The woman regarded her curiously for a moment, but as there seemed nothing out of the way in the request, she assented, with the caution, however, that she should not use the instrument except during the day. "Some of our patients are very nervous," she explained. "It might annoy them, if they were sleeping. Of course, if there are any complaints, you will not continue."

Grace got one of the nurses to carry the instrument to her room, and selected several records from those which she found in a cabinet on which it stood. There were several American records—she took all of these, and some others selected at random.

She did not play The Rosary at once, but made use of one of the other records. The horn of the instrument she directed toward the open window. When she had finished the first air, and adjusted her own record upon the plate of the machine, she felt afraid that it might at once be recognized as strange and new, but apparently no one paid any attention to it.

She continued her playing as long as she dared without running the risk of attracting undue attention. When at last she stopped, she felt as though she never wanted to hear the strains of The Rosary again.

After dinner, she determined to disregard the suggestion of the housekeeper to confine her playing to the daytime, and moving the machine somewhat nearer the window, played the song over three times in rapid succession. She had just begun to rewind the clockwork for a fourth time when there was a loud knocking at the door, and Dr. Hartmann entered hastily in response to her rather frightened "Come in."

He was scowling fiercely, and took no pains to conceal the fact that he was angry. "Miss Ellicott," he growled, "we cannot possibly permit you to play the instrument any longer. It annoys the other patients. I am surprised that my housekeeper did not inform you so at once. Several have already complained. I shall have to take it back to the library." He gathered up the instrument and started toward the door, then seemed for a moment to regret his brusqueness. "You will pardon me, I know, but it is quite out of the question. Good-evening." In a moment he had gone.

Grace sat down and burst into tears. It was not the taking away of the phonograph which distressed her—she felt that if anything could be accomplished by its use, it had already been done—but the hopelessness of the whole situation.

Nearly eighteen hours had elapsed, since she had stolen, half-fainting, from the sight of Richard's white and agonized face. Even Lablanche's assurances that Hartmann would do her husband no serious injury, failed to comfort her. The whole affair of the phonograph seemed trivial and useless. What message could the words of this song give him—what in fact could they mean to anyone, except a message of hopeless love?

When the hour for going to bed had come, she threw herself, without undressing, on the bed, and lay sleepless, in the darkened room. The vision of Richard, as she had seen him, his face within the circle of light, the night before, tortured her incessantly. It seemed somehow so wrong, so cowardly of her, to lie here in comfort doing nothing to aid him who, in name at least, was united to her forever, and in love was more dear to her than her own soul. She could not sleep, and presently rose and sat at the window, her elbows resting upon the sill, gazing hungrily out at the little square brick building where she knew Richard lay confined.

The hours of the night dragged along on leaden feet. Once she heard the closing of a door, and the sound of footsteps echoing faintly upon the cement floor of the lower corridor. Within the laboratory all seemed dark. Evidently the doctor was not there. Then she heard, through her half-opened door, noises of persons walking in the lower hallway of the main building and after that the sharp closing of a door. She concluded that Hartmann had gone into his office.

The woman on duty in the hall sat in her chair, reading and yawning. After a time, Grace heard the faint ringing of her bell, and the woman, after consulting the indicator, began to descend the stairs with a surprised look upon her face. It seemed like a providential opportunity. She slipped quietly through the doorway and sped as swiftly as she could down the hall.

She reached the door opening into the corridor, without hearing or seeing anything to cause her alarm, and passed through it unseen. As she closed it behind her, she fancied she heard someone walking quickly along the corridor beneath. The passageway in which she stood was in reality nothing but a covered bridge, a few feet wide, built for the sole purpose of providing a means of passing to the laboratory from the second floor of the main building. Beneath it, a similar passageway connected the ground floors of the two buildings.

She realized that anyone in the corridor beneath her could readily hear her footsteps on the wooden floor above, and stood, hesitating, just inside the door, waiting until they should have passed. In a few moments, the sounds below ceased, and silence again reigned.

With great timidity and caution, she began to walk toward the laboratory door. In the center of the corridor, and half way down its length, a single electric lamp shed a dim light on her path. She realized that if, by chance, anyone should be within the darkened laboratory, they could readily see her approaching, and therefore assumed once more the manner and bearing of a person walking in their sleep. She had passed the light in the middle of the corridor, and was nearing the darkened laboratory door, when suddenly she heard a faint click, and almost at once the laboratory was brilliantly illuminated.

By the light which suddenly flashed upon her, she saw two figures standing in the open door of the laboratory, watching her intently. One of these figures was Dr. Hartmann, the other the tall blond man she had seen with him in the laboratory several nights before. But it was not the sudden appearance of the two watching figures which caused her heart to sink, and a cold perspiration to break out upon her forehead. The sudden rush of light upon the floor of the passageway had shown her something else—something far more strange and terrifying. As her gaze swept ahead, she saw that, for a space of some four or five feet, in front of the laboratory door, the wooden planking which constituted the floor of the passageway had been removed, and instead of the solid foot-way there yawned blackly an impassable opening, through which, in another moment, she would plunge headlong to the concrete floor of the corridor beneath.

The sight filled her with dismay. She realized at once why Hartmann and his companion stood there watching her—why the section of flooring had been removed. He had evidently become suspicious of her movements, the night before, and had laid this trap to test her. If she was in truth walking in her sleep, she would, she supposed, walk fearlessly into the yawning gap before—if her somnambulism was a sham, a trick, she would hesitate, and her fraud be discovered.

She did not know what to do, as step by step she approached that black and gaping hole. If she kept up her pretense, if she had sufficient courage to go ahead, of what would it avail Richard or Monsieur Lefevre, should she maintain her assumed character at the expense of a broken leg, or neck? On the other hand, to halt, to hold back, would be to destroy at once all chance of her being of any further service to her husband, and that, too, at a time when he most sorely needed her.

These considerations flashed through her brain with the speed of light itself. She had scarcely taken half a dozen steps before she found herself upon the brink of the opening, and realized that the next step, if she took it, might be her last.

Then she suddenly collapsed. The effort was too great—she sank helplessly upon the floor, her face buried in her arms, her whole body shaking with the force of her sobbing.

In an instant Hartmann had sprung across the opening and grasped her by the wrist, while his companion was engaged in rapidly replacing over the gap the section of flooring which had been removed. Within a few moments the passageway was as it had been before, and the doctor was dragging her roughly into the laboratory.

She did not cry out—there was no one from whom she could expect aid. She drew herself up and faced her captor with dry eyes and a face calm, though pale. "What do you mean, Dr. Hartmann," she demanded, steadily, "by treating me in this way?"

He forced her into a chair. "Sit down, young woman," he said, gruffly. "I have a few questions to ask you."

She did so, without protest, summoning to her aid all her powers of resistance and will. He should get nothing from her, she determined.

"Why have you come into my house," he presently asked, glaring at her in anger, "under pretense of desiring medical treatment? What is it you want here?"

She made no reply, gazing at him steadily—fearlessly.

"What is this man Duvall to you?" he shouted. "Tell me, or it will be the worse for you both."

Again she faced him, refusing to answer. Her resistance made him furious. "Your silence will profit you nothing," he went on. "You can do no further harm here, for I know your purpose. You are working with him—you are a detective—a spy, as he is. You pretend to be a somnambulist in order to carry out your ends. I suspected you long ago. Now I know. This man has robbed me of something that I am determined to have. What he has done with it—where it is concealed, I do not know, but I mean to have it—be sure of that. If you know—you had better confess, if you have any regard for his welfare."

His words, his brutal manner, brought the tears to her eyes. She realized that she had but to say a few words, to save Richard from she knew not what fate, yet equally she knew that she could not say them—that he would not want her to say them. In her agitation she took a handkerchief from her dress and pressed it to her eyes.

The man Mayer had been regarding her in silence throughout the whole scene. Suddenly he stepped forward and snatched the handkerchief from her hand. His quick eyes had detected a monogram in one corner of the bit of cambric, and with an air of triumph he held it beneath the light, examining it closely.

Hartmann came to him. "What is it, Mayer?" he asked, eagerly.

His assistant extended the handkerchief to him. Grace realized with a sinking heart that it was one of several she had herself embroidered during the weeks preceding her marriage. With what pride, she reflected, she had worked over the G and D, lovingly intertwined in one corner. "His wife!" she heard Hartmann cry, with a harsh laugh. "That explains everything. That was why he did not leave Brussels at once—he was waiting for her—he would not go without her." He turned to Grace with a new expression on his face. "So you are his wife, eh? Very well. Now we shall see whether or not you will tell me what I want to know. Your husband is confined in the room below us. This"—he indicated the small black box with wires attached—"is a device which I have constructed for producing certain light rays—light rays which have a marvelous power, both for curing, and producing disease. Look!" He held his powerful hand before her eyes. "This is what they did to me, before I discovered how to control them." She saw, stretching across the back of his hand and wrist, a broad red patch, like the scar remaining after a burn. "Now come here." He seized her by the wrist and dragged her toward the apparatus at the center of the room. "Look—in there." He indicated a short brass tube which rose from the center of the box, resembling the eyepiece of a microscope. "Look!"

Grace bent over and applied her eye to the brass tube, then shrank back with an exclamation of horror. "Richard!" she screamed, then turned on Hartmann with the fury of a tigress. "Let him go—let him go—I say, or I will—" She realized her helplessness—the futility of her threats, and fell into the chair in a paroxysm of sobbing. Through the brass tube, and the powerful lens which focused the light rays upon the space below, she had seen Richard's face, white and drawn, within a disk of blinding light, and apparently so near to her that she could have reached out and touched it. In her momentary glance, she noted his reddened eyes, the tears which coursed from beneath their lids, the agony which distorted his countenance.

"Now will you tell me what I ask?" cried Hartmann, triumphantly.

Still she made no reply. Her heart was breaking, her suffering at the knowledge of his suffering made her faint and weak, but even now she could not bring herself to break the trust which Monsieur Lefevre had placed in her. She sat huddled up in the chair, shaking from head to foot with sobs.

Hartmann saw that her resistance was as yet unbroken. "Take her arm, Mayer," he called out, as he seized her by one wrist. "Come along now. We'll see if a closer view will have any effect." He snatched up a broad leather strap from a shelf along the wall, then, with Mayer's assistance, half-led, half dragged her to the iron stairway in the corner. In a few moments they had paused before the door of the room where the detective lay confined. Hartmann threw it open and pushed Grace inside, while he and Mayer followed, closing the door behind them.

For a moment Grace was dazzled by the brightness of the light cone, and the darkness of the remainder of the room. Then seeing Richard lying helpless on the floor before her, she threw herself to her knees, put her arms about his neck, and covered his face with kisses. "My darling—my poor boy!" she cried, as she bent over him, her shoulders shutting off from his tortured face the blinding rays of the light. "What have they done to you?"

Grace had remained upon her knees beside the prostrate figure of her husband but a moment, when she was torn away by Hartmann and his assistant, and before she realized their intention, the former had slipped about her waist the broad leather strap he had brought from the room above, and was busy securing it to an iron staple fixed in the wall at one side of the room. Then he stood back and surveyed the scene with a smile of satisfaction.

"You see, Mayer," he observed, grimly, "my purpose. The wife sees the husband's suffering. If he refuses to speak, she will speak. One or the other will tell us what we want to know, of that you may be sure. Let us leave them to talk matters over." He and his man at once left the room, and in a few moments Grace heard their footsteps upon the floor of the laboratory above.

"Richard," she cried, softly, "are you suffering very much?"

"Never mind, dear," he said, trying vainly to turn his head so that he might see her. "What has happened—why have they brought you here?"

She told him her story, brokenly, with many sobs. "I could not help it, Richard," she moaned. "I did my best. I could not help their finding out everything."

"I know it, dear. You have done all you could. Is there any news from outside?"

"None. They told me to play the phonograph to send you a message. Did you hear it?"

"Yes, I heard, and understood."

"Understood? Then you know something—you have some hope?"

"I do not know. It may be, although I cannot see what to do now. I dare not tell you more than that—these scoundrels are undoubtedly listening in the room above."

"Richard, what is that light? What is it they mean to do to you? Dr. Hartmann showed me his hand—it was all scarred and burned. He said it came from that." She looked toward the glowing cone of light with bitter anger.

"I do not know—exactly. I am not sure. The agony of the thing is very great—it burns into my eyes—into my brain. Hartmann says it will produce insanity. I do not know whether this is true or not. I begin to feel that perhaps it may be—not that the light itself can produce it, but that inability to sleep, pain, nervous exhaustion, the constant glare and brilliance before my eyes—those things might cause a man to go insane, if they were kept up long enough."

"But—he—he will not dare to do that."

Duvall groaned, striving in vain to turn his head to one side. "He intends to keep me here, until I tell him where he can find the snuff box," he gasped.

"Richard!" Grace fairly screamed out his name. "Then you must tell—you must! You cannot let yourself go mad—not even for Monsieur Lefevre."

"I shall not tell—no matter what comes," he replied.

"Then I will. I refuse to let you suffer like this. I can't do it, I won't. If you do not speak, I shall. Oh, my God! Don't you see—I love you—I love you so—what do I care about this foolish snuff box? I want you—you—and I won't let them take you away from me."

"Grace, you shall not tell them."

"I will."

"I forbid it."

"I cannot help it, Richard. I am ready to disobey you—if I must, to save your life. Even if you turn from me—afterward—I cannot help it. I refuse to let them go ahead with this thing."

He groaned in desperation. "Please—please—my girl—listen to me. You must not speak. We must think of our duty to those who have trusted us. Wait, I implore you. Don't do this!"

"I will. I have a duty to you which is greater than my duty to them. Dr. Hartmann!" she screamed. "I will tell everything—everything." She collapsed against the wall and sobbed as though her heart would break.

In a few moments they heard Hartmann and Mayer descending the steps, and the door was thrown open.

"Ah, so you have come to your senses, have you?" the doctor cried. "Well, what have you to say?"

Grace raised her head. "If I tell you where the ivory snuff box is hidden," she said, "will you let my husband go?"

"Yes. Your husband, and yourself, and the rat we've just caught sneaking around outside. He's up in the laboratory now. You can all take yourselves off as quickly as you like, when once the snuff box is in my hands. Now speak."

"First, let my husband up."

Hartmann went to the wall, and switching off the violet rays, turned on the electric lamp, then nodded to Mayer. "Unbind him," he said.

Duvall staggered to his feet, half-blinded. As he did so, Hartmann turned to Grace. "Speak!" he commanded. "We are wasting time."

Before Grace could reply, Duvall turned to her.

"I forbid you," he cried. "If you do this thing, I will never see you again as long as I live. You are destroying my honor. I refuse to let you do it. Stop!"

The girl hesitated, and Hartmann swore a great oath. "Take her out of here, Mayer," he cried. "She'll never speak, as long as her husband is present to dissuade her. Up with her to the laboratory. She'll talk there, quick enough."

"No!" Duvall staggered toward her. "You shall not." His movements were slow and uncertain, due to the blinding pain in his eyes, and his stiffened, nerve-racked limbs. Hartmann pushed him aside angrily. "Be quiet," he growled. "Let the woman alone."

Meanwhile Hartmann's companion had torn away the strap which bound Grace to the wall and was leading her to the door. Her husband's efforts to detain her, weak and uncertain, were easily frustrated by Hartmann. In a few moments the door had swung shut upon the detective, and she was being led up the steps to the room above.

Here she fell into a chair, and looking about, saw huddled on a couch in the far corner of the room a little, bent old man, who sat with his white head bowed upon his breast, his hands tied behind his back. Hartmann went over to him and unfastened his bonds. "You will be happier in a moment, my friend," he laughed. "This lady is going to set you free."

Dufrenne—for it was he—sprang to his feet. "How?" he demanded. "How?" As he spoke, he crossed the room, his eyes gleaming, and faced Grace as she sat in the chair.

"Wait and see, old man," said Hartmann, roughly. "Stand aside, please." He pushed Dufrenne impatiently away. "Now, young woman, where is the ivory snuff box?"

Grace raised her head to reply, when the little old Frenchman turned to her, pale with anger. "No!" he shouted, starting forward. "You shall not do this thing. Would you be a traitor to France!"

Grace looked at him and shuddered. His face was quivering with emotion—his eyes burned with piercing brightness, he seemed about to spring at her, in his rage. In a moment Hartmann had turned on him. "Be quiet!" he roared. "I want no interference from you. Mayer!" He pointed a trembling forefinger at the old Frenchman. "Take this fellow away."

Mayer took Dufrenne by the arm and twisted it cruelly. "No nonsense, now!" he growled, thrusting the old man toward the couch upon which he had been sitting. "Hold your tongue, or it will be worse for you." Dufrenne resisted him as best he could, but his age and feebleness rendered him helpless. He sank upon the couch, with tears of anger starting to his eyes.

Grace dared not look at him. The enormity of the thing she was about to do appalled her. Yet there was Richard, her husband; Richard, whom she loved with all her soul, in the room below, facing madness, death. The love she felt for him overmastered all other considerations. She turned to Hartmann with quivering face. "The box is in the room below," she cried, in a voice shaking with emotion.

"Mon Dieu—mon Dieu!" she heard Dufrenne gasp, as he started from the couch. "You have ruined us all."

Hartmann and Mayer gazed at each other incredulously. "Impossible!" the former gasped. "Impossible!" Then he turned to Grace. "Girl, are you telling me the truth?"

She nodded, bowing her head upon her hands. She could not trust herself to speak.

"Where? Where in that room could it be hidden? Tell me!" he shook her angrily by the arm. "Haven't we wasted enough time over this thing?"

Still she made no reply. Now that she had told them, a sudden revulsion swept over her. She hated herself for what she had done, hated Hartmann, hated Monsieur Lefevre for placing her in this cruel situation.

Hartmann dragged her roughly to her feet. "If the box is in the room below, come with me and find it."

He hurried her toward the staircase. "Come along, Mayer," he called over his shoulder. "Bring that fellow with you. It won't be safe to leave him." As she descended the steps, Grace heard the other two close behind her. The Frenchman staggered along like a man in a daze, offering no resistance.

When they burst into the room in which Duvall was confined, they found the latter standing beneath the electric lamp, a look of determination upon his face. He regarded them steadily, in spite of his reddened and burning eyes.

Hartmann paid little attention to him. He was too greatly interested in the movements of Grace. "Now," he said, "where is it? You say the snuff box is here—in this room. Find it."

She hesitated, looking at her husband pitifully. What would he think of her? Would he, too, regard her as a traitor, a weak and contemptible creature, forever barred from love and respect, false to her duty, her honor? His face told her nothing. He was regarding her impassively. She remembered now that he had said that he would never see her again if she disobeyed him. Then she turned away, her mind made up. She would save him, come what might. He had told her that the box was hidden in an opera hat, in one corner of the room. She glanced about quickly, trying to discover its whereabouts in one of the dark corners.

Duvall saw her intention. He took a step forward, and addressed Hartmann. "You have forced this girl, through her love for me, to betray a great trust. I prefer that, if anyone here is to become a traitor, it shall be myself." He thrust his hand into the pocket of his coat, and extended a round white object toward the astonished doctor. "Here is the snuff box."

Dufrenne, for the moment left unguarded by Mayer, sprang forward with a fierce cry. "No—no—no!" he screamed. "You shall not—you shall not."

"Out of my way!" exclaimed the doctor, brushing the old man aside as easily as though the latter had been a child. With eager hands he took the box, and going to the light, bent over it. As he saw the pearls, the cross, his face lit up with delight. "This is it, Mayer. Just as the valet described it." He gave the ring of pearls a swift turn, then pressed immediately upon the larger one of the circle and slid the top of the ivory cross to one side. Duvall, who was watching him with interest, concluded that from some source, probably through Monsieur de Grissac's dead servant, Dr. Hartmann had learned thoroughly the secret of the box.

With a cry of satisfaction the latter drew out from the tiny recess the slip of folded paper, glanced at the row of numbers written upon it, then passed it over to Mayer. The latter nodded his head. "Now we are all right," he muttered. "This is easily worth a million francs."

"Money doesn't measure its value, my friend," the doctor remarked, gravely, as he replaced the slip of paper beneath the cross and put the box carefully into his pocket.

During these few moments, Dufrenne had been observing the doctor with bulging eyes. Suddenly he turned on the detective. "May the good God curse you and your woman for this," he cried, hoarsely, "until the day of your death. May He turn all men against you, and make your name a despised and dishonored one forever. You have been false to your duty—false to France. You are a traitor, a contemptible dog of a traitor, and you deserve to die." His whole body shook with passion as he poured the fury of his wrath upon the man before him.

Duvall sank weakly against the packing case behind him. Suffering, lack of sleep and food, the burning pain in his eyes and brain, threatened to overcome him. "Let me alone," he gasped. "I am so tired, so very tired!" He almost fell as he uttered the words and indeed would have done so had Grace not gone quickly up to him and passed her arm lovingly about his shoulders. Turning to Dufrenne, she regarded him with a look of defiance. "He is not guilty!" she cried. "It is I—I!—who have been false. I made him do it—I made him do it. Go away, and tell the others what you please. I know that my husband has done his best." She fell to soothing him, kissing him upon his hot forehead, his burning cheeks.

Dufrenne looked at Dr. Hartmann, who was regarding the scene before him with impatience. "Do I understand, monsieur," he asked, in a ghastly voice, "that I am free to leave this place?"

"Yes. Out with you. I could hold you for trespass upon my grounds, for attempting to break into my house, but I don't want to be bothered with you. Go!" He went to the door and held it open. "Mayer," he said, "show this fellow the road. And as for you"—he turned to Duvall and his wife—"get away from here, and from Brussels, as soon as you like. I advise you not to stay in the town. I rather think that, through the evidence of Seltz, I can make it slightly uncomfortable for you. Tell what story you please. I have done you no injury. You came here of your own free will—you could have escaped and you would not. As for the light—" He laughed harshly. "An ordinary arc, focused on your eyes with a powerful lens. It would probably have blinded you, in time, and if it kept you awake long enough, you would no doubt have gone mad, but so far you are not hurt much. I can swear that it is part of my new treatment for a disordered mental state. My man here will agree with me. What are you going to do about it? How are you going to explain your robbery of Seltz in my office, the deception your wife has practised upon me and upon the United States Minister? And above all, now that I have the secret I desired, I am quite willing to have a cast made of the snuff box and return it to you, but I fancy that neither Monsieur de Grissac nor my friend Lefevre will want to have the matter made public in the courts. You'd better leave here quietly and take the first steamer to America. I don't fancy you'll find a very flattering reception awaiting you in Paris." He turned to the door. "Come, I'll have your belongings put on a cab, and be glad to be rid of you." He paused beside the doorway, waiting.

Grace turned to her husband. "Come, Richard," she said. "Let us go."

He made no reply, but followed her blindly. His spirits seemed broken, he walked like a man in a heavy sleep.

It was just dawn when, half an hour later, Richard Duvall and his wife drove silently through the ghostly streets of Brussels toward the railway station. The detective did not speak. He sat silent, plunged in a deep stupor. Grace, her heart breaking, held one of his hands, and with white face, gazed helplessly out of the window at the city, just waking to another day. To all these people the dawn came with some measure of hope, of happiness, but to her, and to her husband, now once more beginning their honeymoon, the future seemed full of bitterness and despair. She shivered in the cold morning air, and the tears she could not repress stole unheeded down her cheeks.

It was not until they had reached the railway station that Richard Duvall roused himself from the stupor in which he had sat ever since he and his wife had driven away from Dr. Hartmann's. When their baggage had been deposited on the platform, under the care of a solicitous porter, and the cabman had been paid and gone his way, Grace asked her husband concerning their destination. "Shall we go to Antwerp?" she said, listlessly. "We can get a steamer there, or cross to England." She awaited his reply without interest. It seemed to matter very little where they went, now.

Duvall turned to the waiting porter. "When is the next train for Paris?" he asked. The man answered at once, glancing at the clock in the waiting-room. "In forty minutes, monsieur. You will have time for rolls and coffee."

"Paris!" exclaimed Grace, in much surprise. "Why should we go to Paris, dear? I don't care about the things I left there. We can telegraph for them. Oh, Richard, I can't go back and face Monsieur Lefevre now." She looked eagerly at his face, but its expression told her nothing. "I must make my report to the Prefect," he answered. "It is my duty."

Over their simple breakfast he was uncommunicative. "Don't worry, dear," he said, once, when she had plied him with questions, attempted to change his decision by arguments. "I cannot afford to run away. Monsieur Lefevre has given me a duty to perform, and I must at least tell my story. After that, we can go to America, but not now."

She could get no more out of him, and with tears in her eyes, followed him to the compartment in the Paris train which the porter had secured for them. There were few people traveling at this early hour. They had the compartment to themselves. Duvall rolled himself in his overcoat and lay down upon one of the seats. "I am very tired, dear," he told her. "I have suffered a frightful strain. My eyes hurt so that I can scarcely see. I am sick for want of sleep. There is a hard task before me, when I get to Paris. I must have a little rest." He turned his face away from the light, and lay quiet, breathing heavily.

Grace sat huddled up in a corner of the opposite seat, watching him, a great tenderness in her eyes. After all, she thought, he was her husband, the man she loved, and if he had appeared to act the part of a traitor to his cause, it was only because she, by her weakness, her love for him, had forced him to do so. At the last moment he had thought of her—his one thought had been to save her from disgrace and dishonor. He had assumed the blame, for he had given up the snuff box of his own free will. Had he allowed her to do so, he could have preserved his own name, his own honor, clear of all accusation or stain. It made her love him doubly, that he had thus stepped into the breach at the last moment and taken upon himself the guilt which she knew belonged in reality upon her.

As she sat there, conscious only of the flying trees outside the car windows, the clicking of the wheels upon the rails, and the low breathing of her husband on the seat before her, her mind went forward into the future, and the prospect made her shudder. In Paris she knew what manner of welcome awaited them. Monsieur Lefevre would turn from them both, as he would not turn from the vilest criminal.

Their names would be held up to scorn, in official circles at least. If the public ever came to know of the affair, she knew they would have reason to fear for their very safety.

As to the results of her act, as to what the secret of the lost snuff box was, that made Hartmann declare its value to be priceless, she could not even guess. That it must have some diplomatic, some international significance, she fully believed, else why should Monsieur Lefevre have declared that the honor of France was involved? And if so—if the possession of the secret by Hartmann, and thus by the foreign country, whichever one it might be, of which he was probably an agent, did result in complications of a vast and terrible nature, involving possibly war, or loss of national honor and prestige, how could either she or her husband ever again hope to hold up their heads, to find any joy and happiness in life?

Of course, there was America, and home, but even there the secret would in time become known, and Richard would find that those who had been his friends in high places would turn from him, trusting in his honor, his integrity, no longer. Even, she realized, if the affair did not become known, at home, it would stand forever between them, a black and grinning shadow, destroying confidence, happiness, even love itself. She had failed him—failed her husband—done what he had forbidden her to do, and he had sworn to leave her, to turn from her forever, if she disobeyed him. Would he do this, she wondered? Or would he understand that what she had done, had been for his sake, for the sake of her love for him?

Presently she realized that the train was slackening its speed, and the houses which began to appear in increasing numbers outside the car windows told her that they were approaching a station. She looked at her railway folder and then consulted her watch. It was Manbenge, the point at which they left Belgium and entered France. The train drew noisily into the station, and was at once surrounded by the usual crowd of passengers, porters, railway and customs officials, and the like. Grace watched them idly, indifferently. Her only concern was that they should not wake her husband with their noisy chatter.

Presently she saw a small, white-haired figure approaching the compartment door. At first she paid no attention to the man, supposing him to be a belated passenger. Then she was struck with a sudden familiarity in his appearance. She started back in alarm as she saw that it was Dufrenne, and that he was making straight for the compartment in which she sat, his face stern and angry. Behind him she observed two gendarmes, walking with their characteristic jerky stride.

Dufrenne had been a mystery to her. Until their meeting in Dr. Hartmann's laboratory that morning, she had never seen him. She had felt, from his words, that he, too, was of Monsieur Lefevre's staff, a member of the secret police, but that he was no friend of Richard's or of hers, she very well knew. She drew back further into the dim corner of the compartment, hoping that he would not recognize her.

Her hopes, however, were in vain. Dufrenne threw open the door of the carriage, which had previously been unlocked by the guard, and followed by his men, entered the compartment. "Here is the fellow," he cried, angrily, pointing to Duvall. "Arrest him."

Grace sprang forward, and stood between the men and her husband, who slept on, unconscious of the noise about him. "No—no!" she cried, in a tense whisper. "Let him alone. You shall not touch him." In her desperation she drew from the bosom of her dress a small revolver which she had carried ever since she left Paris. "Keep away, I tell you. You shall not arrest my husband."

Dufrenne confronted her with an angry gesture. "You fool!" he cried. "Do you dare to disobey this?" He held before her eyes a silver ring, inlaid with gold, similar to the one she wore about her own neck. "I am a member of the secret police, as you know. This man is a traitor to his duty, and for that he shall be punished. Arrest him," he said again to his men.

Grace recoiled, and dropped the revolver she held to the floor. In all her dread of the future, this was something upon which she had not counted. Her husband arrested—possibly shot, or condemned to spend years in some frightful military prison. She thought of Devil's Island, where Dreyfus had been confined, and the horror of the situation overcame her. Unable to resist longer, she sank upon the seat and burst into tears.

The two gendarmes awakened Duvall roughly, and after informing him that he was a prisoner, sat grimly down on either side of him. Dufrenne took the seat beside Grace. The train had again begun to move—she realized that they were once more flying toward Paris.

At first Duvall, in his stupor of sleep, did not realize what had happened, but in a few moments he had grasped the situation. He did not seem greatly concerned at his arrest, and Grace, her first paroxysm of weeping having passed, looked at him in surprise. How brave he is! she thought. Once she caught his eyes, but he made no sign. Apparently he was resigned to his fate.

Dufrenne turned to her presently. "You, madame, are also under arrest," he remarked coldly.

"You have no right to do this thing," she exclaimed. "We have done the best we could."

"No!" cried the little old Frenchman, his bent shoulders straightening, his eyes flashing until he became a stern and vengeful figure. "No! You have not done the best you could. Brave men—and brave women, die at their posts of duty. You are cowards, both of you. Had I been in your place, do you think I would have given in—do you think I would have sold the honor of my country! Mon Dieu! It is incredible! I am a Frenchman, madame, and I have fought for France. I value my life as nothing, where her welfare is concerned. I would have died a thousand times, died as Frenchmen die, with 'Vive La France,' on my lips, before I would have uttered so much as a single word."

She made no reply to this. In his anger, the fragile old man seemed inspired with the very spirit of patriotism, his withered cheeks took on new color, his sunken eyes a new brightness. She felt ashamed—not for Richard, for he had spoken only when she had forced him to do so, but for herself. The guilt was hers. She was glad that she, too, was arrested, that she might have a chance to go before Monsieur Lefevre and take upon her shoulders the dishonor which she knew belonged there. Silent, she shrank back into her corner, not daring to look up.

"Monsieur Dufrenne," she heard Richard saying, quietly, "be so good as to remember that it was I, not my wife, who gave the snuff box to Hartmann. You have seen fit to place me under arrest. Very well, I will tell my story to Monsieur Lefevre and abide by his decision. But meanwhile, I beg that you will treat my wife with courtesy and respect. She has had a very trying and terrible experience and I do not wonder that she is unnerved. You may not know it, monsieur, but we were married but five days ago, and this—" he glanced about the compartment with a sad smile—"this, monsieur, is our honeymoon."

The Frenchman sank back, all his anger swept away. "It is pitiful, monsieur, pitiful," he said, quietly. "Yet in what I now do, I am but doing my duty." He turned to Grace. "Madame, I feel for you in your suffering. You acted through love. Of that I am sure. But there is a greater love than that of woman for man—the love of country. That is the only love I understand." He turned away and sat for a long while gazing out of the window.

In what seemed to Grace a very short time, they reached Paris, and here she and Richard were conducted to a taxicab and soon found themselves at the Prefecture.

Dufrenne left them, to announce his arrival to Monsieur Lefevre, and she and her husband sat in an anteroom, closely guarded, waiting until the time should arrive for them to be summoned before the Prefect.

The detective was still silent and preoccupied. He said little, but from the caressing way in which he placed his hand upon hers, bidding her cheer up, Grace knew that his love for her, at least, was left to her. "Oh, Richard," she said, softly, turning her face to his, "I am so sorry, so sorry! But I could not let you suffer, dear, for I love you—I love you."

It was characteristic of Monsieur Etiènne Lefevre, Prefect of Police of Paris, that when he had once placed a case in the hands of one of his men, he rarely ever interfered in any way with the latter's conduct of it. Reports of progress he did not desire, nor encourage. Success was the only report that he asked, and by thus throwing his subordinates upon their own responsibility, he obtained from them far better results than would have been the case had he kept in constant touch with their movements.

Hence when he dispatched Richard Duvall, and Monsieur Dufrenne, the little curio dealer of the Rue de Richelieu, to London, and the former's wife and later on Lablanche to Brussels, he felt that he had done all that it was possible to do, to secure the recovery of Monsieur de Grissac's stolen snuff box.

He did not, it is true, dismiss the matter from his mind—it was, indeed, of too grave and sinister a character to be treated thus lightly, but he had the utmost confidence in Duvall, and believed that the latter would without doubt succeed in his quest.

Since Duvall's departure, he had waited anxiously for the detective's appearance. He did not expect to hear from him, but felt convinced that within the next day or two he would walk into his office with the missing snuff box in his pocket.

It was with some dismay, therefore, that he received, on the fourth day, a sudden visit from Dufrenne. The latter had been released, the day before, by the Brussels police, after a most uncomfortable night in a cell, an experience for which he knew he had Hartmann to thank, and in desperation had decided to place the condition of affairs before his chief.

The latter had heard him in silence, and then followed a long conference, with the result that Dufrenne returned to Brussels, bearing the mysterious message subsequently given to Grace by Lablanche, to play The Rosary upon the phonograph.

Since then, the Prefect had been in a state of profound agitation, although he carefully concealed the fact from his subordinates. The gravity of the issues at stake tortured him ceaselessly, and to add to his discomfort, Monsieur de Grissac arrived from London, determined to ascertain what progress, if any, had been made toward the recovery of his lost property.

He was bitterly disappointed to find that Lefevre was unable to give him the slightest encouragement. The box had not, he believed, passed into the hands of their enemies, but beyond that he could say nothing.

It was on the day of the Ambassador's arrival that Dufrenne appeared at the Prefecture a second time, his face pale and haggard, his eyes bloodshot and sunken from loss of sleep, his whole manner indicating that he had lately passed through some terrible experience. De Grissac was closeted with the Prefect at the time, but the man's appearance, his urgent request that he see Monsieur Lefevre at once, gained him an immediate audience.

The Prefect and the Ambassador stood awaiting his entrance, their faces tense with anxiety. The expression upon the old man's countenance confirmed their worst fears. He staggered into the room, grasping the back of a chair to support himself. "He has given it up—the scoundrel—the traitor; he has given it up, to save himself and his wife."

The Ambassador turned away with a groan of despair. Lefevre stepped up to Dufrenne. "You mean to tell me," he cried, "that Richard Duvall has proven false to his duty? I cannot believe it."

Dufrenne nodded. "He gave it to Hartmann last night. I saw him do it. Hartmann had promised to let him go free. They had been torturing him, in some way, I do not know how. It was the woman who weakened first. The man—Duvall—gave up the box to save her from doing so."

"Then she knew where it was?"

"Yes."

The Prefect went over to the window and looked out over the Seine. His emotions almost overcame him. The loss of the box—Duvall's faithlessness—his own failure, all plunged him into the deepest despair. "Mon Dieu!" he muttered to himself. "Duvall—it is incredible!"

Suddenly he turned. The Ambassador had begun to question Dufrenne. "What did this Dr. Hartmann do, when the box was given to him?" he asked in a voice trembling with excitement.

"He pressed the large pearl, pushed aside the cross, and removed the paper that was hidden beneath it. He read the paper. It contained nothing but a row of numbers. I saw it as he held it beneath the light."

De Grissac became as white as chalk, and turning to Lefevre, cried out, in a broken voice, "It is all over. Nothing can be done now. It is too late. Mon Dieu! What will become of France?"

"Where is Duvall?" cried the Prefect, suddenly. "I must see him. He is not the man to do such a thing as this. I must talk to him. Do not tell me that he has run away."

"No, monsieur. He is outside, he and his wife. I have placed them both under arrest."

"Were they attempting to escape?"

"No, monsieur. They were coming to Paris."

"At least," the Prefect remarked, mournfully, "he is not cowardly enough for that. Bring him here—bring them both here at once. I must question them."

Dufrenne turned to the door. "In a moment, monsieur, they will be before you."

"What can it avail now?" said De Grissac, sadly.

"We shall see. I never condemn a man without a hearing." As he spoke, Duvall and Grace came into the room.

The Prefect looked at his young assistant with an expression both grave and sad. He had always been very fond of Duvall—he was fond of him still. The whole matter had hurt him very deeply.

"Monsieur Duvall," he said, without further preliminaries, "Monsieur Dufrenne tells me that you, after recovering Monsieur de Grissac's snuff box from Dr. Hartmann, deliberately returned it to him last night, in order to secure your liberty and that of your wife. Is this true?"

"Yes." Duvall's voice was calm, even, emotionless. "It is true."

Lefevre recoiled as though he had received a blow. "Can you dare to come before me, and tell me such a thing as that?"

"It was my fault, Monsieur Lefevre," cried Grace, going up to him. "Richard begged me not to tell—commanded me not to tell, but they were torturing him—they were driving him mad. Oh, I could not stand it—I could not!"

"You should have considered your duty, madame, not your husband," remarked the Prefect, coldly, then turned to Duvall.

"Young man," he said, "you have done a terrible thing—perhaps even now, you do not realize how terrible a thing. I regret that I did not inform you at the time I placed the case in your hands, but the matter is one which, at all costs, I wished to have remain a secret. Now it makes little difference. Monsieur de Grissac has for many months been carrying on with the Foreign Office a correspondence regarding the relations of France and England in the matter of Morocco. Many details of action have been settled which, in the event of certain eventualities, would constitute the joint policy of the two nations. I need hardly say that these details and policies are of such a nature as to cause, if known, an immediate declaration of war by the third nation involved. This correspondence, Monsieur de Grissac, unwilling to trust to the ordinary cipher in use for such purposes, carried on in a code of his own; one which he regarded as absolutely proof against all attempts at solution. That desperate attempts to obtain copies of the correspondence would be made he well knew, and in spite of all precautions, our enemies, by bribing a subordinate, did, some time ago, manage to secure copies of many of the most important letters and documents. Their attempts at reading them, however, were fruitless. Without the cipher, and its key, they could do nothing.

"How they ultimately learned that the key and the cipher were contained in the ivory snuff box, we do not know. Perhaps through Noël, the Ambassador's servant, although Monsieur de Grissac is positive that he never, under any circumstances, made use of the cipher in the presence of a third person. That they did learn the whereabouts of the cipher, however, we now realize only too well. When I told you that in the missing snuff box lay not only my honor, but the honor of France, I indulged in no extravagant statements. It is the solemn truth. Even now, by means of the snuff box and key which you have delivered to them, our enemies have no doubt read the stolen documents, and are preparing to strike while we are as yet unprepared." He strode up and down the room in a state of extreme excitement. "As a last desperate chance, I attempted to send you a message by means of the phonograph record. I hoped you might, in this way, learn the secret of the box, and by destroying the key, render it useless. If you hesitated to do this, fearing that, should Hartmann discover the key was missing he would refuse to liberate you, you are worse than a traitor. You are a contemptible coward. Let me tell you, Monsieur Duvall, if I had a son, I should rather have struck him dead at my feet, than have had him fail me in a crisis like this."

Grace began to weep, hysterically. "It was all my fault," she began. "I told them the box was hidden in the room below, against my husband's wishes."

"Where were you, then, that you say 'in the room below?'" asked Lefevre suddenly.

"In the laboratory, on the second floor. My husband was confined in the basement. I said I would tell—for they were killing him. He cried out to me—forbidding me to do so. Then they took me away to the room above."

"And left your husband alone, with the snuff box in his possession?" demanded the Prefect, sternly.

"Yes."

"For how long?"

"About—about ten minutes," she replied, wondering at his question.

"And you," exclaimed the Prefect, in a voice of fury, turning on Duvall, "were left alone in this room, with the snuff box in your possession, for ten minutes, at the end of which time you calmly turned it over to this fellow Hartmann. Mon Dieu! Why did you not destroy it—crush it under your heel—anything, to prevent our enemies from obtaining possession of it?" He looked at Duvall, his face working convulsively. "You—you are a—sacré bleu!—I cannot tell you what I think of you."

"Monsieur de Grissac," asked Duvall, his face white, "had I destroyed the box, or even only the key, could you have read these documents yourself?"

The Ambassador gazed at him, puzzled for a moment. "Certainly not, monsieur," he replied. "I could no more have solved the cipher than they could. It was for that reason that I was forced to carry the key about with me. But it would have been infinitely better, had the documents never again been read, than to have them read by our enemies."

Without making any reply, Duvall placed his hand in his pocket and drew out, between his thumb and forefinger, a tiny white pellet, no larger than the head of a match. "You are no doubt acquainted, Monsieur de Grissac," he said, coolly, "with your own handwriting."

"My handwriting! Naturally. What of it?" He went toward the detective, an eager look in his face. Lefevre, Dufrenne, and Grace also crowded about, their expressions showing the interest which Duvall's questions had aroused.

The detective began to unroll the little white pellet with the utmost deliberation. It presently became a tiny strip of tissue paper, not over two and a half inches long, upon which was written a series of numbers. "Is that, then, your handwriting, monsieur?" he inquired carelessly, as he placed the strip of paper in De Grissac's trembling hand.

"Mon Dieu! The key!" fairly shouted the Ambassador, as his eyes fell upon the bit of paper. "Monsieur Duvall, what does this mean?"

"It means, monsieur," replied the detective, coolly, "that while I was left alone in the room downstairs, I tore off the lower half of your key, which luckily, was a sufficient width to enable me to do so, and with a fountain pen I had in my pocket, wrote upon this second slip of paper a series of numbers taken at random. This series I placed in the secret recess in the box. I do not think it will prove of much use to our friends in Brussels."

"Duvall!" cried Lefevre, rushing forward with outstretched hands. "Forgive me—forgive me!" He was not quick enough, however, to forestall Grace, who with one cry of happiness had flung herself into her husband's arms. "Richard!" she cried, and then sank sobbing but happy upon his breast.

Monsieur Lefevre seized his assistant by the arm and began to shake his hand in a way which almost threatened to dislocate the young man's shoulder. "My boy," he cried, laughing and crying at the same time, "forgive me—forgive me. I was hasty. I should have let you speak, first. God be praised, everything is well. De Grissac—think of it—they will puzzle their brains over that cipher for weeks and weeks and they will discover nothing—nothing! Is it not splendid!" He grasped the Ambassador's hand and embraced him with ardor. "Magnificent! Superb!"

The Ambassador was no less overjoyed. "Young man," he said, "we owe you the deepest apologies. No one could have done better. I thank you from the bottom of my heart." Dufrenne also offered his congratulations. "My friend," he said, "I have done you a great injustice. I salute you, not only as a brave man, but as a very shrewd one. As for me, I fear I am only an old fool."

Duvall patted the old man on the shoulder and smiled. "A patriot, monsieur, and for that I honor you. I was luckily able to turn the tables on these fellows. But one thing you, and all of you, gentlemen, should know. Had I not been able to substitute a false key for the real one, the latter would never have passed into Hartmann's hands, if I had died for it."

"I know it, my friend. I was a fool, a dolt, even for one moment to doubt it. I ask your pardon, and that of madame, your wife," cried Lefevre, seizing Duvall's hands in his. Grace looked proudly at her husband, her knowledge of her own weakness forgotten in the triumph that he had won.