"What man?"

"Marie Fauville's accomplice."

"But you don't know—"

"The address? Why, you gave it to me yourself: Boulevard Richard-Wallace, No. 8. Go! And don't look such a fool."

He made him spin round on his heels, took him by the shoulders, pushed him to the door, and handed him over, quite flabbergasted, to a footman.

He himself went out a few minutes later, dragging in his wake the detectives attached to his person, left them posted on sentry duty outside a block of flats with a double entrance, and took a motor cab to Neuilly.

He went along the Avenue de Madrid on foot and turned down the Boulevard Richard-Wallace, opposite the Bois de Boulogne. Mazeroux was waiting for him in front of a small three-storied house standing at the back of a courtyard contained within the very high walls of the adjoining property.

"Is this number eight?"

"Yes, Chief, but tell me how—"

"One moment, old chap; give me time to recover my breath."

He gave two or three great gasps.

"Lord, how good it is to be up and doing!" he said. "Upon my word, I was getting rusty. And what a pleasure to pursue those scoundrels! So you want me to tell you?"

He passed his arm through the sergeant's.

"Listen, Alexandre, and profit by my words. Remember this: when a person is choosing initials for his address at a poste restante he doesn't pick them at random, but always in such a way that the letters convey a meaning to the person corresponding with him, a meaning which will enable that other person easily to remember the address."

"And in this case?"

"In this case, Mazeroux, a man like myself, who knows Neuilly and the neighbourhood of the Bois, is at once struck by those three letters, 'B.R.W,' and especially by the 'W.', a foreign letter, an English letter. So that in my mind's eye, instantly, as in a flash, I saw the three letters in their logical place as initials at the head of the words for which they stand. I saw the 'B' of 'boulevard,' and the 'R' and the English 'W' of Richard-Wallace. And so I came to the Boulevard Richard-Wallace, And that, my dear sir, explains the milk in the cocoanut."

Mazeroux seemed a little doubtful.

"And what do you think, Chief?"

"I think nothing. I am looking about. I am building up a theory on the first basis that offers a probable theory. And I say to myself ... I say to myself ... I say to myself, Mazeroux, that this is a devilish mysterious little hole and that this house—Hush! Listen—"

He pushed Mazeroux into a dark corner. They had heard a noise, the slamming of a door.

Footsteps crossed the courtyard in front of the house. The lock of the outer gate grated. Some one appeared, and the light of a street lamp fell full on his face.

"Dash it all," muttered Mazeroux, "it's he!"

"I believe you're right."

"It's he. Chief. Look at the black stick and the bright handle. And did you see the eyeglasses—and the beard? What a oner you are, Chief!"

"Calm yourself and let's go after him."

The man had crossed the Boulevard Richard-Wallace and was turning into the Boulevard Maillot. He was walking pretty fast, with his head up, gayly twirling his stick. He lit a cigarette.

At the end of the Boulevard Maillot, the man passed the octroi and entered Paris. The railway station of the outer circle was close by. He went to it and, still followed by the others, stepped into a train that took them to Auteuil.

"That's funny," said Mazeroux. "He's doing exactly what he did a fortnight ago. This is where he was seen."

The man now went along the fortifications. In a quarter of an hour he reached the Boulevard Suchet and almost immediately afterward the house in which M. Fauville and his son had been murdered.

He climbed the fortifications opposite the house and stayed there for some minutes, motionless, with his face to the front of the house. Then continuing his road he went to La Muette and plunged into the dusk of the Bois de Boulogne.

"To work and boldly!" said Don Luis, quickening his pace.

Mazeroux stopped him.

"What do you mean, Chief?"

"Well, catch him by the throat! There are two of us; we couldn't hope for a better moment."

"What! Why, it's impossible!"

"Impossible? Are you afraid? Very well, I'll do it by myself."

"Look here, Chief, you're not serious!"

"Why shouldn't I be serious?"

"Because one can't arrest a man without a reason."

"Without a reason? A scoundrel like this? A murderer? What more do you want?"

"In the absence of compulsion, of catching him in the act, I want something that I haven't got."

"What's that?"

"A warrant. I haven't a warrant."

Mazeroux's accent was so full of conviction, and the answer struck Don Luis Perenna as so comical, that he burst out laughing.

"You have no warrant? Poor little chap! Well, I'll soon show you if I need a warrant!"

"You'll show me nothing," cried Mazeroux, hanging on to his companion's arm. "You shan't touch the man."

"One would think he was your mother!"

"Come, Chief."

"But, you stick-in-the-mud of an honest man," shouted Don Luis, angrily, "if we let this opportunity slip shall we ever find another?"

"Easily. He's going home. I'll inform the commissary of police. He will telephone to headquarters; and to-morrow morning—"

"And suppose the bird has flown?"

"I have no warrant."

"Do you want me to sign you one, idiot?"

But Don Luis mastered his rage. He felt that all his arguments would be shattered to pieces against the sergeant's obstinacy, and that, if necessary, Mazeroux would go to the length of defending the enemy against him. He simply said in a sententious tone:

"One ass and you make a pair of asses; and there are as many asses as there are people who try to do police work with bits of paper, signatures, warrants, and other gammon. Police work, my lad, is done with one's fists. When you come upon the enemy, hit him. Otherwise, you stand a chance of hitting the air. With that, good-night. I'm going to bed. Telephone to me when the job is done."

He went home, furious, sick of an adventure in which he had not had elbow room, and in which he had had to submit to the will, or, rather, to the weakness of others.

But next morning when he woke up his longing to see the police lay hold of the man with the ebony stick, and especially the feeling that his assistance would be of use, impelled him to dress as quickly as he could.

"If I don't come to the rescue," he thought, "they'll let themselves be done in the eye. They're not equal to a contest of this kind."

Just then Mazeroux rang up and asked to speak to him. He rushed to a little telephone box which his predecessor had fitted up on the first floor, in a dark recess that communicated only with his study, and switched on the electric light.

"Is that you, Alexandre?"

"Yes, Chief. I'm speaking from a wine shop near the house on the Boulevard Richard-Wallace."

"What about our man?"

"The bird's still in the nest. But we're only just in time."

"Really?"

"Yes, he's packed his trunk. He's going away this morning."

"How do they know?"

"Through the woman who manages for him. She's just come to the house and will let us in."

"Does he live alone?"

"Yes, the woman cooks his meals and goes away in the evening. No one ever calls except a veiled lady who has paid him three visits since he's been here. The housekeeper was not able to see what she was like. As for him, she says he's a scholar, who spends his time reading and working."

"And have you a warrant?"

"Yes, we're going to use it."

"I'll come at once."

"You can't! We've got Weber at our head. Oh, by the way, have you heard the news about Mme. Fauville?"

"About Mme. Fauville?"

"Yes, she tried to commit suicide last night."

"What! Tried to commit suicide!"

Perenna had uttered an exclamation of astonishment and was very much surprised to hear, almost at the same time, another cry, like an echo, at his elbow. Without letting go the receiver, he turned round and saw that Mlle. Levasseur was in the study a few yards away from him, standing with a distorted and livid face. Their eyes met. He was on the point of speaking to her, but she moved away, without leaving the room, however.

"What the devil was she listening for?" Don Luis wondered. "And why that look of dismay?"

Meanwhile, Mazeroux continued:

"She said, you know, that she would try to kill herself. But it must have taken a goodish amount of pluck."

"But how did she do it?" Perenna asked.

"I'll tell you another time. They're calling me. Whatever you do, Chief, don't come."

"Yes," he replied, firmly, "I'm coming. After all, the least I can do is to be in at the death, seeing that it was I who found the scent. But don't be afraid. I shall keep in the background."

"Then hurry, Chief. We're delivering the attack in ten minutes."

"I'll be with you before that."

He quickly hung up the receiver and turned on his heel to leave the telephone box. The next moment he had flung himself against the farther wall. Just as he was about to pass out he had heard something click above his head and he but barely had the time to leap back and escape being struck by an iron curtain which fell in front of him with a terrible thud.

Another second and the huge mass would have crushed him. He could feel it whizzing by his head. And he had never before experienced the anguish of danger so intensely.

After a moment of genuine fright, in which he stood as though petrified, with his brain in a whirl, he recovered his coolness and threw himself upon the obstacle. But it at once appeared to him that the obstacle was unsurmountable.

It was a heavy metal panel, not made of plates or lathes fastened one to the other, but formed of a solid slab, massive, firm, and strong, and covered with the sheen of time darkened here and there with patches of rust. On either side and at the top and bottom the edges of the panel fitted in a narrow groove which covered them hermetically.

He was a prisoner. In a sudden fit of rage he banged at the metal with his fists. He remembered that Mlle. Levasseur was in the study. If she had not yet left the room—and surely she could not have left it when the thing happened—she would hear the noise. She was bound to hear it. She would be sure to come back, give the alarm, and rescue him.

He listened. He shouted. No reply. His voice died away against the walls and ceiling of the box in which he was shut up, and he felt that the whole house—drawing-rooms, staircases, and passages—remained deaf to his appeal.

And yet ... and yet ... Mlle. Levasseur—

"What does it mean?" he muttered. "What can it all mean?"

And motionless now and silent, he thought once more of the girl's strange attitude, of her distraught face, of her haggard eyes. And he also began to wonder what accident had released the mechanism which had hurled the formidable iron curtain upon him, craftily and ruthlessly.



CHAPTER SIX

THE MAN WITH THE EBONY WALKING-STICK

A group consisting of Deputy Chief Detective Weber, Chief Inspector Ancenis, Sergeant Mazeroux, three inspectors, and the Neuilly commissary of police stood outside the gate of No. 8 Boulevard Richard-Wallace.

Mazeroux was watching the Avenue de Madrid, by which Don Luis would have to come, and began to wonder what had happened; for half an hour had passed since they telephoned to each other, and Mazeroux could find no further pretext for delaying the work.

"It's time to make a move," said Weber. "The housekeeper is making signals to us from the window: the joker's dressing."

"Why not nab him when he comes out?" objected Mazeroux. "We shall capture him in a moment."

"And if he cuts off by another outlet which we don't know of?" said the deputy chief. "You have to be careful with these beggars. No, let's beard him in his den. It's more certain."

"Still—"

"What's the matter with you, Mazeroux?" asked the deputy chief, taking him on one side. "Don't you see that our men are getting restive? They're afraid of this sportsman. There's only one way, which is to set them on him as if he were a wild beast. Besides, the business must be finished by the time the Prefect comes,"

"Is he coming?"

"Yes. He wants to see things for himself. The whole affair interests him enormously. So, forward! Are you ready, men? I'm going to ring."

The bell sounded; and the housekeeper at once came and half opened the gate.

Although the orders were to observe great quiet, so as not to alarm the enemy too soon, the fear which he inspired was so intense that there was a general rush; and all the detectives crowded into the courtyard, ready for the fight. But a window opened and some one cried from the second floor:

"What's happening?"

The deputy chief did not reply. Two detectives, the chief inspector, the commissary, and himself entered the house, while the others remained in the courtyard and made any attempt at flight impossible.

The meeting took place on the first floor. The man had come down, fully dressed, with his hat on his head; and the deputy chief roared:

"Stop! Hands up! Are you Hubert Lautier?"

The man seemed disconcerted. Five revolvers were levelled at him. And yet no sign of fear showed in his face; and he simply said:

"What do you want, Monsieur? What are you here for?"

"We are here in the name of the law, with a warrant for your arrest."

"A warrant for my arrest?"

"A warrant for the arrest of Hubert Lautier, residing at 8 Boulevard Richard-Wallace."

"But it's absurd!" said the man. "It's incredible! What does it mean? What for?"

They took him by both arms, without his offering the least resistance, pushed him into a fairly large room containing no furniture but three rush-bottomed chairs, an armchair, and a table covered with big books.

"There," said the deputy chief. "Don't stir. If you attempt to move, so much the worse for you."

The man made no protest. While the two detectives held him by the collar, he seemed to be reflecting, as though he were trying to understand the secret causes of an arrest for which he was totally unprepared. He had an intelligent face, a reddish-brown beard, and a pair of blue-gray eyes which now and again showed a certain hardness of expression behind his glasses. His broad shoulders and powerful neck pointed to physical strength.

"Shall we tie his wrists?" Mazeroux asked the deputy chief.

"One second. The Prefect's coming; I can hear him. Have you searched the man's pockets? Any weapons?"

"No."

"No flask, no phial? Nothing suspicious?"

"No, nothing."

M. Desmalions arrived and, while watching the prisoner's face, talked in a low voice with the deputy chief and received the particulars of the arrest.

"This is good business," he said. "We wanted this. Now that both accomplices are in custody, they will have to speak; and everything will be cleared up. So there was no resistance?"

"None at all, Monsieur le Prefet."

"No matter, we will remain on our guard."

The prisoner had not uttered a word, but still wore a thoughtful look, as though trying to understand the inexplicable events of the last few minutes. Nevertheless, when he realized that the newcomer was none other than the Prefect of Police, he raised his head and looked at M. Desmalions, who asked him:

"It is unnecessary to tell you the cause of your arrest, I presume?"

He replied, in a deferential tone:

"Excuse me, Monsieur le Prefet, but I must ask you, on the contrary, to inform me. I have not the least idea of the reason. Your detectives have made a grave mistake which a word, no doubt, will be enough to set right. That word I wish for, I insist upon—"

The Prefect shrugged his shoulders and said:

"You are suspected of taking part in the murder of Fauville, the civil engineer, and his son Edmond."

"Is Hippolyte dead?"

The cry was spontaneous, almost unconscious; a bewildered cry of dismay from a man moved to the depths of his being. And his dismay was supremely strange, his question, trying to make them believe in his ignorance, supremely unexpected.

"Is Hippolyte dead?"

He repeated the question in a hoarse voice, trembling all over as he spoke.

"Is Hippolyte dead? What are you saying? Is it possible that he can be dead? And how? Murdered? Edmond, too?"

The Prefect once more shrugged his shoulders.

"The mere fact of your calling M. Fauville by his Christian name shows that you knew him intimately. And, even if you were not concerned in his murder, it has been mentioned often enough in the newspapers during the last fortnight for you to know of it."

"I never read a newspaper, Monsieur le Prefet."

"What! You mean to tell me—?"

"It may sound improbable, but it is quite true. I lead an industrious life, occupying myself solely with scientific research, in view of a popular work which I am preparing, and I do not take the least part or the least interest in outside things. I defy any one to prove that I have read a newspaper for months and months past. And that is why I am entitled to say that I did not know of Hippolyte Fauville's murder."

"Still, you knew M. Fauville."

"I used to know him, but we quarrelled."

"For what reason?"

"Family affairs."

"Family affairs! Were you related, then?"

"Yes. Hippolyte was my cousin."

"Your cousin! M. Fauville was your cousin! But ... but then ... Come, let us have the rights of the matter. M. Fauville and his wife were the children of two sisters, Elizabeth and Armande Roussel. Those two sisters had been brought up with a first cousin called Victor."

"Yes, Victor Sauverand, whose grandfather was a Roussel. Victor Sauverand married abroad and had two sons. One of them died fifteen years ago; the other is myself."

M. Desmalions gave a start. His excitement was manifest. If that man was telling the truth, if he was really the son of that Victor whose record the police had not yet been able to trace, then, owing to this very fact, since M. Fauville and his son were dead and Mme. Fauville, so to speak, convicted of murder and forfeiting her rights, they had arrested the final heir to Cosmo Mornington. But why, in a moment of madness, had he voluntarily brought this crushing indictment against himself?

He continued:

"My statements seem to surprise you, Monsieur le Prefet. Perhaps they throw a light on the mistake of which I am a victim?"

He expressed himself calmly, with great politeness and in a remarkably well-bred voice; and he did not for a moment seem to suspect that his revelations, on the contrary, were justifying the measures taken against him.

Without replying to the question, the Prefect of Police asked him:

"So your real name is—"

"Gaston Sauverand."

"Why do you call yourself Hubert Lautier?"

The man had a second of indecision which did not escape so clear-sighted an observer as M. Desmalions. He swayed from side to side, his eyes flickered and he said:

"That does not concern the police; it concerns no one but myself."

M. Desmalions smiled:

"That is a poor argument. Will you use the same when I ask you why you live in hiding, why you left the Avenue du Roule, where you used to live, without leaving an address behind you, and why you receive your letters at the post-office under initials?"

"Yes, Monsieur le Prefet, those are matters of a private character, which affect only my conscience. You have no right to question me about them."

"That is the exact reply which we are constantly receiving at every moment from your accomplice."

"My accomplice?"

"Yes, Mme. Fauville."

"Mme. Fauville!"

Gaston Sauverand had uttered the same cry as when he heard of the death of the engineer; and his stupefaction seemed even greater, combined as it was with an anguish that distorted his features beyond recognition.

"What?... What?... What do you say? Marie!... No, you don't mean it! It's not true!"

M. Desmalions considered it useless to reply, so absurd and childish was this affectation of knowing nothing about the tragedy on the Boulevard Suchet.

Gaston Sauverand, beside himself, with his eyes starting from his head, muttered:

"Is it true? Is Marie the victim of the same mistake as myself? Perhaps they have arrested her? She, she in prison!"

He raised his clenched fists in a threatening manner against all the unknown enemies by whom he was surrounded, against those who were persecuting him, those who had murdered Hippolyte Fauville and delivered Marie Fauville to the police.

Mazeroux and Chief Inspector Ancenis took hold of him roughly. He made a movement of resistance, as though he intended to thrust back his aggressors. But it was only momentary; and he sank into a chair and covered his face with his hands:

"What a mystery!" he stammered. "I don't understand! I don't understand—"

Weber, who had gone out a few minutes before, returned. M. Desmalions asked:

"Is everything ready?"

"Yes, Monsieur le Prefet, I have had the taxi brought up to the gate beside your car."

"How many of you are there?"

"Eight. Two detectives have just arrived from the commissary's."

"Have you searched the house?"

"Yes. It's almost empty, however. There's nothing but the indispensable articles of furniture and some bundles of papers in the bedroom."

"Very well. Take him away and keep a sharp lookout."

Gaston Sauverand walked off quietly between the deputy chief and Mazeroux. He turned round in the doorway.

"Monsieur le Prefet, as you are making a search, I entreat you to take care of the papers on the table in my bedroom. They are notes that have cost me a great deal of labour in the small hours of the night. Also—"

He hesitated, obviously embarrassed.

"Well?"

"Well, Monsieur le Prefet, I must tell you—something—"

He was looking for his words and seemed to fear the consequences of them at the same time that he uttered them. But he suddenly made up his mind.

"Monsieur le Prefet, there is in this house—somewhere—a packet of letters which I value more than my life. It is possible that those letters, if misinterpreted, will furnish a weapon against me; but no matter. The great thing is that they should be safe. You will see. They include documents of extreme importance. I entrust them to your keeping—to yours alone, Monsieur le Prefet."

"Where are they?"

"The hiding-place is easily found. All you have to do is to go to the garret above my bedroom and press on a nail to the right of the window. It is an apparently useless nail, but it controls a hiding-place outside, under the slates of the roof, along the gutter."

He moved away between the two men. The Prefect called them back.

"One second. Mazeroux, go up to the garret and bring me the letters."

Mazeroux went out and returned in a few minutes. He had been unable to work the spring.

The Prefect ordered Chief Inspector Ancenis to go up with Mazeroux and to take the prisoner, who would show them how to open the hiding-place. He himself remained in the room with Weber, awaiting the result of the search, and began to read the titles of the volumes piled upon the table.

They were scientific books, among which he noticed works on chemistry: "Organic Chemistry" and "Chemistry Considered in Its Relations with Electricity." They were all covered with notes in the margins. He was turning over the pages of one of them, when he seemed to hear shouts.

The Prefect rushed to the door, but had not crossed the threshold when a pistol shot echoed down the staircase and there was a yell of pain.

Immediately after came two more shots, accompanied by cries, the sound of a struggle, and yet another shot.

Tearing upstairs, four steps at a time, with an agility not to be expected from a man of his build, the Prefect of Police, followed by the deputy chief, covered the second flight and came to a third, which was narrower and steeper. When he reached the bend, a man's body, staggering above him, fell into his arms: it was Mazeroux, wounded.

On the stairs lay another body, lifeless, that of Chief Inspector Ancenis.

Above them, in the frame of a small doorway, stood Gaston Sauverand, with a savage look on his face and his arm outstretched. He fired a fifth shot at random. Then, seeing the Prefect of Police, he took deliberate aim.

The Prefect stared at that terrifying barrel levelled at his face and gave himself up for lost. But, at that exact second, a shot was discharged from behind him, Sauverand's weapon fell from his hand before he was able to fire, and the Prefect saw, as in a dream, a man, the man who had saved his life, striding across the chief inspector's body, propping Mazeroux against the wall, and darting ahead, followed by the detectives. He recognized the man: it was Don Luis Perenna.

Don Luis stepped briskly into the garret where Sauverand had retreated, but had time only to catch sight of him standing on the window ledge and leaping into space from the third floor.

"Has he jumped from there?" cried the Prefect, hastening up. "We shall never capture him alive!"

"Neither alive nor dead, Monsieur le Prefet. See, he's picking himself up. There's a providence which looks after that sort. He's making for the gate. He's hardly limping."

"But where are my men?"

"Why, they're all on the staircase, in the house, brought here by the shots, seeing to the wounded—"

"Oh, the demon!" muttered the Prefect. "He's played a masterly game!"

Gaston Sauverand, in fact, was escaping unmolested.

"Stop him! Stop him!" roared M. Desmalions.

There were two motors standing beside the pavement, which is very wide at this spot: the Prefect's own car, and the cab which the deputy chief had provided for the prisoner. The two chauffeurs, sitting on their seats, had noticed nothing of the fight. But they saw Gaston Sauverand's leap into space; and the Prefect's chauffeur, on whose seat a certain number of incriminating articles had been placed, taking out of the heap the first weapon that offered, the ebony walking-stick, bravely rushed at the fugitive.

"Stop him! Stop him!" shouted M. Desmalions.

The encounter took place at the exit from the courtyard. It did not last long. Sauverand flung himself upon his assailant, snatched the stick from him, and broke it across his face. Then, without dropping the handle, he ran away, pursued by the other chauffeur and by three detectives who at last appeared from the house. He had thirty yards' start of the detectives, one of whom fired several shots at him without effect.

When M. Desmalions and Weber went downstairs again, they found the chief inspector lying on the bed in Gaston Sauverand's room on the second floor, gray in the face. He had been hit on the head and was dying. A few minutes later he was dead.

Sergeant Mazeroux, whose wound was only slight, said, while it was being dressed, that Sauverand had taken the chief inspector and himself up to the garret, and that, outside the door, he had dipped his hand quickly into an old satchel hanging on the wall among some servants' wornout aprons and jackets. He drew out a revolver and fired point-blank at the chief inspector, who dropped like a log. When seized by Mazeroux, the murderer released himself and fired three bullets, the third of which hit the sergeant in the shoulder.

And so, in a fight in which the police had a band of experienced detectives at their disposal, while the enemy, a prisoner, seemed to possess not the remotest chance of safety, this enemy, by a strategem of unprecedented daring, had led two of his adversaries aside, disabled both of them, drawn the others into the house and, finding the coast clear, escaped.

M. Desmalions was white with anger and despair. He exclaimed:

"He's tricked us! His letters, his hiding-place, the movable nail, were all shams. Oh, the scoundrel!"

He went down to the ground floor and into the courtyard. On the boulevard he met one of the detectives who had given chase to the murderer and who was returning quite out of breath.

"Well?" he asked anxiously,

"Monsieur le Prefet, he turned down the first street, where there was a motor waiting for him. The engine must have been working, for our man outdistanced us at once."

"But what about my car?"

"You see, Monsieur le Prefet, by the time it was started—"

"Was the motor that picked him up a hired one?"

"Yes, a taxi."

"Then we shall find it. The driver will come of his own accord when he has seen the newspapers."

Weber shook his head.

"Unless the driver is himself a confederate, Monsieur le Prefet. Besides, even if we find the cab, aren't we bound to suppose that Gaston Sauverand will know how to front the scent? We shall have trouble, Monsieur le Prefet."

"Yes," whispered Don Luis, who had been present at the first investigation and who was left alone for a moment with Mazeroux. "Yes, you will have trouble, especially if you let the people you capture take to their heels. Eh, Mazeroux, what did I tell you last night? But, still, what a scoundrel! And he's not alone, Alexandre. I'll answer for it that he has accomplices—and not a hundred yards from my house—do you understand? From my house."

After questioning Mazeroux upon Sauverand's attitude and the other incidents of the arrest, Don Luis went back to the Place du Palais-Bourbon.

* * * * *

The inquiry which he had to make related to events that were certainly quite as strange as those which he had just witnessed; and while the part played by Gaston Sauverand in the pursuit of the Mornington inheritance deserved all his attention, the behaviour of Mile. Levasseur puzzled him no less.

He could not forget the cry of terror that escaped the girl while he was telephoning to Mazeroux, nor the scared expression of her face. Now it was impossible to attribute that cry and that expression to anything other than the words which he had uttered in reply to Mazeroux:

"What! Mme. Fauville tried to commit suicide!"

The fact was certain; and the connection between the announcement of the attempt and Mlle. Levasseur's extreme emotion was too obvious for Perenna not to try to draw conclusions.

He went straight to his study and at once examined the arch leading to the telephone box. This arch, which was about six feet wide and very low, had no door, but merely a velvet hanging, which was nearly always drawn up, leaving the arch uncovered. Under the hanging, among the moldings of the cornice, was a button that had only to be pressed to bring down the iron curtain against which he had thrown himself two hours before.

He worked the catch two or three times over, and his experiments proved to him in the most explicit fashion that the mechanism was in perfect order and unable to act without outside intervention. Was he then to conclude that the girl had wanted to kill him? But what could be her motive?

He was on the point of ringing and sending for her, so as to receive the explanation which he was resolved to demand from her. However, the minutes passed and he did not ring. He saw her through the window as she walked slowly across the yard, her body swinging gracefully from her hips. A ray of sunshine lit up the gold of her hair.

All the rest of the morning he lay on a sofa, smoking cigars. He was ill at ease, dissatisfied with himself and with the course of events, not one of which brought him the least glimmer of truth; in fact, all of them seemed to deepen the darkness in which he was battling. Eager to act, the moment he did so he encountered fresh obstacles that paralyzed his powers of action and left him in utter ignorance of the nature of his adversaries.

But, at twelve o'clock, just as he had rung for lunch, his butler entered the study with a tray in his hand, and exclaimed, with an agitation which showed that the household was aware of Don Luis's ambiguous position:

"Sir, it's the Prefect of Police!"

"Eh?" said Perenna. "Where is he?"

"Downstairs, sir. I did not know what to do, at first ... and I thought of telling Mlle. Levasseur. But—"

"Are you sure?"

"Here is his card, sir."

Perenna took the card from the tray and read M. Desmalions's name. He went to the window, opened it and, with the aid of the overhead mirror, looked into the Place du Palais-Bourbon. Half a dozen men were walking about. He recognized them. They were his usual watchers, those whom he had got rid of on the evening before and who had come to resume their observation.

"No others?" he said to himself. "Come, we have nothing to fear, and the Prefect of Police has none but the best intentions toward me. It was what I expected; and I think that I was well advised to save his life."

M. Desmalions entered without a word. All that he did was to bend his head slightly, with a movement that might be taken for a bow. As for Weber, who was with him, he did not even give himself the trouble to disguise his feelings toward such a man as Perenna.

Don Luis took no direct notice of this attitude, but, in revenge, ostentatiously omitted to push forward more than one chair. M. Desmalions, however, preferred to walk about the room, with his hands behind his back, as if to continue his reflections before speaking.

The silence was prolonged. Don Luis waited patiently. Then, suddenly, the Prefect stopped and said:

"When you left the Boulevard Richard-Wallace, Monsieur, did you go straight home?"

Don Luis did not demur to this cross-examining manner and answered:

"Yes, Monsieur le Prefet."

"Here, to your study?"

"Here, to my study."

M. Desmalions paused and then went on:

"I left thirty or forty minutes after you and drove to the police office in my car. There I received this express letter. Read it. You will see that it was handed in at the Bourse at half-past nine."

Don Luis took the letter and read the following words, written in capital letters:

This is to inform you that Gaston Sauverand, after making his escape, rejoined his accomplice Perenna, who, as you know, is none other than Arsene Lupin. Arsene Lupin gave you Sauverand's address in order to get rid of him and to receive the Mornington inheritance. They were reconciled this morning, and Arsene Lupin suggested a safe hiding-place to Sauverand. It is easy to prove their meeting and their complicity. Sauverand handed Lupin the half of the walking-stick which he had carried away unawares. You will find it under the cushions of a sofa standing between the two windows of Perenna's study.

Don Luis shrugged his shoulders. The letter was absurd; for he had not once left his study. He folded it up quietly and handed it to the Prefect of Police without comment. He was resolved to let M. Desmalions take the initiative in the conversation.

The Prefect asked:

"What is your reply to the accusation?"

"None, Monsieur le Prefet."

"Still, it is quite plain and easy to prove or disprove."

"Very easy, indeed, Monsieur le Prefet; the sofa is there, between the windows."

M. Desmalions waited two or three seconds and then walked to the sofa and moved the cushions. Under one of them lay the handle end of the walking-stick.

Don Luis could not repress a gesture of amazement and anger. He had not for a second contemplated the possibility of such a miracle; and it took him unawares. However, he mastered himself. After all, there was nothing to prove that this half of a walking-stick was really that which had been seen in Gaston Sauverand's hands and which Sauverand had carried away by mistake.

"I have the other half on me," said the Prefect of Police, replying to the unspoken objection. "Deputy Chief Weber himself picked it up on the Boulevard Richard-Wallace. Here it is."

He produced it from the inside pocket of his overcoat and tried it. The ends of the two pieces fitted exactly.

There was a fresh pause. Perenna was confused, as were those, invariably, upon whom he himself used to inflict this kind of defeat and humiliation. He could not get over it. By what prodigy had Gaston Sauverand managed, in that short space of twenty minutes, to enter the house and make his way into this room? Even the theory of an accomplice living in the house did not do much to make the phenomenon easier to understand.

"It upsets all my calculations," he thought, "and I shall have to go through the mill this time. I was able to baffle Mme. Fauville's accusation and to foil the trick of the turquoise. But M. Desmalions will never admit that this is a similar attempt and that Gaston Sauverand has tried, as Marie Fauville did, to get me out of the way by compromising me and procuring my arrest."

"Well," exclaimed M. Desmalions impatiently, "answer! Defend yourself!"

"No, Monsieur le Prefet, it is not for me to defend myself,"

M. Desmalions stamped his foot and growled:

"In that case ... in that case ... since you confess ... since—"

He put his hand on the latch of the window, ready to open it. A whistle, and the detectives would burst in and all would be over.

"Shall I have your inspectors called, Monsieur le Prefet?" asked Don Luis.

M. Desmalions did not reply. He let go the window latch and started walking about the room again. And, suddenly, while Perenna was wondering why he still hesitated, for the second time the Prefect planted himself in front of him, and said:

"And suppose I looked upon the incident of the walking-stick as not having occurred, or, rather, as an incident which, while doubtless proving the treachery of your servants, is not able to compromise yourself? Suppose I took only the services which you have already rendered us into consideration? In a word, suppose I left you free?"

Perenna could not help smiling. Notwithstanding the affair of the walking-stick and though appearances were all against him, at the moment when everything seemed to be going wrong, things were taking the course which he had prophesied from the start, and which he had mentioned to Mazeroux during the inquiry on the Boulevard Suchet. They wanted him.

"Free?" he asked. "No more supervision? Nobody shadowing my movements?"

"Nobody."

"And what if the press campaign around my name continues, if the papers succeed, by means of certain pieces of tittle-tattle, of certain coincidences, in creating a public outcry, if they call for measures against me?"

"Those measures shall not be taken."

"Then I have nothing to fear?"

"Nothing."

"Will M. Weber abandon his prejudices against me?"

"At any rate, he will act as though he did, won't you, Weber?"

The deputy chief uttered a few grunts which might be taken as an expression of assent; and Don Luis at once exclaimed:

"In that case, Monsieur le Prefet, I am sure of gaining the victory and of gaining it in accordance with the wishes and requirements of the authorities."

And so, by a sudden change in the situation, after a series of exceptional circumstances, the police themselves, bowing before Don Luis Perenna's superior qualities of mind, acknowledging all that he had already done and foreseeing all that he would be able to do, decided to back him up, begging for his assistance, and offering him, so to speak, the command of affairs.

It was a flattering compliment. Was it addressed only to Don Luis Perenna? And had Lupin, the terrible, undaunted Lupin, no right to claim his share? Was it possible to believe that M. Desmalions, in his heart of hearts, did not admit the identity of the two persons?

Nothing in the Prefect's attitude gave any clue to his secret thoughts. He was suggesting to Don Luis Perenna one of those compacts which the police are often obliged to conclude in order to gain their ends. The compact was concluded, and no more was said upon the subject.

"Do you want any particulars of me?" asked the Prefect of Police.

"Yes, Monsieur le Prefet. The papers spoke of a notebook found in poor Inspector Verot's pocket. Did the notebook contain a clue of any kind?"

"No. Personal notes, lists of disbursements, that's all. Wait, I was forgetting, there was a photograph of a woman, about which I have not yet been able to obtain the least information. Besides, I don't suppose that it bears upon the case and I have not sent it to the newspapers. Look, here it is."

Perenna took the photograph which the Prefect handed him and gave a start that did not escape M. Desmalions's eye.

"Do you know the lady?"

"No. No, Monsieur le Prefet. I thought I did; but no, there's merely a resemblance—a family likeness, which I will verify if you can leave the photograph with me till this evening."

"Till this evening, yes. When you have done with it, give it back to Sergeant Mazeroux, whom I will order to work in concert with you in everything that relates to the Mornington case."

The interview was now over. The Prefect went away. Don Luis saw him to the door. As M. Desmalions was about to go down the steps, he turned and said simply:

"You saved my life this morning. But for you, that scoundrel Sauverand—"

"Oh, Monsieur le Prefet!" said Don Luis, modestly protesting.

"Yes, I know, you are in the habit of doing that sort of thing. All the same, you must accept my thanks."

And the Prefect of Police made a bow such as he would really have made to Don Luis Perenna, the Spanish noble, the hero of the Foreign Legion. As for Weber, he put his two hands in his pockets, walked past with the look of a muzzled mastiff, and gave his enemy a glance of fierce hatred.

"By Jupiter!" thought Don Luis. "There's a fellow who won't miss me when he gets the chance to shoot!"

Looking through a window, he saw M. Desmalions's motor car drive off. The detectives fell in behind the deputy chief and left the Place du Palais-Bourbon. The siege was raised.

"And now to work!" said Don Luis. "My hands are free, and we shall make things hum."

He called the butler.

"Serve lunch; and ask Mlle. Levasseur to come and speak to me immediately after."

He went to the dining-room and sat down, placing on the table the photograph which M. Desmalions had left behind; and, bending over it, he examined it attentively. It was a little faded, a little worn, as photographs have a tendency to become when they lie about in pocket-books or among papers; but the picture was quite clear. It was the radiant picture of a young woman in evening dress, with bare arms and shoulders, with flowers and leaves in her hair and a smile upon her face.

"Mlle. Levasseur, Mlle. Levasseur," he said. "Is it possible!"

In a corner was a half-obliterated and hardly visible signature. He made out, "Florence," the girl's name, no doubt. And he repeated:

"Mlle. Levasseur, Florence Levasseur. How did her photograph come to be in Inspector Verot's pocket-book? And what is the connection between this adventure and the reader of the Hungarian count from whom I took over the house?"

He remembered the incident of the iron curtain. He remembered the article in the Echo de France, an article aimed against him, of which he had found the rough draft in his own courtyard. And, above all, he thought of the problem of that broken walking-stick conveyed into his study.

And, while his mind was striving to read these events clearly, while he tried to settle the part played by Mlle. Levasseur, his eyes remained fixed upon the photograph and he gazed absent-mindedly at the pretty lines of the mouth, the charming smile, the graceful curve of the neck, the admirable sweep of the shoulders.

The door opened suddenly and Mlle. Levasseur burst into the room. Perenna, who had dismissed the butler, was raising to his lips a glass of water which he had just filled for himself. She sprang forward, seized his arm, snatched the glass from him and flung it on the carpet, where it smashed to pieces.

"Have you drunk any of it? Have you drunk any of it?" she gasped, in a choking voice.

He replied:

"No, not yet. Why?"

She stammered:

"The water in that bottle ... the water in that bottle—"

"Well?"

"It's poisoned!"

He leapt from his chair and, in his turn, gripped her arm fiercely:

"What's that? Poisoned! Are you certain? Speak!"

In spite of his usual self-control, he was this time thoroughly alarmed. Knowing the terrible effects of the poison employed by the miscreants whom he was attacking, recalling the corpse of Inspector Verot, the corpses of Hippolyte Fauville and his son, he knew that, trained though he was to resist comparatively large doses of poison, he could not have escaped the deadly action of this. It was a poison that did not forgive, that killed, surely and fatally.

The girl was silent. He raised his voice in command:

"Answer me! Are you certain?"

"No ... it was an idea that entered my head—a presentiment ... certain coincidences—"

It was as though she regretted her words and now tried to withdraw them.

"Come, come," he cried, "I want to know the truth: You're not certain that the water in this bottle is poisoned?"

"No ... it's possible—"

"Still, just now—"

"I thought so. But no ... no!"

"It's easy to make sure," said Perenna, putting out his hand for the water bottle.

She was quicker than he, seized it and, with one blow, broke it against the table.

"What are you doing?" he said angrily.

"I made a mistake. And so there is no need to attach any importance—"

Don Luis hurriedly left the dining-room. By his orders, the water which he drank was drawn from a filter that stood in a pantry at the end of the passage leading from the dining-room to the kitchens and beyond. He ran to it and took from a shelf a bowl which he filled with water from the filter. Then, continuing to follow the passage, which at this spot branched off toward the yard, he called Mirza, the puppy, who was playing by the stables.

"Here," he said, putting the bowl in front of her.

The puppy began to drink. But she stopped almost at once and stood motionless, with her paws tense and stiff. A shiver passed through the little body. The dog gave a hoarse groan, spun round two or three times, and fell.

"She's dead," he said, after touching the animal.

Mile. Levasseur had joined him. He turned to her and rapped out:

"You were right about the poison—and you knew it. How did you know it?"

All out of breath, she checked the beating of her heart and answered:

"I saw the other puppy drinking in the pantry. She's dead. I told the coachman and the chauffeur. They're over there, in the stable. And I ran to warn you."

"In that case, there was no doubt about it. Why did you say that you were not certain that the water was poisoned, when—"

The chauffeur and the coachman were coming out of the stables. Leading the girl away, Perenna said:

"We must talk about this. We'll go to your rooms."

They went back to the bend in the passage. Near the pantry where the filter was, another passage ran, ending in a flight of three steps, with a door at the top of the steps. Perenna opened this door. It was the entrance to the rooms occupied by Mlle. Levasseur. They went into a sitting-room.

Don Luis closed the entrance door and the door of the sitting-room.

"And now," he said, in a resolute tone, "you and I will have an explanation."



CHAPTER SEVEN

SHAKESPEARE'S WORKS, VOLUME VIII

Two lodges, belonging to the same old-time period as the house itself, stood at the extreme right and left of the low wall that separated the front courtyard from the Place du Palais-Bourbon. These lodges were joined to the main building, situated at the back of the courtyard, by a series of outhouses. On one side were the coach-houses, stables, harness-rooms, and garage, with the porter's lodge at the end; on the other side, the wash-houses, kitchens, and offices, ending in the lodge occupied by Mlle. Levasseur.

This lodge had only a ground floor, consisting of a dark entrance hall and one large room, most of which served as a sitting-room, while the rest, arranged as a bedroom, was really only a sort of alcove. A curtain hid the bed and wash-hand-stand. There were two windows looking out on the Place du Palais-Bourbon.

It was the first time that Don Luis had set foot in Mlle. Levasseur's room. Engrossed though he was with other matters, he felt its charm. It was very simply furnished: some old mahogany chairs and armchairs, a plain, Empire writing-table, a round table with one heavy, massive leg, and some book-shelves. But the bright colour of the linen curtains enlivened the room. On the walls hung reproductions of famous pictures, drawings of sunny buildings and landscapes, Italian villas, Sicilian temples....

The girl remained standing. She had resumed her composure, and her face had taken on the enigmatical expression so difficult to fathom, especially as she had assumed a deliberate air of dejection, which Perenna guessed was intended to hide her excitement and alertness, together with the tumultuous feelings which even she had great difficulty in controlling.

Her eyes looked neither timorous nor defiant. It really seemed as though she had nothing to fear from the explanation.

Don Luis kept silent for some little time. It was strange and it annoyed him to feel it, but he experienced a certain embarrassment in the presence of this woman, against whom he was inwardly bringing the most serious charges. And, not daring to put them into words, not daring to say plainly what he thought, he began:

"You know what happened in this house this morning?"

"This morning?"

"Yes, when I had finished speaking on the telephone."

"I know now. I heard it from the servants, from the butler."

"Not before?"

"How could I have known earlier?"

She was lying. It was impossible that she should be speaking the truth. And yet in what a calm voice she had replied!

He went on:

"I will tell you, in a few words, what happened. I was leaving the telephone box, when the iron curtain, concealed in the upper part of the wall, fell in front of me. After making sure that there was nothing to be done, I simply resolved, as I had the telephone by me, to call in the assistance of one of my friends. I rang up Major d'Astrignac. He came at once and, with the help of the butler, let me out. Is that what you heard?"

"Yes, Monsieur. I had gone to my room, which explains why I knew nothing of the incident or of Major d'Astrignac's visit."

"Very well. It appears, however, from what I learned when I was released, that the butler and, for that matter, everybody in the house, including yourself, knew of the existence of that iron curtain."

"Certainly."

"And how did you know it?"

"Through Baron Malonyi. He told me that, during the Revolution, his great-grandmother, on the mother's side, who then occupied this house and whose husband was guillotined, remained hidden in that recess for thirteen months. At that time the curtain was covered with woodwork similar to that of the room."

"It's a pity that I wasn't informed of it, for, after all, I was very nearly crushed to death."

This possibility did not seem to move the girl. She said:

"It would be a good thing to look at the mechanism and see why it became unfastened. It's all very old and works badly."

"The mechanism works perfectly. I tested it. An accident is not enough to account for it."

"Who could have done it, if it was not an accident?"

"Some enemy whom I am unable to name."

"He would have been seen."

"There was only one person who could have seen him—yourself. You happened to pass through my study as I was telephoning and I heard your exclamation of fright at the news about Mme. Fauville."

"Yes, it gave me a shock. I pity the woman so very much, whether she is guilty or not."

"And, as you were close to the arch, with your hand within reach of the spring, the presence of an evildoer would not have escaped your notice."

She did not lower her eyes. A slight flush overspread her face, and she said:

"Yes, I should at least have met him, for, from what I gather, I went out a few seconds before the accident."

"Quite so," he said. "But what is so curious and unlikely is that you did not hear the loud noise of the curtain falling, nor my shouts and all the uproar I created."

"I must have closed the door of the study by that time. I heard nothing."

"Then I am bound to presume that there was some one hidden in my study at that moment, and that this person is a confederate of the ruffians who committed the two murders on the Boulevard Suchet; for the Prefect of Police has just discovered under the cushions of my sofa the half of a walking-stick belonging to one of those ruffians."

She wore an air of great surprise. This new incident seemed really to be quite unknown to her. He came nearer and, looking her straight in the eyes, said:

"You must at least admit that it's strange."

"What's strange?"

"This series of events, all directed against me. Yesterday, that draft of a letter which I found in the courtyard—the draft of the article published in the Echo de France. This morning, first the crash of the iron curtain just as I was passing under it, next, the discovery of that walking-stick, and then, a moment ago, the poisoned water bottle—"

She nodded her head and murmured:

"Yes, yes—there is an array of facts—"

"An array of facts so significant," he said, completing her sentence meaningly, "as to remove the least shadow of doubt. I can feel absolutely certain of the immediate intervention of my most ruthless and daring enemy. His presence here is proved. He is ready to act at any moment. His object is plain," explained Don Luis. "By means of the anonymous article, by means of that half of the walking-stick, he meant to compromise me and have me arrested. By the fall of the curtain he meant to kill me or at least to keep me imprisoned for some hours. And now it's poison, the cowardly poison which kills by stealth, which they put in my water to-day and which they will put in my food to-morrow. And next it will be the dagger and then the revolver and then the rope, no matter which, so long as I disappear; for that is what they want: to get rid of me.

"I am the adversary, I am the man they're afraid of, the man who will discover the secret one day and pocket the millions which they're after. I am the interloper. I stand mounting guard over the Mornington inheritance. It's my turn to suffer. Four victims are dead already. I shall be the fifth. So Gaston Sauverand has decided: Gaston Sauverand or some one else who's managing the business."

Perenna's eyes narrowed.

"The accomplice is here, in this house, in the midst of everything, by my side. He is lying in wait for me. He is following every step I take. He is living in my shadow. He is waiting for the time and place to strike me. Well, I have had enough of it. I want to know, I will know, and I shall know. Who is he?"

The girl had moved back a little way and was leaning against the round table. He took another step forward and, with his eyes still fixed on hers, looking in that immobile face for a quivering sign of fear or anxiety, he repeated, with greater violence:

"Who is the accomplice? Who in the house has sworn to take my life?"

"I don't know," she said, "I don't know. Perhaps there is no plot, as you think, but just a series of chance coincidences—"

He felt inclined to say to her, with his habit of adopting a familiar tone toward those whom he regarded as his adversaries:

"You're lying, dearie, you're lying. The accomplice is yourself, my beauty. You alone overheard my conversation on the telephone with Mazeroux, you alone can have gone to Gaston Sauverand's assistance, waited for him in a motor at the corner of the boulevard, and arranged with him to bring the top half of the walking-stick here. You're the beauty that wants to kill me, for some reason which I do not know. The hand that strikes me in the dark is yours, sweetheart."

But it was impossible for him to treat her in this fashion; and he was so much exasperated at not being able to proclaim his certainty in words of anger and indignation that he took her fingers and twisted them violently, while his look and his whole attitude accused the girl even more forcibly than the bitterest words.

He mastered himself and released his grip. The girl freed herself with a quick movement, indicating repulsion and hatred. Don Luis said:

"Very well. I will question the servants. If necessary I shall dismiss any whom I suspect."

"No, don't do that," she said eagerly. "You mustn't. I know them all."

Was she going to defend them? Was she yielding to a scruple of conscience at the moment when her obstinacy and duplicity were on the point of causing her to sacrifice a set of servants whose conduct she knew to be beyond reproach? Don Luis received the impression that the glance which she threw at him contained an appeal for pity. But pity for whom? For the others? Or for herself?

They were silent for a long time. Don Luis, standing a few steps away from her, thought of the photograph, and was surprised to find in the real woman all the beauty of the portrait, all that beauty which he had not observed hitherto, but which now struck him as a revelation. The golden hair shone with a brilliancy unknown to him. The mouth wore a less happy expression, perhaps, a rather bitter expression, but one which nevertheless retained the shape of the smile. The curve of the chin, the grace of the neck revealed above the dip of the linen collar, the line of the shoulders, the position of the arms, and of the hands resting on her knees: all this was charming and very gentle and, in a manner, very seemly and reassuring. Was it possible that this woman should be a murderess, a poisoner?

He said:

"I forget what you told me that your Christian name was. But the name you gave me was not the right one."

"Yes, it was," she said.

"Your name is Florence: Florence Levasseur."

She started.

"What! Who told you? Florence? How do you know?"

"Here is your photograph, with your name on it almost illegible."

"Oh!" she said, amazed at seeing the picture. "I can't believe it! Where does it come from? Where did you get it from?" And, suddenly, "It was the Prefect of Police who gave it to you, was it not? Yes, it was he, I'm sure of it. I am sure that this photograph is to identify me and that they are looking for me, for me, too. And it's you again, it's you again—"

"Have no fear," he said. "The print only wants a few touches to alter the face beyond recognition. I will make them. Have no fear."

She was no longer listening to him. She gazed at the photograph with all her concentrated attention and murmured:

"I was twenty years old.... I was living in Italy. Dear me, how happy I was on the day when it was taken! And how happy I was when I saw my portrait!... I used to think myself pretty in those days.... And then it disappeared.... It was stolen from me like other things that had already been stolen from me, at that time—"

And, sinking her voice still lower, speaking her name as if she were addressing some other woman, some unhappy friend, she repeated:

"Florence.... Florence—"

Tears streamed down her cheeks.

"She is not one of those who kill," thought Don Luis. "I can't believe that she is an accomplice. And yet—and yet—"

He moved away from her and walked across the room from the window to the door. The drawings of Italian landscapes on the wall attracted his attention. Next, he read the titles of the books on the shelves. They represented French and foreign works, novels, plays, essays, volumes of poetry, pointing to a really cultivated and varied taste.

He saw Racine next to Dante, Stendhal near Edgar Allan Poe, Montaigne between Goethe and Virgil. And suddenly, with that extraordinary faculty which enabled him, in any collection of objects, to perceive details which he did not at once take in, he noticed that one of the volumes of an English edition of Shakespeare's works did not look exactly like the others. There was something peculiar about the red morocco back, something stiff, without the cracks and creases which show that a book has been used.

It was the eighth volume. He took it out, taking care not to be heard.

He was not mistaken. The volume was a sham, a mere set of boards surrounding a hollow space that formed a box and thus provided a regular hiding-place; and, inside this book, he caught sight of plain note-paper, envelopes of different kinds, and some sheets of ordinary ruled paper, all of the same size and looking as if they had been taken from a writing-pad.

And the appearance of these ruled sheets struck him at once. He remembered the look of the paper on which the article for the Echo de France had been drafted. The ruling was identical, and the shape and size appeared to be the same.

On lifting the sheets one after the other, he saw, on the last but one, a series of lines consisting of words and figures in pencil, like notes hurriedly jotted down.

He read:

"House on the Boulevard Suchet. "First letter. Night of 15 April. "Second. Night of 25th. "Third and fourth. Nights of 5 and 15 May. "Fifth and explosion. Night of 25 May."

And, while noting first that the date of the first night was that of the actual day, and next that all these dates followed one another at intervals of ten days, he remarked the resemblance between the writing and the writing of the rough draft.

The draft was in a notebook in his pocket. He was therefore in a position to verify the similarity of the two handwritings and of the two ruled sheets of paper. He took his notebook and opened it. The draft was not there.

"Gad," he snarled, "but this is a bit too thick!"

And, at the same time, he remembered clearly that, when he was telephoning to Mazeroux in the morning, the notebook was in the pocket of his overcoat and that he had left his overcoat on a chair near the telephone box. Now, at that moment, Mlle. Levasseur, for no reason, was roaming about the study. What was she doing there?

"Oh, the play-actress!" thought Perenna, raging within himself. "She was humbugging me. Her tears, her air of frankness, her tender memories: all bunkum! She belongs to the same stock and the same gang as Marie Fauville and Gaston Sauverand. Like them, she is an accomplished liar and actress from her slightest gesture down to the least inflection of her innocent voice."

He was on the point of having it all out with her and confounding her. This time, the proof was undeniable. Dreading an inquiry which might have brought the facts home to her, she had been unwilling to leave the draft of the article in the adversary's hands.

How could he doubt, from this moment, that she was the accomplice employed by the people who were working the Mornington affair and trying to get rid of him? Had he not every right to suppose that she was directing the sinister gang, and that, commanding the others with her audacity and her intelligence, she was leading them toward the obscure goal at which they were aiming?

For, after all, she was free, entirely free in her actions and movements. The windows opening on the Place du Palais-Bourbon gave her every facility for leaving the house under cover of the darkness and coming in again unknown to anybody.

It was therefore quite possible that, on the night of the double crime, she was among the murderers of Hippolyte Fauville and his son. It was quite possible that she had taken part in the murders, and even that the poison had been injected into the victims by her hand, by that little, white, slender hand which he saw resting against the golden hair.

A shudder passed through him. He had softly put back the paper in the book, restored the book in its place, and moved nearer to the girl.

All of a sudden, he caught himself studying the lower part of her face, the shape of her jaw! Yes, that was what he was making every effort to guess, under the curve of the cheeks and behind the veil of the lips. Almost against his will, with personal anguish mingled with torturing curiosity, he stared and stared, ready to force open those closed lips and to seek the reply to the terrifying problem that suggested itself to him.

Those teeth, those teeth which he did not see, were not they the teeth that had left the incriminating marks in the fruit? Which were the teeth of the tiger, the teeth of the wild beast: these, or the other woman's?

It was an absurd supposition, because the marks had been recognized as made by Marie Fauville. But was the absurdity of a supposition a sufficient reason for discarding it?

Himself astonished at the feelings that agitated him, fearing lest he should betray himself, he preferred to cut short the interview and, going up to the girl, he said to her, in an imperious and aggressive tone:

"I wish all the servants in the house to be discharged. You will give them their wages, pay them such compensation as they ask for, and see that they leave to-day, definitely. Another staff of servants will arrive this evening. You will be here to receive them."

She made no reply. He went away, taking with him the uncomfortable impression that had lately marked his relations with Florence. The atmosphere between them always remained heavy and oppressive. Their words never seemed to express the private thoughts of either of them; and their actions did not correspond with the words spoken. Did not the circumstances logically demand the immediate dismissal of Florence Levasseur as well? Yet Don Luis did not so much as think of it.

Returning to his study, he at once rang up Mazeroux and, lowering his voice so as not to let it reach the next room, he said:

"Is that you, Mazeroux?"

"Yes."

"Has the Prefect placed you at my disposal?"

"Yes."

"Well, tell him that I have sacked all my servants and that I have given you their names and instructed you to have an active watch kept on them. We must look among them for Sauverand's accomplice. Another thing: ask the Prefect to give you and me permission to spend the night at Hippolyte Fauville's house."

"Nonsense! At the house on the Boulevard Suchet?"

"Yes, I have every reason to believe that something's going to happen there."

"What sort of thing?"

"I don't know. But something is bound to take place. And I insist on being at it. Is it arranged?"

"Right, Chief. Unless you hear to the contrary, I'll meet you at nine o'clock this evening on the Boulevard Suchet."

Perenna did not see Mlle. Levasseur again that day. He went out in the course of the afternoon, and called at the registry office, where he chose some servants: a chauffeur, a coachman, a footman, a cook, and so on. Then he went to a photographer, who made a new copy of Mlle. Levasseur's photograph. Don Luis had this touched up and faked it himself, so that the Prefect of Police should not perceive the substitution of one set of features for another.

He dined at a restaurant and, at nine o'clock, joined Mazeroux on the Boulevard Suchet.

Since the Fauville murders the house had been left in the charge of the porter. All the rooms and all the locks had been sealed up, except the inner door of the workroom, of which the police kept the keys for the purposes of the inquiry.

The big study looked as it did before, though the papers had been removed and put away and there were no books and pamphlets left on the writing-table. A layer of dust, clearly visible by the electric light, covered its black leather and the surrounding mahogany.

"Well, Alexandre, old man," cried Don Luis, when they had made themselves comfortable, "what do you say to this? It's rather impressive, being here again, what? But, this time, no barricading of doors, no bolts, eh? If anything's going to happen, on this night of the fifteenth of April, we'll put nothing in our friends' way. They shall have full and entire liberty. It's up to them, this time."

Though joking, Don Luis was nevertheless singularly impressed, as he himself said, by the terrible recollection of the two crimes which he had been unable to prevent and by the haunting vision of the two dead bodies. And he also remembered with real emotion the implacable duel which he had fought with Mme. Fauville, the woman's despair and her arrest.

"Tell me about her," he said to Mazeroux. "So she tried to kill herself?"

"Yes," said Mazeroux, "a thoroughgoing attempt, though she had to make it in a manner which she must have hated. She hanged herself in strips of linen torn from her sheets and underclothing and twisted together. She had to be restored by artificial respiration. She is out of danger now, I believe, but she is never left alone, for she swore she would do it again."

"She has made no confession?"

"No. She persists in proclaiming her innocence."

"And what do they think at the public prosecutor's? At the Prefect's?"

"Why should they change their opinion, Chief? The inquiries confirm every one of the charges brought against her; and, in particular, it has been proved beyond the possibility of dispute that she alone can have touched the apple and that she can have touched it only between eleven o'clock at night and seven o'clock in the morning. Now the apple bears the undeniable marks of her teeth. Would you admit that there are two sets of jaws in the world that leave the same identical imprint?"

"No, no," said Don Luis, who was thinking of Florence Levasseur. "No, the argument allows of no discussion. We have here a fact that is clear as daylight; and the imprint is almost tantamount to a discovery in the act. But then how, in the midst of all this, are we to explain the presence of ——-"

"Whom, Chief?"

"Nobody. I had an idea worrying me. Besides, you see, in all this there are so many unnatural things, such queer coincidences and inconsistencies, that I dare not count on a certainty which the reality of to-morrow may destroy."

They went on talking for some time, in a low voice, studying the question in all its bearings.

At midnight they switched off the electric light in the chandelier and arranged that each should go to sleep in turn.

And the hours went by as they had done when the two sat up before, with the same sounds of belated carriages and motor cars; the same railway whistles; the same silence.

The night passed without alarm or incident of any kind. At daybreak the life out of doors was resumed; and Don Luis, during his waking hours, had not heard a sound in the room except the monotonous snoring of his companion.

"Can I have been mistaken?" he wondered. "Did the clue in that volume of Shakespeare mean something else? Or did it refer to events of last year, events that took place on the dates set down?"

In spite of everything, he felt overcome by a strange uneasiness as the dawn began to glimmer through the half-closed shutters. A fortnight before, nothing had happened either to warn him; and yet there were two victims lying near him when he woke.

At seven o'clock he called out:

"Alexandre!"

"Eh? What is it, Chief?"

"You're not dead?"

"What's that? Dead? No, Chief; why should I be?"

"Quite sure?"

"Well, that's a good 'un! Why not you?"

"Oh, it'll be my turn soon! Considering the intelligence of those scoundrels, there's no reason why they should go on missing me."

They waited an hour longer. Then Perenna opened a window and threw back the shutter.

"I say, Alexandre, perhaps you're not dead, but you're certainly very green."

Mazeroux gave a wry laugh:

"Upon my word, Chief, I confess that I had a bad time of it when I was keeping watch while you were asleep."

"Were you afraid?"

"To the roots of my hair. I kept on thinking that something was going to happen. But you, too, Chief, don't look as if you had been enjoying yourself. Were you also—"

He interrupted himself, on seeing an expression of unbounded astonishment on Don Luis's face.

"What's the matter, Chief?"

"Look! ... on the table ... that letter—"

He looked. There was a letter on the writing-table, or, rather, a letter-card, the edges of which had been torn along the perforation marks; and they saw the outside of it, with the address, the stamp, and the postmarks.

"Did you put that there, Alexandre?"

"You're joking, Chief. You know it can only have been you."

"It can only have been I ... and yet it was not I."

"But then—"

Don Luis took the letter-card and, on examining it, found that the address and the postmarks had been scratched out so as to make it impossible to read the name of the addressee or where he lived, but that the place of posting was quite clear, as was the date: Paris, 4 January, 19—.

"So the letter is three and a half months old," said Don Luis.

He turned to the inside of the letter. It contained a dozen lines and he at once exclaimed:

"Hippolyte Fauville's signature!"

"And his handwriting," observed Mazeroux. "I can tell it at a glance. There's no mistake about that. What does it all mean? A letter written by Hippolyte Fauville three months before his death?"

Perenna read aloud:

"MY DEAR OLD FRIEND:

"I can only, alas, confirm what I wrote to you the other day: the plot is thickening around me! I do not yet know what their plan is and still less how they mean to put it into execution; but everything warns me that the end is at hand. I can see it in her eyes. How strangely she looks at me sometimes!

"Oh, the shame of it! Who would ever have thought her capable of it?

"I am a very unhappy man, my dear friend."

"And it's signed Hippolyte Fauville," Mazeroux continued, "and I declare to you that it's actually in his hand ... written on the fourth of January of this year to a friend whose name we don't know, though we shall dig him out somehow, that I'll swear. And this friend will certainly give us the proofs we want."

Mazeroux was becoming excited.

"Proofs? Why, we don't need them! They're here. M. Fauville himself supplies them: 'The end is at hand. I can see it in her eyes.' 'Her' refers to his wife, to Marie Fauville, and the husband's evidence confirms all that we knew against her. What do you say, Chief?"

"You're right," replied Perenna, absent-mindedly, "you're right; the letter is final. Only—"

"Only what?"

"Who the devil can have brought it? Somebody must have entered the room last night while we were here. Is it possible? For, after all, we should have heard. That's what astounds me."

"It certainly looks like it."

"Just so. It was a queer enough job a fortnight ago. But, still, we were in the passage outside, while they were at work in here, whereas, this time, we were here, both of us, close to this very table. And, on this table, which had not the least scrap of paper on it last night, we find this letter in the morning."

A careful inspection of the place gave them no clue to put them on the track. They went through the house from top to bottom and ascertained for certain that there was no one there in hiding. Besides, supposing that any one was hiding there, how could he have made his way into the room without attracting their attention? There was no solving the problem.

"We won't look any more," said Perenna, "it's no use. In matters of this sort, some day or other the light enters by an unseen cranny and everything gradually becomes clear. Take the letter to the Prefect of Police, tell him how we spent the night, and ask his permission for both of us to come back on the night of the twenty-fifth of April. There's to be another surprise that night; and I'm dying to know if we shall receive a second letter through the agency of some Mahatma."

They closed the doors and left the house.

While they were walking to the right, toward La Muette, in order to take a taxi, Don Luis chanced to turn his head to the road as they reached the end of the Boulevard Suchet. A man rode past them on a bicycle. Don Luis just had time to see his clean-shaven face and his glittering eyes fixed upon himself.

"Look out!" he shouted, pushing Mazeroux so suddenly that the sergeant lost his balance.

The man had stretched out his hand, armed with a revolver. A shot rang out. The bullet whistled past the ears of Don Luis, who had bobbed his head.

"After him!" he roared. "You're not hurt, Mazeroux?"

"No, Chief."

They both rushed in pursuit, shouting for assistance. But, at that early hour, there are never many people in the wide avenues of this part of the town. The man, who was making off swiftly, increased his distance, turned down the Rue Octave-Feuillet, and disappeared.

"All right, you scoundrel, I'll catch you yet!" snarled Don Luis, abandoning a vain pursuit.

"But you don't even know who he is, Chief."

"Yes, I do: it's he."

"Who?"

"The man with the ebony stick. He's cut off his beard and shaved his face, but I knew him for all that. It was the man who was taking pot-shots at us yesterday morning, from the top of his stairs on the Boulevard Richard-Wallace, the one who killed Inspector Ancenis. The blackguard! How did he know that I had spent the night at Fauville's? Have I been followed then and spied on? But by whom? And why? And how?"

Mazeroux reflected and said:

"Remember, Chief, you telephoned to me in the afternoon to give me an appointment. For all you know, in spite of lowering your voice, you may have been heard by somebody at your place."

Don Luis did not answer. He thought of Florence.

That morning Don Luis's letters were not brought to him by Mlle. Levasseur, nor did he send for her. He caught sight of her several times giving orders to the new servants. She must afterward have gone back to her room, for he did not see her again.

In the afternoon he rang for his car and drove to the house on the Boulevard Suchet, to pursue with Mazeroux, by the Prefect's instructions, a search that led to no result whatever.

It was ten o'clock when he came in. The detective sergeant and he had some dinner together. Afterward, wishing also to examine the home of the man with the ebony stick, he got into his car again, still accompanied by Mazeroux, and told the man to drive to the Boulevard Richard-Wallace.

The car crossed the Seine and followed the right bank.

"Faster," he said to his new chauffeur, through the speaking-tube. "I'm accustomed to go at a good pace."

"You'll have an upset one fine day, Chief," said Mazeroux.

"No fear," replied Don Luis. "Motor accidents are reserved for fools."

They reached the Place de l'Alma. The car turned to the left.

"Straight ahead!" cried Don Luis. "Go up by the Trocadero."

The car veered back again. But suddenly it gave three or four lurches in the road, took the pavement, ran into a tree and fell over on its side.

In a few seconds a dozen people were standing round. They broke one of the windows and opened the door. Don Luis was the first.

"It's nothing," he said. "I'm all right. And you, Alexandre?"

They helped the sergeant out. He had a few bruises and a little pain, but no serious injury.

Only the chauffeur had been thrown from his seat and lay motionless on the pavement, bleeding from the head. He was carried into a chemist's shop and died in ten minutes.

Mazeroux had gone in with the poor victim and, feeling pretty well stunned, had himself been given a pick-me-up. When he went back to the motor car he found two policemen entering particulars of the accident in their notebooks and taking evidence from the bystanders; but the chief was not there.

Perenna in fact had jumped into a taxicab and driven home as fast as he could. He got out in the square, ran through the gateway, crossed the courtyard, and went down the passage that led to Mlle. Levasseur's quarters. He leaped up the steps, knocked, and entered without waiting for an answer.

The door of the room that served as a sitting-room was opened and Florence appeared. He pushed her back into the room, and said, in a tone furious with indignation:

"It's done. The accident has occurred. And yet none of the old servants can have prepared it, because they were not there and because I was out with the car this afternoon. Therefore, it must have been late in the day between six and nine o'clock, that somebody went to the garage and filed the steering-rod three quarters through."

"I don't understand. I don't understand," she said, with a scared look.

"You understand perfectly well that the accomplice of the ruffians cannot be one of the new servants, and you understand perfectly well that the job was bound to succeed and that it did succeed, beyond their hopes. There is a victim, who suffers instead of myself."

"But tell me what has happened, Monsieur! You frighten me! What accident? What was it?"

"The motor car was overturned. The chauffeur is dead."

"Oh," she said, "how horrible! And you think that I can have—Oh, dead, how horrible! Poor man!"

Her voice grew fainter. She was standing opposite to Perenna, close up against him. Pale and swooning, she closed her eyes, staggered.

He caught her in his arms as she fell. She tried to release herself, but had not the strength; and he laid her in a chair, while she moaned, repeatedly:

"Poor man! Poor man!"

Keeping one of his arms under the girl's head, he took a handkerchief in the other hand and wiped her forehead, which was wet with perspiration, and her pallid cheeks, down which the tears streamed.

She must have lost consciousness entirely, for she surrendered herself to Perenna's cares without the least resistance. And he, making no further movement, began anxiously to examine the mouth before his eyes, the mouth with the lips usually so red, now bloodless and discoloured.

Gently passing one of his fingers over each of them, with a continuous pressure, he separated them, as one separates the petals of a flower; and the two rows of teeth appeared.

They were charming, beautifully shaped, and beautifully white; a little smaller perhaps than Mme. Fauville's, perhaps also arranged in a wider curve. But what did he know? Who could say that their bite would not leave the same imprint? It was an improbable supposition, an impossible miracle, he knew. And yet the circumstances were all against the girl and pointed to her as the most daring, cruel, implacable, and terrible of criminals.

Her breathing became regular. He perceived the cool fragrance of her mouth, intoxicating as the scent of a rose. In spite of himself, he bent down, came so close, so close that he was seized with giddiness and had to make a great effort to lay the girl's head on the back of the chair and to take his eyes from the fair face with the half-parted lips.

He rose to his feet and went.



CHAPTER EIGHT

THE DEVIL'S POST-OFFICE

Of all these events the public knew only of the attempted suicide of Mme. Fauville, the capture and escape of Gaston Sauverand, the murder of Chief Inspector Ancenis, and the discovery of a letter written by Hippolyte Fauville. This was enough, however, to reawaken their curiosity, as they were already singularly puzzled by the Mornington case and took the greatest interest in all the movements, however slight, of the mysterious Don Luis Perenna, whom they insisted on confusing with Arsene Lupin.

He was, of course, credited with the brief capture of the man with the ebony walking-stick. It was also known that he had saved the life of the Prefect of Police, and that, finally, having at his own request spent the night in the house on the Boulevard Suchet, he had become the recipient of Hippolyte Fauville's famous letter. And all this added immensely to the excitement of the aforesaid public.

But how much more complicated and disconcerting were the problems set to Don Luis Perenna himself! Not to mention the denunciation in the anonymous article, there had been, in the short space of forty-eight hours, no fewer than four separate attempts to kill him: by the iron curtain, by poison, by the shooting on the Boulevard Suchet, and by the deliberately prepared motor accident.

Florence's share in this series of attempts was not to be denied. And, now, behold her relations with the Fauvilles' murderers duly established by the little note found in the eighth volume of Shakespeare's plays, while two more deaths were added to the melancholy list: the deaths of Chief Inspector Ancenis and of the chauffeur. How to describe and how to explain the part played, in the midst of all these catastrophes, by that enigmatical girl?

Strangely enough, life went on as usual at the house in the Place du Palais-Bourbon, as though nothing out of the way had happened there. Every morning Florence Levasseur sorted Don Luis's post in his presence and read out the newspaper articles referring to himself or bearing upon the Mornington case.

Not a single allusion was made to the fierce fight that had been waged against him for two days. It was as though a truce had been proclaimed between them; and the enemy appeared to have ceased his attacks for the moment. Don Luis felt easy, out of the reach of danger; and he talked to the girl with an indifferent air, as he might have talked to anybody.

But with what a feverish interest he studied her unobserved! He watched the expression of her face, at once calm and eager, and a painful sensitiveness which showed under the placid mask and which, difficult to control, revealed itself in the frequent quivering of the lips and nostrils.

"Who are you? Who are you?" he felt inclined to exclaim. "Will nothing content you, you she-devil, but to deal out murder all round? And do you want my death also, in order to attain your object? Where do you come from and where are you making for?"

On reflection, he was convinced of a certainty that solved a problem which had preoccupied him for a long time—namely, the mysterious connection between his own presence in the mansion in the Place du Palais-Bourbon and the presence of a woman who was manifestly wreaking her hatred on him.

He now understood that he had not bought the house by accident. In making the purchase he had been persuaded by an anonymous offer that reached him in the form of a typewritten prospectus. Whence did this offer come, if not from Florence, who wished to have him near her in order to spy upon him and wage war upon him?

"Yes," he thought, "that is where the truth lies. As the possible heir of Cosmo Mornington and a prominent figure in the case, I am the enemy, and they are trying to do away with me as they did with the others. And it is Florence who is acting against me. And it is she who has committed murder.

"Everything tells against her; nothing speaks in her defence. Her innocent eyes? The accent of sincerity in her voice? Her serene dignity? And then? Yes, what then? Have I never seen women with that frank look who have committed murder for no reason, almost for pleasure's sake?"

He started with terror at the memory of Dolores Kesselbach. What was it that made him connect these two women at every moment in his mind? He had loved one of them, that monster Dolores, and had strangled her with his own hands. Was fate now leading him toward a like love and a similar murder?

When Florence left him he would experience a sense of satisfaction and breathe more easily, as though released from an oppressive weight, but he would run to the window and see her crossing the courtyard and be still waiting when the girl whose scented breath he had felt upon his face passed to and fro.

One morning she said to him:

"The papers say that it will be to-night."

"To-night?"

"Yes," she said, showing him an article in one of the newspapers. "This is the twenty-fifth; and, according to the information of the police, supplied, they say, by you, there should be a letter delivered in the house on the Boulevard Suchet every tenth day, and the house is to be destroyed by an explosion on the day when the fifth and last letter appears."

Was she defying him? Did she wish to make him understand that, whatever happened, whatever the obstacles, the letters would appear, those mysterious letters prophesied on the list which he had found in the eighth volume of Shakespeare's plays?

He looked at her steadily. She did not flinch. He answered:

"Yes, this is the night. I shall be there. Nothing in the world will prevent me."

She was on the point of replying, but once more controlled her feelings.

That day Don Luis was on his guard. He lunched and dined out and arranged with Mazeroux to have the Place du Palais-Bourbon watched.

Mlle. Levasseur did not leave the house during the afternoon. In the evening Don Luis ordered Mazeroux's men to follow any one who might go out at that time.

At ten o'clock the sergeant joined Don Luis in Hippolyte Fauville's workroom. Deputy Chief Detective Weber and two plain-clothesmen were with him.

Don Luis took Mazeroux aside:

"They distrust me. Own up to it."

"No. As long as M. Desmalions is there, they can do nothing against you. Only, M. Weber maintains—and he is not the only one—that you fake up all these occurrences yourself."

"With what object?"

"With the object of furnishing proof against Marie Fauville and getting her condemned. So I asked for the attendance of the deputy chief and two men. There will be four of us to bear witness to your honesty."

They all took up their posts. Two detectives were to sit up in turns.

This time, after making a minute search of the little room in which Fauville's son used to sleep, they locked and bolted the doors and shutters. At eleven o'clock they switched off the electric chandelier.

Don Luis and Weber hardly slept at all.

The night passed without incident of any kind.

But, at seven o'clock, when the shutters were opened, they saw that there was a letter on the table. Just as on the last occasion, there was a letter on the table!

When the first moment of stupefaction was over, the deputy chief took the letter. His orders were not to read it and not to let any one else read it.

Here is the letter, published by the newspapers, which also published the declarations of the experts certifying that the handwriting was Hippolyte Fauville's:

"I have seen him! You understand, don't you, my dear friend? I have seen him! He was walking along a path in the Bois, with his coat collar turned up and his hat pulled over his ears. I don't think that he saw me. It was almost dark. But I knew him at once. I knew the silver handle of his ebony stick. It was he beyond a doubt, the scoundrel!

"So he is in Paris, in spite of his promise. Gaston Sauverand is in Paris! Do you understand the terrible significance of that fact? If he is in Paris, it means that he intends to act. If he is in Paris, it means certain death to me. Oh, the harm which I shall have suffered at that man's hands! He has already robbed me of my happiness; and now he wants my life. I am terrified."

So Fauville knew that the man with the ebony walking-stick, that Gaston Sauverand, was designing to kill him. Fauville declared it most positively, by evidence written in his own hand; and the letter, moreover, corroborating the words that had escaped Gaston Sauverand at his arrest, showed that the two men had at one time had relations with each other, that they were no longer friends, and that Gaston Sauverand had promised never to come to Paris.

A little light was therefore being shed on the darkness of the Mornington case. But, on the other hand, how inconceivable was the mystery of that letter found on the table in the workroom!

Five men had kept watch, five of the smartest men obtainable; and yet, on that night, as on the night of the fifteenth of April, an unknown hand had delivered the letter in a room with barricaded doors and windows, without their hearing a sound or discovering any signs that the fastenings of the doors or windows had been tampered with.

The theory of a secret outlet was at once raised, but had to be abandoned after a careful examination of the walls and after an interview with the contractor who had built the house, from Fauville's own plans, some years ago.

It is unnecessary once more to recall what I may describe as the flurry of the public. The deed, in the circumstances, assumed the appearance of a sleight-of-hand trick. People felt tempted to look upon it as the recreation of some wonderfully skilful conjurer rather than as the act of a person employing unknown methods.

Nevertheless, Don Luis Perenna's intelligence was justified at all points, for the expected incident had taken place on the twenty-fifth of April, as on the fifteenth. Would the series be continued on the fifth of May? No one doubted it, because Don Luis had said so and because everybody felt that Don Luis could not be mistaken. All through the night of the fifth of May there was a crowd on the Boulevard Suchet; and quidnuncs and night birds of every kind came trooping up to hear the latest news.

The Prefect of Police, greatly impressed by the first two miracles, had determined to see the next one for himself, and was present in person on the third night.

He came accompanied by several inspectors, whom he left in the garden, in the passage, and in the attic on the upper story. He himself took up his post on the ground floor with Weber, Mazeroux, and Don Luis Perenna.

Their expectations were disappointed; and this was M. Desmalions's fault. In spite of the express opinion of Don Luis, who deprecated the experiment as useless, the Prefect had decided not to turn off the electric light, so that he might see if the light would prevent the miracle. Under these conditions no letter could appear, and no letter did appear. The miracle, whether a conjuring trick or a criminal's device, needed the kindly aid of the darkness.

There were therefore ten days lost, always presuming that the diabolical postman would dare to repeat his attempt and produce the third mysterious letter.

* * * * *

On the fifteenth of May the wait was renewed, while the same crowd gathered outside, an anxious, breathless crowd, stirred by the least sound and keeping an impressive silence, with eyes gazing upon the Fauvilles' house.

This time the light was put out, but the Prefect of Police kept his hand on the electric switch. Ten times, twenty times, he unexpectedly turned on the light. There was nothing on the table. What had aroused his attention was the creaking of a piece of furniture or a movement made by one of the men with him.

Suddenly they all uttered an exclamation. Something unusual, a rustling noise, had interrupted the silence.

M. Desmalions at once switched on the light. He gave a cry. A letter lay not on the table, but beside it, on the floor, on the carpet.

Mazeroux made the sign of the cross. The inspectors were as pale as death.

M. Desmalions looked at Don Luis, who nodded his head without a word.

They inspected the condition of the locks and bolts. Nothing had moved.

That day again, the contents of the letter made some amends for the really extraordinary manner of its delivery. It completely dispelled all the doubts that still enshrouded the double murder on the Boulevard Suchet.

Again signed by the engineer, written throughout by himself, on the eighth of February, with no visible address, it said:

"No, my dear friend, I will not allow myself to be killed like a sheep led to the slaughter. I shall defend myself, I shall fight to the last moment. Things have changed lately. I have proofs now, undeniable proofs. I possess letters that have passed between them. And I know that they still love each other as they did at the start, that they want to marry, and that they will let nothing stand in their way. It is written, understand what I say, it is written in Marie's own hand; 'Have patience, my own Gaston. My courage increases day by day. So much the worse for him who stands between us. He shall disappear.'

"My dear friend, if I succumb in the struggle you will find those letters (and all the evidence which I have collected against the wretched creature) in the safe hidden behind the small glass case: Then revenge me. Au revoir. Perhaps good-bye."

Thus ran the third missive. Hippolyte Fauville from his grave named and accused his guilty wife. From his grave he supplied the solution to the riddle and explained the reason why the crimes had been committed: Marie Fauville and Gaston Sauverand were lovers.

Certainly they knew of the existence of Cosmo Mornington's will, for they had begun by doing away with Cosmo Mornington; and their eagerness to come into the enormous fortune had hastened the catastrophe. But the first idea of the murder rose from an older and deep-rooted passion: Marie Fauville and Gaston Sauverand were lovers.

One problem remained to be solved: who was the unknown correspondent to whom Hippolyte Fauville had bequeathed the task of avenging his murder, and who, instead of simply handing over the letters to the police, was exercising his ingenuity to deliver them by means of the most Machiavellian contrivances? Was it to his interest also to remain in the background?

To all these questions Marie Fauville replied in the most unexpected manner, though it was one that fully accorded with her threats. A week later, after a long cross-examination at which she was pressed for the name of her husband's old friend and at which she maintained the most stubborn silence, together with a sort of stupid inertia, she returned to her cell in the evening and opened the veins of her wrist with a piece of glass which she had managed to hide.