"There's better reason to argue that the American never did it," retorted the judge.

"What reason?"

"The woman ran away, didn't she? And the American didn't. If he had killed this man, do you think anything would have brought him back here for that cloak and bag?"

"A good point," nodded the chief. "We can't be sure of the murderer—yet, but we can be reasonably sure it's murder."

Still the judge was unconvinced. "If it's murder, how do you account for the singed eyebrows? How did the murderer get so near?"

"I answer as you did: 'Ask the woman.' She knows."

"Ah, yes, she knows," reflected the commissary. "And, gentlemen, all our talk brings us back to this, we must find that woman."

At half past one Gibelin appeared to announce the arrest of Kittredge. He had tried vainly to get from the American some clew to the owner of cloak and bag, but the young man had refused to speak and, with sullen indifference, had allowed himself to be locked up in the big room at the depot.

"I'll see what I can squeeze out of him in the morning," said Hauteville grimly. There was no judge in the parquet who had his reputation for breaking down the resistance of obstinate prisoners.

"You've got your work cut out," snapped the detective. "He's a stubborn devil."

In the midst of these perplexities and technicalities a note was brought in for M. Pougeot. The commissary glanced at it quickly and then, with a word of excuse, left the room, returning a few minutes later and whispering earnestly to M. Simon.

"You say he is here?" exclaimed the latter. "I thought he was sailing for——"

M. Pougeot bent closer and whispered again.

"Paul Coquenil!" exclaimed the chief. "Why, certainly, ask him to come in."

A moment later Coquenil entered and all rose with cordial greetings, that is, all except Gibelin, whose curt nod and suspicious glances showed that he found anything but satisfaction in the presence of this formidable rival.

"My dear Coquenil!" said Simon warmly. "This is like the old days! If you were only with us now what a nut there would be for you to crack!"

"So I hear," smiled M. Paul, "and—er—the fact is, I have come to help you crack it." He spoke with that quiet but confident seriousness which always carried conviction, and M. Simon and the judge, feeling the man's power, waited his further words with growing interest; but Gibelin blinked his small eyes and muttered under his breath: "The cheek of the fellow!"

"As you know," explained Coquenil briefly, "I resigned from the force two years ago. I need not go into details; the point is, I now ask to be taken back. That is why I am here."

"But, my dear fellow," replied the chief in frank astonishment, "I understood that you had received a magnificent offer with——"

"Yes, yes, I have."

"With a salary of a hundred thousand francs?"

"It's true, but—I have refused it."

Simon and Hauteville looked at Coquenil incredulously. How could a man refuse a salary of a hundred thousand francs? The commissary watched his friend with admiration, Gibelin with envious hostility.

"May I ask why you have refused it?" asked the chief.

"Partly for personal reasons, largely because I want to have a hand in this case."

Gibelin moved uneasily.

"You think this case so interesting?" put in the judge.

"The most interesting I have ever known," answered the other, and then he added with all the authority of his fine, grave face: "It's more than interesting, it's the most important criminal case Paris has known for three generations."

Again they stared at him.

"My dear Coquenil, you exaggerate," objected M. Simon. "After all, we have only the shooting of a billiard player."

M. Paul shook his head and replied impressively: "The billiard player was a pawn in the game. He became troublesome and was sacrificed. He is of no importance, but there's a greater game than billiards here with a master player and—I'm going to be in it."

"Why do you think it's a great game?" questioned the judge.

"Why do I think anything? Why did I think a commonplace pickpocket at the Bon Marche was a notorious criminal, wanted by two countries? Why did I think we should find the real clew to that Bordeaux counterfeiting gang in a Passy wine shop? Why did I think it necessary to-night to be on the cab this young American took and not behind it in another cab?" He shot a quick glance at Gibelin. "Because a good detective knows certain things before he can prove them and acts on his knowledge. That is what distinguishes him from an ordinary detective."

"Meaning me?" challenged Gibelin.

"Not at all," replied M. Paul smoothly. "I only say that——"

"One moment," interrupted M. Simon. "Do I understand that you were with the driver who took this American away from here to-night?"

Coquenil smiled. "I was not with the driver, I was the driver and I had the honor of receiving five francs from my distinguished associate." He bowed mockingly to Gibelin and held up a silver piece. "I shall keep this among my curiosities."

"It was a foolish trick, a perfectly useless trick," declared Gibelin, furious.

"Perhaps not," answered the other with aggravating politeness; "perhaps it was a rather nice coup leading to very important results."

"Huh! What results?"

"Yes. What results?" echoed the judge.

"Let me ask first," replied Coquenil deliberately, "what you regard as the most important thing to be known in this case just now?"

"The name of the woman," answered Hauteville promptly.

"Parbleu!" agreed the commissary.

"Then the man who gives you this woman's name and address will render a real service?"

"A service?" exclaimed Hauteville. "The whole case rests on this woman. Without her, nothing can be understood."

"So it would be a good piece of work," continued Coquenil, "if a man had discovered this name and address in the last few hours with nothing but his wits to help him; in fact, with everything done to hinder him." He looked meaningly at Gibelin.

"Come, come," interrupted the chief, "what are you driving at?"

"At this, I have the woman's name and address."

"Impossible!" they cried.

"I got them by my own efforts and I will give them up on my own terms." He spoke with a look of fearless purpose that M. Simon well remembered from the old days.

"A thousand devils! How did you do it?" cried Simon.

"I watched the American in the cab as he leaned forward toward the lantern light and I saw exactly what he was doing. He opened the lady's bag and cut out a leather flap that had her name and address stamped on it."

"No," contradicted Gibelin, "there was no name in the bag. I examined it myself."

"The name was on the under side of the flap," laughed the other, "in gilt letters."

Gibelin's heart sank.

"And you took this flap from the American?" asked M. Simon.

"No, no! Any violence would have brought my colleague into the thing, for he was close behind, and I wanted this knowledge for myself."

"What did you do?" pursued the chief.

"I let the young man cut the flap into small pieces and drop them one by one as we drove through dark little streets. And I noted where he dropped the pieces. Then I drove back and picked them up, that is, all but two."

"Marvelous!" muttered Hauteville.

"I had a small searchlight lantern to help me. That was one of the things I took from my desk," he added to Pougeot.

"And these pieces of leather with the name and address, you have them?" continued the chief.

"I have them."

"With you?"

"Yes."

"May I see them?"

"Certainly. If you will promise to respect them as my personal property?"

Simon hesitated. "You mean—" he frowned, and then impatiently: "Oh, yes, I promise that."

Coquenil drew an envelope from his breast pocket and from it he took a number of white-leather fragments. And he showed the chief that most of these fragments were stamped in gold letters or parts of letters.

"I'm satisfied," declared Simon after examining several of the fragments and returning them. "Bon Dieu!" he stormed at Gibelin. "And you had that bag in your hands!"

Gibelin sat silent. This was the wretchedest moment in his career.

"Well," continued the chief, "we must have these pieces of leather. What are your terms?"

"I told you," said Coquenil, "I want to be put back on the force. I want to handle this case."

M. Simon thought a moment. "That ought to be easily arranged. I will see the prefet de police about it in the morning."

But the other demurred. "I ask you to see him to-night. It's ten minutes to his house in an automobile. I'll wait here."

The chief smiled. "You're in a hurry, aren't you? Well, so are we. Will you come with me, Hauteville?"

"If you like."

"And I'll go, if you don't mind," put in the commissary. "I may have some influence with the prefet."

"He won't refuse me," declared Simon. "After all, I am responsible for the pursuit of criminals in this city, and if I tell him that I absolutely need Paul Coquenil back on the force, as I do, he will sign the commission at once. Come, gentlemen."

A moment later the three had hurried off, leaving Coquenil and Gibelin together.

"Have one?" said M. Paul, offering his cigarette case.

"Thanks," snapped Gibelin with deliberate insolence, "I prefer my own."

"There's no use being ugly about it," replied the other good-naturedly, as he lighted a cigarette. His companion did the same and the two smoked in silence, Gibelin gnawing savagely at his little red mustache.

"See here," broke in the latter, "wouldn't you be ugly if somebody butted into a case that had been given to you?"

"Why," smiled Coquenil, "if he thought he could handle it better than I could, I—I think I'd let him try."



Then there was another silence, broken presently by Gibelin.

"Do you imagine the prefet de police is going to stand being pulled out of bed at three in the morning just because Paul Coquenil wants something? Well, I guess not."

"No? What do you think he'll do?" asked Coquenil.

"Do? He'll tell those men they are three idiots, that's what he'll do. And you'll never get your appointment. Bet you five louis you don't."

M. Paul shook his head. "I don't want your money."

"Bon sang! You think the whole police department must bow down to you."

"It's not a case of bowing down to me, it's a case of needing me."

"Huh!" snorted the other. "I'm going to walk around." He rose and moved toward the door. Then he turned sharply: "Say, how much did you pay that driver?"

"Ten louis. It was cheap enough. He might have lost his place."

"You think it's a great joke on me because I paid you five francs? Don't forget that it was raining and dark and you had that rubber cape pulled up over half your face, so it wasn't such a wonderful disguise."

"I didn't say it was."

"Anyhow, I'll get square with you," retorted the other, exasperated by M. Paul's good nature. "The best men make mistakes and look out that you don't make one."

"If I do, I'll call on you for help."

"And if you do, I'll take jolly good care that you don't get it," snarled the other.

"Nonsense!" laughed Coquenil. "You're a good soldier, Gibelin; you like to kick and growl, but you do your work. Tell you what I'll do as soon as I'm put in charge of this case. Want to know what I'll do?"

"Well?"

"I'll have to set you to work on it. Ha, ha! Upon my soul, I will."

"You'd better look out," menaced the red-haired man with an ugly look, "or I'll do some work on this case you'll wish I hadn't done." With this he flung himself out of the room, slamming the door behind him.

"What did he mean by that?" muttered M. Paul, and he sat silent, lost in thought, until the others returned. In a glance, he read the answer in their faces.

"It's all right," said the chief.

"Congratulations, old friend," beamed Pougeot, squeezing Coquenil's hand.

"The prefet was extremely nice," added M. Hauteville; "he took our view at once."

"Then my commission is signed?"

"Precisely," answered the chief; "you are one of us again, and—I'm glad."

"Thank you, both of you," said M. Paul with a quiver of emotion.

"I give you full charge of this case," went on M. Simon, "and I will see that you have every possible assistance. I expect you to be on deck to-morrow morning."

Coquenil hesitated a moment and then, with a flash of his tireless energy, he said: "If it's all the same to you, chief, I'll go on deck to-night—now."



CHAPTER VI

THE WEAPON

Right across from the Ansonia on the Rue Marboeuf was a little wine shop that remained open all night for the accommodation of cab drivers and belated pedestrians and to this Coquenil and the commissary now withdrew. Before anything else the detective wished to get from M. Pougeot his impressions of the case. And he asked Papa Tignol to come with them for a fortifying glass.

"By the way," said the commissary to Tignol when they were seated in the back room, "did you find out how that woman left the hotel without her wraps and without being seen?"

The old man nodded. "When she came out of the telephone booth she slipped on a long black rain coat that was hanging there. It belonged to the telephone girl and it's missing. The rain coat had a hood to it which the woman pulled over her head. Then she walked out quietly and no one paid any attention to her."

"Good work, Papa Tignol," approved Coquenil.

"It's you, M. Paul, who have done good work this night," chuckled Tignol. "Eh! Eh! What a lesson for Gibelin!"

"The brute!" muttered Pougeot.

Then they turned to the commissary's report of his investigation, Coquenil listening with intense concentration, interrupting now and then with a question or to consult the rough plan drawn by Pougeot.

"Are you sure there is no exit from the banquet room and from these private rooms except by the corridor?" he asked.

"They tell me not."

"So, if the murderer went out, he must have passed Joseph?"

"Yes."

"And the only persons who passed Joseph were the woman and this American?"

"Exactly."

"Too easy!" he muttered. "Too easy!"

"What do you mean?"

"That would put the guilt on one or the other of those two?"

"Apparently."

"And end the case?"

"Why—er——"

"Yes, it would. A case is ended when the murderer is discovered. Well, this case is not ended, you can be sure of that. The murderer I am looking for is not that kind of a murderer. To begin with, he's not a fool. If he made up his mind to shoot a man in a private room he would know exactly what he was doing and exactly how he was going to escape."

"But the facts are there—I've given them to you," retorted the commissary a little nettled.

Coquenil shook his head.

"My dear Lucien, you have given me some of the facts; before morning I hope we'll have others and—hello!"

He stopped abruptly to look at a comical little man with a very large mouth, the owner of the place, who had been hovering about for some moments as if anxious to say something.

"What is it, my friend?" asked Coquenil good-naturedly.

At this the proprietor coughed in embarrassment and motioned to a prim, thin-faced woman in the front room who came forward with fidgety shyness, begging the gentlemen to forgive her if she had done wrong, but there was something on her conscience and she couldn't sleep without telling it.

"Well?" broke in Pougeot impatiently, but Coquenil gave the woman a reassuring look and she went on to explain that she was a spinster living in a little attic room of the next house, overlooking the Rue Marboeuf. She worked as a seamstress all day in a hot, crowded atelier, and when she came home at night she loved to go out on her balcony, especially these fine summer evenings. She would stand there and brush her hair while she watched the sunset deepen and the swallows circle over the chimney tops. It was an excellent thing for a woman's hair to brush it a long time every night; she always brushed hers for half an hour—that was why it was so thick and glossy.

"But, my dear woman," smiled Coquenil, "what has that to do with me? I have very little hair and no time to brush it."

The seamstress begged his pardon, the point was that on the previous evening, just as she had nearly finished brushing her hair, she suddenly heard a sound like a pistol shot from across the street, and looking down, she saw a glittering object thrown from a window. She saw it distinctly and watched where it fell beyond the high wall that separated the Ansonia Hotel from an adjoining courtyard. She had not thought much about it at the moment, but, having heard that something dreadful had happened——

Coquenil could contain himself no longer and, taking the woman's arm, he hurried her to the door.

"Now," he said, "show me just where you saw this glittering object thrown over the wall."

"There," she replied, pointing, "it lies to the left of that heavy doorway on the courtyard stones. I could see it from my balcony."



"Wait!" and, speaking to Tignol in a low tone, M. Paul gave him quick instructions, whereupon the old man hurried across the street and pulled the bell at the doorway indicated.

"Is he going to see what it was?" asked the spinster eagerly.

"Yes, he is going to see what it was," and at that moment the door swung open and Papa Tignol disappeared within.

"Did you happen to see the person who threw this thing?" continued M. Paul gently.

"No, but I saw his arm."

Coquenil gave a start of satisfaction. "His arm? Then a man threw it?"

"Oh, yes, I saw his black coat sleeve and his white cuff quite plainly."

"But not his face?"

"No, only the arm."

"Do you remember the window from which he threw this object?" The detective looked at her anxiously.

"Yes, indeed, it is easy to remember; it's the end window, on the first floor of the hotel. There!"

Coquenil felt a thrill of excitement, for, unless he had misunderstood the commissary's diagram, the seamstress was pointing not to private room Number Six, but to private room Number Seven!

"Lucien!" he called, and, taking his friend aside, he asked: "Does that end window on the first floor belong to Number Six or Number Seven?"

"Number Seven."

"And the window next to it?"

"Number Six."

"Are you sure?"

"Absolutely sure."

"Thanks. Just a moment," and he rejoined the seamstress.

"You are giving us great assistance," he said to her politely. "I shall speak of you to the chief."

"Oh, sir," she murmured in confusion.

"But one point is not quite clear. Just look across again. You see two open windows, the end window and the one next to it. Isn't it possible that this bright thing was thrown from the window next to the end one?"

"No, no."

"They are both alike and, both being open, one might easily make a mistake."

She shook her head positively. "I have made no mistake, it was the end window."

Just then Coquenil heard the click of the door opposite and, looking over, he saw Papa Tignol beckoning to him.

"Excuse me," he said and hurried across the street.

"It's there," whispered Tignol.

"The pistol?"

"Yes."

"You remembered what I told you?"

The old man looked hurt. "Of course I did. I haven't touched it. Nothing could make me touch it."

"Good! Papa Tignol, I want you to stay here until I come back. Things are marching along."

Again he rejoined the seamstress and, with his serious, friendly air, he began: "And you still think that shining object was thrown from the second window?"

"No, no! How stupid you are!" And then in confusion: "I beg a thousand pardons, I am nervous. I thought I told you plainly it was the end window."

"Thanks, my good woman," replied M. Paul. "Now go right back to your room and don't breathe a word of this to anyone."

"But," she stammered, "would monsieur be so kind as to say what the bright object was?"

The detective bent nearer and whispered mysteriously: "It was a comb, a silver comb!"

"Mon Dieu! A silver comb!" exclaimed the unsuspecting spinster.

"Now back to your room and finish brushing your hair," he urged, and the woman hurried away trembling with excitement.

A few moments later Coquenil and the commissary and Papa Tignol were standing in the courtyard near two green tubs of foliage plants between which the pistol had fallen. The doorkeeper of the house, a crabbed individual who had only become mildly respectful when he learned that he was dealing with the police, had joined them, his crustiness tempered by curiosity.

"See here," said the detective, addressing him, "do you want to earn five francs?" The doorkeeper brightened. "I'll make it ten", continued the other, "if you do exactly what I say. You are to take a cab, here is the money, and drive to Notre-Dame. At the right of the church is a high iron railing around the archbishop's house. In the railing is an iron gate with a night bell for Extreme Unction. Ring this bell and ask to see the sacristan Bonneton, and when he comes out give him this." Coquenil wrote hastily on a card. "It's an order to let you have a dog named Caesar—my dog—he's guarding the church with Bonneton. Pat Caesar and tell him he's going to see M. Paul, that's me. Tell him to jump in the cab and keep still. He'll understand—he knows more than most men. Then drive back here as quick as you can."

The doorkeeper touched his cap and departed.

Coquenil turned to Tignol. "Watch the pistol. When the doorkeeper comes back send him over to the hotel. I'll be there."

"Right," nodded the old man.

Then the detective said to Pougeot: "I must talk to Gritz. You know him, don't you?"

The commissary glanced at his watch. "Yes, but do you realize it's after three o'clock?"

"Never mind, I must see him. A lot depends on it. Get him out of bed for me, Lucien, and—then you can go home."

"I'll try," grumbled the other, "but what in Heaven's name are you going to do with that dog?"

"Use him," answered Coquenil.



CHAPTER VII

THE FOOTPRINTS

One of the great lessons Coquenil had learned in his long experience with mysterious crimes was to be careful of hastily rejecting any evidence because it conflicted with some preconceived theory. It would have been easy now, for instance, to assume that this prim spinster was mistaken in declaring that she had seen the pistol thrown from the window of Number Seven. That, of course, seemed most unlikely, since the shooting was done in Number Six, yet how account for the woman's positiveness? She seemed a truthful, well-meaning person, and the murderer might have gone into Number Seven after committing the crime. It was evidently important to get as much light as possible on this point. Hence the need of M. Gritz.

M. Herman Gritz was a short, massive man with hard, puffy eyes and thin black hair, rather curly and oily, and a rapacious nose. He appeared (having been induced to come down by the commissary) in a richly embroidered blue-silk house garment, and his efforts at affability were obviously based on apprehension.

Coquenil began at once with questions about private room Number Seven. We had reserved this room and what had prevented the person from occupying it? M. Gritz replied that Number Seven had been engaged some days before by an old client, who, at the last moment, had sent a petit bleu to say that he had changed his plans and would not require the room. The petit bleu did not arrive until after the crime was discovered, so the room remained empty. More than that, the door was locked.

"Locked on the outside?"

"Yes."

"With the key in the lock?"

"Yes."

"Then anyone coming along the corridor might have turned the key and entered Number Seven?"

"It is possible," admitted M. Gritz, "but very improbable. The room was dark, and an ordinary person seeing a door locked and a room dark——"

"We are not talking about an ordinary person," retorted the detective, "we are talking about a murderer. Come, we must look into this," and he led the way down the corridor, nodding to the policeman outside Number Six and stopping at the next door, the last in the line, the door to Number Seven.

"You know I haven't been in there yet." He glanced toward the adjoining room of the tragedy, then, turning the key in Number Seven, he tried to open the door.

"Hello! It's locked on the inside, too!"

"Tiens! You're right," said Gritz, and he rumpled his scanty locks in perplexity.

"Some one has been inside, some one may be inside now."

The proprietor shook his head and, rather reluctantly, went on to explain that Number Seven was different from the other private rooms in this, that it had a separate exit with separate stairs leading to an alleyway between the hotel and a wall surrounding it. A few habitues knew of this exit and used it occasionally for greater privacy. The alleyway led to a gate in the wall opening on the Rue Marboeuf, so a particularly discreet couple, let us say, could drive up to this gate, pass through the alleyway, and then, by the private stairs, enter Number Seven without being seen by anyone, assuming, of course, that they had a key to the alleyway door. And they could leave the restaurant in the same unobserved manner.

As Coquenil listened, his mouth drew into an ominous thin line and his deep eyes burned angrily.

"M. Gritz," he said in a cold, cutting voice, "you are a man of intelligence, you must be. This crime was committed last night about nine o'clock; it's now half past three in the morning. Will you please tell me how it happens that this fact of vital importance has been concealed from the police for over six hours?"

"Why," stammered the other, "I—I don't know."

"Are you trying to shield some one? Who is this man that engaged Number Seven?"

Gritz shook his head unhappily. "I don't know his name."

"You don't know his name?" thundered Coquenil.

"We have to be discreet in these matters," reasoned the other. "We have many clients who do not give us their names, they have their own reasons for that; some of them are married, and, as a man of the world, I respect their reserve." M. Gritz prided himself on being a man of the world. He had started as a penniless Swiss waiter and had reached the magnificent point where broken-down aristocrats were willing to owe him money and sometimes borrow it—and he appreciated the honor.

"But what do you call him?" persisted Coquenil. "You must call him something."

"In speaking to him we call him 'monsieur'; in speaking of him we call him 'the tall blonde.'"

"The tall blonde!" repeated M. Paul.

"Exactly. He has been here several times with a woman he calls Anita. That's all I know about it. Anyway, what difference does it make since he didn't come to-night?"

"How do you know he didn't come? He had a key to the alleyway door, didn't he?"

"Yes, but I tell you he sent a petit bleu."

The detective shrugged his shoulders. "Some one has been here and locked this door on the inside. I want it opened."

"Just a moment," trembled Gritz. "I have a pass key to the alleyway door. We'll go around."

"Make haste, then," and they started briskly through the halls, the proprietor assuring M. Paul that only a single key was ever given out for the alleyway door and this to none but trusted clients, who returned it the same night.

"Only a single key to the alleyway door," reflected, Coquenil.

"Yes."

"And your 'tall blonde' has it now?"

"I suppose so."

They left the hotel by the main entrance, and were just going around into Rue Marboeuf when the concierge from across the way met them with word that Caesar had arrived.

"Caesar?" questioned Gritz.

"He's my dog. Ph-h-eet! Ph-h-eet! Ah, here he is!" and out of the shadows the splendid animal came bounding. At his master's call he had made a mighty plunge and broken away from Papa Tignol's hold.

"Good old fellow!" murmured M. Paul, holding the dog's eager head with his two hands. "I have work for you, sir, to-night. Ah, he knows! See his eyes! Look at that tail! We'll show 'em, eh, Caesar?"

And the dog answered with delighted leaps.

"What are you going to do with him?" asked the proprietor.

"Make a little experiment. Do you mind waiting a couple of minutes? It may give us a line on this visitor to Number Seven."

"I'll wait," said Gritz.

"Come over here," continued the other. "I'll show you a pistol connected with this case. And I'll show it to the dog."

"For the scent? You don't think a dog can follow the scent from a pistol, do you?" asked the proprietor incredulously.

"I don't know. This dog has done wonderful things. He tracked a murderer once three miles across rough country near Liege and found him hidden in a barn. But he had better conditions there. We'll see."

They had entered the courtyard now and Coquenil led Caesar to the spot where the weapon lay still undisturbed.

"Cherche!" he ordered, and the dog nosed the pistol with concentrated effort. Then silently, anxiously, one would say, he darted away, circling the courtyard back and forth, sniffing the ground as he went, pausing occasionally or retracing his steps and presently stopping before M. Paul with a little bark of disappointment.

"Nothing, eh? Quite right. Give me the pistol, Papa Tignol. We'll try outside. There!" He pointed to the open door where the concierge was waiting. "Now then, cherche!"

In an instant Caesar was out in the Rue Marboeuf, circling again and again in larger and larger arcs, as he had been taught, back and forth, until he had covered a certain length of street and sidewalk, every foot of the space between opposite walls, then moving on for another length and then for another, looking up at his master now and then for a word of encouragement.



"It's a hard test," muttered Coquenil. "Footprints and weapons have lain for hours in a drenching rain, but—Ah!" Caesar had stopped with a little whine and was half crouching at the edge of the sidewalk, head low, eyes fiercely forward, body quivering with excitement. "He's found something!"

The dog turned with quick, joyous barks.

"He's got the scent. Now watch him," and sharply he gave the word: "Va!"

Straight across the pavement darted Caesar, then along the opposite sidewalk away from the Champs Elysees, running easily, nose down, past the Rue Francois Premier, past the Rue Clement-Marot, then out into the street again and stopping suddenly.

"He's lost it," mourned Papa Tignol.

"Lost it? Of course he's lost it," triumphed the detective. And turning to M. Gritz: "There's where your murderer picked up a cab. It's perfectly clear. No one has touched that pistol since the man who used it threw it from the window of Number Seven."

"You mean Number Six," corrected Gritz.

"I mean Number Seven. We know where the murderer took a cab, now we'll see where he left the hotel." And hurrying toward his dog, he called: "Back, Caesar!"

Obediently the dog trotted back along the trail, recrossing the street where he had crossed it before, and presently reaching the point where he had first caught the scent. Here he stopped, waiting for orders, eying M. Paul with almost speaking intelligence.

"A wonderful dog," admired Gritz. "What kind is he?"

"Belgian shepherd dog," answered Coquenil. "He cost me five hundred francs, and I wouldn't sell him for—well, I wouldn't sell him." He bent over and fondled the panting animal. "We wouldn't sell our best friend, would we, Caesar?"

Evidently Caesar did not think this the moment for sentiment; he growled impatiently, straining toward the scent.

"He knows there's work to be done and he's right." Then quickly he gave the word again and once more Caesar was away, darting back along the sidewalk toward the Champs Elysees, moving nearer and nearer to the houses and presently stopping at a gateway, against which he pressed and whined. It was a gateway in the wall surrounding the Ansonia Hotel.

"The man came out here," declared Coquenil, and, unlatching the gate, he looked inside, the dog pushing after him.

"Down Caesar!" ordered M. Paul, and unwillingly the ardent creature crouched at his feet.

The wall surrounding the Ansonia was of polished granite about six feet high, and between this wall and the hotel itself was a space of equal width planted with slim fir trees that stood out in decorative dignity against the gray stone.

"This is what you call the alleyway?" questioned Coquenil.

"Exactly."

From the pocket of his coat the detective drew a small electric lantern, the one that had served him so well earlier in the evening, and, touching a switch, he threw upon the ground a strong white ray; whereupon a confusion of footprints became visible, as if a number of persons had trod back and forth here.

"What does this mean?" he cried.

Papa Tignol explained shamefacedly: "We did it looking for the pistol; it was Gibelin's orders."

"Bon Dieu! What a pity! We can never get a clean print in this mess. But wait! How far along the alleyway did you look?"

"As far as that back wall. Poor Gibelin! He never thought of looking on the other side of it. Eh, eh!"

Coquenil breathed more freely. "We may be all right yet. Ah, yes," he cried, going quickly to this back wall where the alleyway turned to the right along the rear of the hotel. Again he threw his white light before him and, with a start of satisfaction, pointed to the ground. There, clearly marked, was a line of footprints, a single line, with no breaks or imperfections, the plain record on the rain-soaked earth that one person, evidently a man, had passed this way, going out.

"I'll send the dog first," said M. Paul. "Here, Caesar! Cherche!"

Once more the eager animal sprang forward, following slowly along the row of trees where the trail was confused, and then, at the corner, dashing ahead swiftly, only to stop again after a few yards and stand scratching uneasily at a closed door.

"That settles it," said Coquenil. "He has brought us to the alleyway door. Am I right?"

"Yes," nodded Gritz.

"The door that leads to Number Seven?"

"Yes."

"Open it," and, while the agitated proprietor searched for his pass key, the detective spoke to Tignol: "I want impressions of these footprints, the best you can take. Use glycerin with plaster of Paris for the molds. Take this one and these two and this and this. Understand?"

"Perfectly."

"Leave Caesar here while you go for what you need. Down, Caesar! Garde!"

The dog growled and went on guard forthwith.

"Now, we'll have a look inside."

The alleyway door stood open and, using his lantern with the utmost care, Coquenil went first, mounting the stairs slowly, followed by Gritz. At the top they came to a narrow landing and a closed door.

"This opens directly into Number Seven?" asked the detective.

"Yes."

"Is it usually locked or unlocked?"

"IT is always locked."

"Well, it's unlocked now," observed Coquenil, trying the knob. Then, flashing his lantern forward, he threw the door wide open. The room was empty.

"Let me turn up the electrics," said the proprietor, and he did so, showing furnishings like those in Number Six except that here the prevailing tint was pale blue while there it was pale yellow.

"I see nothing wrong," remarked M. Paul, glancing about sharply. "Do you?"

"Nothing."

"Except that this door into the corridor is bolted. It didn't bolt itself, did it?"

"No," sighed the other.

Coquenil thought a moment, then he produced the pistol found in the courtyard and examined it with extreme care, then he unlocked the corridor door and looked out. The policeman was still on guard before Number Six.

"I shall want to go in there shortly," said the detective. The policeman saluted wearily.

"Excuse me," ventured M. Gritz, "have you still much to do?"

"Yes," said the other dryly.

"It's nearly four and—I suppose you are used to this sort of thing, but I'm knocked out, I—I'd like to go to bed."

"By all means, my dear sir. I shall get on all right now if—oh, they tell me you make wonderful Turkish coffee here. Do you suppose I could have some?"

"Of course you can. I'll send it at once."

"You'll earn my lasting gratitude."

Gritz hesitated a moment and then, with an apprehensive look in his beady eyes, he said: "So you're going in there?" and he jerked his fat thumb toward the wall separating them from Number Six.

Coquenil nodded.

"To see if the ball from that," he looked with a shiver at the pistol, "fits in—in that?" Again he jerked his thumb toward the wall, beyond which the body lay.

"No, that is the doctor's business. Mine is more important. Good night!"

"Good night," answered Gritz and he waddled away down the corridor in his blue-silk garments, wagging his heavy head and muttering to himself: "More important than that! Mon Dieu!"



CHAPTER VIII

THROUGH THE WALL

Coquenil's examination of the pistol showed that it was a weapon of good make and that only a single shot had been fired from it; also that this shot had been fired within a few hours. Which, with the evidence of the seamstress and the dog, gave a strong probability that the instrument of the crime had been found. If the ball in the body corresponded with balls still in the pistol, this probability would become a practical certainty. And yet, the detective knit his brows. Suppose it was established beyond a doubt that this pistol killed the billiard player, there still remained the question how the shooting was accomplished. The murderer was in Number Seven, he could not and did not go into the corridor, for the corridor door was locked. But the billiard player was in Number Six, he was shot in Number Six, and he died in Number Six. How were these two facts to be reconciled? The seamstress's testimony alone might be put aside but not the dog's testimony. The murderer certainly remained in Number Seven.

Holding this conviction, the detective entered the room of the tragedy and turned up the lights, all of them, so that he might see whatever was to be seen. He walked back and forth examining the carpet, examining the walls, examining the furniture, but paying little heed to the body. He went to the open window and looked out, he went to the yellow sofa and sat down, finally he shut off the lights and withdrew softly, closing the door behind him. It was just as the commissary had said with the exception of one thing.

When he returned to Number Seven, M. Paul found that Gritz had kept his promise and sent him a pot of fragrant Turkish coffee, steaming hot, and a box of the choicest Egyptian cigarettes. Ah, that was kind! This was something like it! And, piling up cushions in the sofa corner, Coquenil settled back comfortably to think and dream. This was the time he loved best, these precious silent hours when the city slept and his mind became most active—this was the time when chiefly he received those flashes of inspiration or intuition that had so often and so wonderfully guided him.

For half an hour or so the detective smoked continuously and sipped the powdered delight of Stamboul, his gaze moving about the room in friendly scrutiny as if he would, by patience and good nature, persuade the walls or, chairs to give up their secret. Presently he took off his glasses and, leaning farther back against the cushions, closed his eyes in pleasant meditation. Or was it a brief snatch of sleep? Whichever it was, a discreet knock at the corridor door shortly ended it, and Papa Tignol entered to say that he had finished the footprint molds.

M. Paul roused himself with an effort and, sitting up, his elbow resting against the sofa back, motioned his associate to a chair.

"By the way," he asked, "what do you think of that?" He pointed to a Japanese print in a black frame that hung near the massive sideboard.

"Why," stammered Tignol, "I—I don't think anything of it."

"A rather interesting picture," smiled the other. "I've been studying it."

"A purple sea, a blue moon, and a red fish—it looks crazy to me," muttered the old agent.

Coquenil laughed at this candid judgment. "All the same, it has a bearing on our investigations."

"Diable!"

M. Paul reached for his glasses, rubbed them deliberately and put them on. "Papa Tignol," he said seriously, "I have come to a conclusion about this crime, but I haven't verified it. I am now going to give myself an intellectual treat."

"Wha-at?"

"I am going to prove practically whether my mind has grown rusty in the last two years."

"I wish you'd say things so a plain man can understand 'em," grumbled the other.

"You understand that we are in private room Number Seven, don't you? On the other side of that wall is private room Number Six where a man has just been shot. We know that, don't we? But the man who shot him was in this room, the little hair-brushing old maid saw the pistol thrown from this window, the dog found footprints coming from this room, the murderer went out through that door into the alleyway and then into the street. He couldn't have gone into the corridor because the door was locked on the outside."

"He might have gone into the corridor and locked the door after him," objected Tignol.

Coquenil shook his head. "He could have locked the door after him on the outside, not on the inside; but when we came in here, it was locked on the inside. No, sir, that door to the corridor has not been used this evening. The murderer bolted it on the inside when he entered from the alleyway and it wasn't unbolted until I unbolted it myself."

"Then how, in Heaven's name——"

"Exactly! How could a man in this room kill a man in the next room? That is the problem I have been working at for an hour. And I believe I have solved it. Listen. Between these rooms is a solid wooden partition with no door in it—no passageway of any kind. Yet the man in there is dead, we're sure of that. The pistol was here, the bullet went there—somehow. How did it go there? Think."

The detective paused and looked fixedly at the wall near the heavy sideboard. Tignol, half fascinated, stared at the same spot, and then, as a new idea took form in his brain, he blurted out: "You mean it went through the wall?"

"Is there any other way?"

The old man laid a perplexed forefinger along his illuminated nose. "But there is no hole—through the wall," he muttered.

"There is either a hole or a miracle. And between the two, I conclude that there is a hole which we haven't found yet."

"It might be back of that sideboard," ventured the other doubtfully.

But M. Paul disagreed. "No man as clever as this fellow would have moved a heavy piece covered with plates and glasses. Besides, if the sideboard had been moved, there would be marks on the floor and there are none. Now you understand why I'm interested in that Japanese print."

Tignol sprang to his feet, then checked himself with a half-ashamed smile.

"You're mocking me, you've looked behind the picture."

Coquenil shook his head solemnly. "On my honor, I have not been near the picture, I know nothing about the picture, but unless there is some flaw in my reasoning——"

"I'll give my tongue to the cats to eat!" burst out the other, "if ever I saw a man lie on a sofa and blow blue circles in the air and spin pretty theories about what is back of a picture when——"

"When what?"

"When all he had to do for proof was to reach over and—and lift the darn thing off its nail."

Coquenil smiled. "I've thought of that," he drawled, "but I like the suspense. Half the charm of life is in suspense, Papa Tignol. However, you have a practical mind, so go ahead, lift it off."

The old man did not wait for a second bidding, he stepped forward quickly and took down the picture.

"Tonnere de Dieu!" he cried. "It's true! There are two holes."

Sure enough, against the white wall stood out not one but two black holes about an inch in diameter and something less than three inches apart. Around the left hole, which was close to the sideboard, were black dots sprinkled over the painted woodwork like grains of pepper.

"Powder marks!" muttered Coquenil, examining the hole. "He fired at close range as Martinez looked into this room from the other side. Poor chap! That's how he was shot in the eye." And producing a magnifying glass, the detective made a long and careful examination of the holes while Papa Tignol watched him with unqualified disgust.

"Asses! Idiots! That's what we are," muttered the old man. "For half an hour we were in that room, Gibelin and I, and we never found those holes."

"They were covered by the sofa hangings."

"I know, we shook those hangings, we pressed against them, we did everything but look behind them. See here, did you look behind them?"

"No, but I saw something on the floor that gave me an idea."

"Ah, what was that?"

"Some yellowish dust. I picked up a little of it. There." He unfolded a paper and showed a few grains of coarse brownish powder. "You see there are only board partitions between these rooms, the boards are about an inch thick, so a sharp auger would make the holes quickly. But there would be dust and chips."

"Of course."

"Well, this is some of the dust. The woman probably threw the chips out of the window."

"The woman?"

Coquenil nodded. "She helped Martinez while he bored the holes."

Tignol listened in amazement. "You think Martinez bored those holes? The man who was murdered?"

"Undoubtedly. The spirals from the auger blade inside the holes show plainly that the boring was done from Number Six toward Number Seven. Take the glass and see for yourself."

Tignol took the glass and studied the hole. Then he turned, shaking his head. "You're a fine detective, M. Paul, but I was a carpenter for six years before I went on the force and I know more about auger holes than you do. I say you can't be sure which side of the wall this hole was bored from. You talk about spirals, but there's no sense in that. They're the same either way. You might tell by the chipping, but this is hard wood covered with thick enamel, so there's apt to be no chipping. Anyhow, there's none here. We'll see on the other side."

"All right, we'll see," consented Coquenil, and they went around into Number Six.

The old man drew back the sofa hangings and exposed two holes exactly like the others—in fact, the same holes. "You see," he went on, "the edges are clean, without a sign of chipping. There is no more reason to say that these holes were bored this side than from that."

M. Paul made no reply, but going to the sofa he knelt down by it, and using his glass, proceeded to go over its surface with infinite care.

"Turn up all the lights," he said. "That's better," and he continued his search. "Ah!" he cried presently. "You think there is no reason to say the holes were bored from this side. I'll give you a reason. Take this piece of white paper and make me prints of his boot heels." He pointed to the body. "Take the whole heel carefully, then the other one, get the nail marks, everything. That's right. Now cut out the prints. Good! Now look here. Kneel down. Take the glass. There on the yellow satin, by the tail of that silver bird. Do you see? Now compare the heel prints."

Papa Tignol knelt down as directed and examined the sofa seat, which was covered with a piece of Chinese embroidery.

"Sapristi! You're a magician!" he cried in great excitement.

"No," replied Coquenil, "it's perfectly simple. These holes in the wall are five feet above the floor. And I'm enough of a carpenter, Papa Tignol," he smiled, "to know that a man cannot work an auger at that height without standing on something. And here was the very thing for him to stand on, a sofa just in place. So, if Martinez bored these holes, he stood on this sofa to do it, and, in that case, the marks of his heels must have remained on the delicate satin. And here they are."

"Yes, here they are, nails and all," admitted Tignol admiringly. "I'm an old fool, but—but——"

"Well?"

"Tell me why Martinez did it."

Coquenil's face darkened. "Ah, that's the question. We'll know that when we talk to the woman."

The old man leaned forward eagerly: "Why do you think the woman helped him?"

"Somebody helped him or the chips would still be there, somebody held back those hangings while he worked the auger, and somebody carried the auger away."

Tignol pondered this, a moment, then, his face brightening: "Hah! I see! The sofa hangings were held back when the shot came, then they fell into place and covered the holes?"

"That's it," replied the detective absently.

"And the man in Number Seven, the murderer, lifted that picture from its nail before shooting and then put it back on the nail after shooting?"

"Yes, yes," agreed M. Paul. Already he was far away on a new line of thought, while the other was still grappling with his first surprise.

"Then this murderer must have known that the billiard player was going to bore these holes," went on Papa Tignol half to himself. "He must have been waiting in Number Seven, he must have stood there with his pistol ready while the holes were coming through, he must have let Martinez finish one hole and then bore the other, he must have kept Number Seven dark so they couldn't see him——"

"A good point, that," approved Coquenil, paying attention. "He certainly kept Number Seven dark."

"And he probably looked into Number Six through the first hole while Martinez was boring the second. I suppose you can tell which of the two holes was bored first?" chuckled Tignol.

M. Paul started, paused in a flash of thought, and then, with sudden eagerness: "I see, that's it!"

"What's it?" gasped the other.

"He bored this hole first," said Coquenil rapidly, "it's the right-hand one when you're in this room, the left-hand one when you're in Number Seven. As you say, the murderer looked through the first hole while he waited for the second to be bored; so, naturally, he fired through the hole where his eye was. That was his first great mistake."

Tignol screwed up his face in perplexity. "What difference does it make which hole the man fired through so long as he shot straight and got away?"

"What difference? Just this difference, that, by firing through the left-hand hole, he has given us precious evidence, against him."

"How?"

"Come back into the other room and I'll show you." And, when they had returned to Number Seven, he continued: "Take the pistol. Pretend you are the murderer. You've been waiting your moment, holding your breath on one side of the wall while the auger grinds through from the other. The first hole is finished. You see the point of the auger as it comes through the second, now the wood breaks and a length of turning steel shoves toward you. You grip your pistol and look through the left-hand hole, you see the woman holding back the curtains, you see Martinez draw out the auger from the right-hand hole and lay it down. Now he leans forward, pressing his face to the completed eyeholes, you see the whites of his eyes, not three inches away. Quick! Pistol up! Ready to fire! No, no, through the left-hand hole where he fired."

"Sacre matin!" muttered Tignol, "it's awkward aiming through this left-hand hole."

"Ah!" said the detective. "Why is it awkward?"

"Because it's too near the sideboard. I can't get my eye there to sight along the pistol barrel."

"You mean your right eye?"

"Of course."

"Could you get your left eye there?"

"Yes, but if I aimed with my left eye I'd have to fire with my left hand and I couldn't hit a cow that way."

Coquenil looked at Tignol steadily. "You could if you were a left-handed man."

"You mean to say—" The other stared.

"I mean to say that this man, at a critical moment, fired through that awkward hole near the sideboard when he might just as well have fired through the other hole away from the sideboard. Which shows that it was an easy and natural thing for him to do, consequently——"

"Consequently," exulted the old man, "we've got to look for a left-handed murderer, is that it?"

"What do you think?" smiled the detective.

Papa Tignol paused, and then, bobbing his head in comical seriousness: "I think, if I were this man, I'd sooner have the devil after me than Paul Coquenil."



CHAPTER IX

COQUENIL MARKS HIS MAN

It was nearly four o'clock when Coquenil left the Ansonia and started up the Champs Elysees, breathing deep of the early morning air. The night was still dark, although day was breaking in the east. And what a night it had been! How much had happened since he walked with his dog to Notre-Dame the evening before! Here was the whole course of his life changed, yes, and his prospects put in jeopardy by this extraordinary decision. How could he explain what he had done to his wise old mother? How could he unsay all that he had said to her a few days before when he had shown her that this trip to Brazil was quite for the best and bade her a fond farewell? Could he explain it to anyone, even to himself? Did he honestly believe all the plausible things he had said to Pougeot and the others about this crime? Was it really the wonderful affair he had made out? After all, what had he acted on? A girl's dream and an odd coincidence. Was that enough? Was that enough to make a man alter his whole life and face extraordinary danger? Was it enough?

Extraordinary danger! Why did this sense of imminent peril haunt him and fascinate him? What was there in this crime that made it different from many other crimes on which he had been engaged? Those holes through the wall? Well, yes, he had never seen anything quite like that. And the billiard player's motive in boring the holes and the woman's role and the intricacy and ingenuity of the murderer's plan—all these offered an extraordinary problem. And it certainly was strange that this candle-selling girl with the dreams and the purplish eyes had appeared again as the suspected American's sweetheart! He had heard this from Papa Tignol, and how Alice had stood ready to brave everything for her lover when Gibelin marched him off to prison. Poor Gibelin!

So Coquenil's thoughts ran along as he neared the Place de l'Etoile. Well, it was too late to draw back. He had made his decision and he must abide by it, his commission was signed, his duty lay before him. By nine o'clock he must be at the Palais de Justice to report to Hauteville. No use going home. Better have a rubdown and a cold plunge at the haman, then a turn on the mat with the professional wrestler, and then a few hours sleep. That would put him in shape for the day's work with its main business of running down this woman in the case, this lady of the cloak and leather bag, whose name and address he fortunately had. Ah, he looked forward to his interview with her! And he must prepare for it!

Coquenil was just glancing about for a cab to the Turkish bath place, in fact he was signaling one that he saw jogging up the Avenue de la Grande Armee, when he became aware that a gentleman was approaching him with the intention of speaking. Turning quickly, he saw in the uncertain light a man of medium height with a dark beard tinged with gray, wearing a loose black cape overcoat and a silk hat. The stranger saluted politely and said with a slight foreign accent: "How are you, M. Louis? I have been expecting you."

The words were simple enough, yet they contained a double surprise for Coquenil. He was at a loss to understand how he could have been expected here where he had come by the merest accident, and, certainly, this was the first time in twenty years that anyone, except his mother, had addressed him as Louis. He had been christened Louis Paul, but long ago he had dropped the former name, and his most intimate friends knew him only as Paul Coquenil.

"How do you know that my name is Louis?" answered the detective with a sharp glance.

"I know a great deal about you," answered the other, and then with significant emphasis: "I know that you are interested in dreams. May I walk along with you?"

"You may," said Coquenil, and at once his keen mind was absorbed in this new problem. Instinctively he felt that something momentous was preparing.

"Rather clever, your getting on that cab to-night," remarked the other.

"Ah, you know about that?"

"Yes, and about the Rio Janeiro offer. We want you to reconsider your decision." His voice was harsh and he spoke in a quick, brusque way, as one accustomed to the exercise of large authority.

"Who, pray, are 'we'?" asked the detective.

"Certain persons interested in this Ansonia affair."

"Persons whom you represent?"

"In a way."

"Persons who know about the crime—I mean, who know the truth about it?"

"Possibly."

"Hm! Do these persons know what covered the holes in Number Seven?"

"A Japanese print."

"And in Number Six?"

"Some yellow hangings."

"Ah!" exclaimed Coquenil in surprise. "Do they know why Martinez bored these holes?"

"To please the woman," was the prompt reply.

"Did she want Martinez killed?"

"No."

"Then why did she want the holes bored?"

"She wanted to see into Number Seven."

It was extraordinary, not only the man's knowledge but his unaccountable frankness. And more than ever the detective was on his guard.

"I see you know something about the affair," he said dryly. "What do you want with me?"

"The persons I represent——"

"Say the person you represent," interrupted Coquenil. "A criminal of this type acts alone."

"As you like," answered the other carelessly. "Then the person I represent wishes you to withdraw from this case."

The message was preposterous, the manner of its delivery fantastic, yet there was something vaguely formidable in the stranger's tone, as if a great person had spoken, one absolutely sure of himself and of his power to command.

"Naturally," retorted Coquenil.

"Why do you say naturally?"

"It's natural for a criminal to wish that an effort against him should cease. Tell your friend or employer that I am only mildly interested in his wishes."

He spoke with deliberate hostility, but the dark-bearded man answered, quite unruffled: "Ah, I may be able to heighten your interest."

"Come, come, sir, my time is valuable."

The stranger drew from his coat pocket a large thick envelope fastened with an elastic band and handed it to the detective. "Whatever your time is worth," he said in a rasping voice, "I will pay for it. Please look at this."

Coquenil's curiosity was stirred. Here was no commonplace encounter, at least it was a departure from ordinary criminal methods. Who was this supercilious man? How dared he come on such an errand to him, Paul Coquenil? What desperate purpose lurked behind his self-confident mask? Could it be that he knew the assassin or—or was he the assassin?

Wondering thus, M. Paul opened the tendered envelope and saw that it contained a bundle of thousand-franc notes.

"There is a large sum here," he remarked.

"Fifty thousand francs. It's for you, and as much more will be handed you the day you sail for Brazil. Just a moment—let me finish. This sum is a bonus in addition to the salary already fixed. And, remember, you have a life position there with a brilliant chance of fame. That is what you care about, I take it—fame; it is for fame you want to follow up this crime."

Coquenil snapped his fingers. "I don't care that for fame. I'm going to work out this case for the sheer joy of doing it."

"You will never work out this case!" The man spoke so sternly and with such a menacing ring in his voice that M. Paul felt a chill of apprehension.

"Why not?" he asked.

"Because you will not be allowed to; it's doubtful if you could work it out, but there's a chance that you could and we don't purpose to take that chance. You're a free agent, you can persist in this course, but if you do——"

He paused as if to check too vehement an utterance, and M. Paul caught a threatening gleam in his eyes that he long remembered.

"Why?"

"If you do, you will be thwarted at every turn, you will be made to suffer in ways you do not dream of, through those who are dear to you, through your dog, through your mother——"

"You dare—" cried Coquenil.

"We dare anything," flashed the stranger. "I'm daring something now, am I not? Don't you suppose I know what you are thinking? Well, I take the risk because—because you are intelligent."

There was something almost captivating in the very arrogance and recklessness of this audacious stranger. Never in all his experience had Coquenil known a criminal or a person directly associated with crime, as this man must be, to boldly confront the powers of justice. Undoubtedly, the fellow realized his danger, yet he deliberately faced it. What plan could he have for getting away once his message was delivered? It must be practically delivered already, there was nothing more to say, he had offered a bribe and made a threat. A few words now for the answer, the refusal, the defiance, and—then what? Surely this brusque individual did not imagine that he, Coquenil, would be simple enough to let him go now that he had him in his power? But wait! Was that true, was this man in his power?

As if answering the thought, the stranger said: "It is hopeless for you to struggle against our knowledge and our resources, quite hopeless. We have, for example, the fullest information about you and your life down to the smallest detail."

"Yes?" answered Coquenil, and a twinkle of humor shone in his eyes. "What's the name of my old servant?"

"Melanie."

"What's the name of the canary bird I gave her last week?"

"It isn't a canary bird, it's a bullfinch. And its name is Pete."

"Not bad, not at all bad," muttered the other, and the twinkle in his eyes faded.

"We know the important things, too, all that concerns you, from your forced resignation two years ago down to your talk yesterday with the girl at Notre-Dame. So how can you fight us? How can you shadow people who shadow you? Who watch your actions from day to day, from hour to hour? Who know exactly the moment when you are weak and unprepared, as I know now that you are unarmed because you left that pistol with Papa Tignol."

For a moment Coquenil was silent, and then: "Here's your money," he said, returning the envelope.

"Then you refuse?"

"I refuse."

"Stubborn fellow! And unbelieving! You doubt our power against you. Come, I will give you a glimpse of it, just the briefest glimpse. Suppose you try to arrest me. You have been thinking of it, now act. I'm a suspicious character, I ought to be investigated. Well, do your duty. I might point out that such an arrest would accomplish absolutely nothing, for you haven't the slightest evidence against me and can get none, but I waive that point because I want to show you that, even in so simple an effort against us as this, you would inevitably fail."

The man's impudence was passing all bounds. "You mean that I cannot arrest you?" menaced Coquenil.

"Precisely. I mean that with all your cleverness and with a distinct advantage in position, here on the Champs Elysees with policemen all about us, you cannot arrest me."

"We'll see about that," answered M. Paul, a grim purpose showing in his deep-set eyes.

"I say this in no spirit of bravado," continued the other with irritating insolence, "but so that you may remember my words and this warning when I am gone." Then, with a final fling of defiance: "This is the first time you have seen me, M. Coquenil, and you will probably never see me again, but you will hear from me. Now blow your whistle!"

Coquenil was puzzled. If this was a bluff, it was the maddest, most incomprehensible bluff that a criminal ever made. But if it was not a bluff? Could there be a hidden purpose here? Was the man deliberately making some subtle move in the game he was playing? The detective paused to think. They had come down the Champs Elysees, past the Ansonia, and were nearing the Rond Point, the best guarded part of Paris, where the shrill summons of his police call would be answered almost instantly. And yet he hesitated.

"There is no hurry, I suppose," said the detective. "I'd like to ask a question or two."

"As many as you please."

With all the strength of his mind and memory Coquenil was studying his adversary. That beard? Could it be false? And the swarthy tone of the skin which he noticed now in the improving light, was that natural? If not natural, then wonderfully imitated. And the hands, the arms? He had watched these from the first, noting every movement, particularly the left hand and the left arm, but he had detected nothing significant; the man used his hands like anyone else, he carried a cane in the right hand, lifted his hat with the right hand, offered the envelope with the right hand. There was nothing to show that he was not a right-handed man.

"I wonder if you have anything against me personally?" inquired M. Paul.

"On the contrary," declared the other, "we admire you and wish you well."

"But you threaten my dog?"

"If necessary, yes."

"And my mother?"

"If necessary."

The decisive moment had come, not only because Coquenil's anger was stirred by this cynical avowal, but because just then there shot around the corner from the Avenue Montaigne a large red automobile which crossed the Champs Elysees slowly, past the fountain and the tulip beds, and, turning into the Avenue Gabrielle, stopped under the chestnut trees, its engines throbbing. Like a flash it came into the detective's mind that the same automobile had passed them once before some streets back. Ah, here was the intended way of escape! On the front seat were two men, strong-looking fellows, accomplices, no doubt. He must act at once while the wide street was still between them.

"I ask because—" began M. Paul with his indifferent drawl, then swiftly drawing his whistle, he sounded a danger call that cut the air in sinister alarm. The stranger sprang away, but Coquenil was on him in a bound, clutching him by the throat and pressing him back with intertwining legs for a sudden fall. The bearded man saved himself by a quick turn, and with a great heave of his shoulders broke the detective's grip, then suddenly he attacked, smiting for the neck, not with clenched fist but with the open hand held sideways in the treacherous cleaving blow that the Japanese use when they strike for the carotid. Coquenil ducked forward, saving himself, but he felt the descending hand hard as stone on his shoulders.

"He struck with his right," thought M. Paul.

At the same moment he felt his adversary's hand close on his throat and rejoiced, for he knew the deadly Jitsu reply to this. Hardening his neck muscles until they covered the delicate parts beneath like bands of steel, the detective seized his enemy's extended arm in his two hands, one at the wrist, one at the elbow, and as his trained fingers sought the painful pressure points, his two free arms started a resistless torsion movement on the captured arm. There is no escape from this movement, no enduring its excruciating pain; to a man taken at such a disadvantage one of two things may happen. He may yield, and in that case he is hurled helpless over his adversary's shoulder, or he may resist, with the result that the tendons are torn from his lacerated arm and he faints in agony.

Such was the master hold gained by M. Paul in the first minute of the struggle; long and carefully he had practiced this coup with a wrestling professional. It never failed, it could not fail, and, in savage triumph, he prolonged his victory, slowly increasing the pressure, slowly as he felt the tendons stretching, the bones cracking in this helpless right arm. A few seconds more and the end would come, a few seconds more and—then a crashing, shattering pain drove through Coquenil's lower heart region, his arms relaxed, his hands relaxed, his senses dimmed, and he sank weakly to the ground. His enemy had done an extraordinary thing, had delivered a blow not provided for in Jitsu tactics. In spite of the torsion torture, he had swung his free arm under the detective's lifted guard, not in Yokohama style but in the best manner of the old English prize ring, his clenched fist falling full on the point of the heart, full on the unguarded solar-plexus nerves which God put there for the undoing of the vainglorious fighters. And Coquenil dropped like a smitten ox with this thought humming in his darkening brain: "It was the left that spoke then."



As he sank to the ground M. Paul tried to save himself, and seizing his opponent by the leg, he held him desperately with his failing strength; but the spasms of pain overcame him, his muscles would not act, and with a furious sense of helplessness and failure, he felt the clutched leg slipping from his grasp. Then, as consciousness faded, the brute instinct in him rallied in a last fierce effort and he bit the man deeply under the knee.

When Coquenil came to himself he was lying on the ground and several policemen were bending over him. He lifted his head weakly and looked about him. The stranger was gone. The automobile was gone. And it all came back to him in sickening memory, the flaunting challenge of this man, the fierce struggle, his own overconfidence, and then his crushing defeat. Ah, what a blow that last one was with the conquering left!

And suddenly it flashed through his mind that he had been outwitted from the first, that the man's purpose had not been at all what it seemed to be, that a hand-to-hand conflict was precisely what the stranger had sought and planned for, because—because—In feverish haste Coquenil felt in his breast pocket for the envelope with the precious leather fragments. It was not there. Then quickly he searched his other pockets. It was not there. The envelope containing the woman's name and address was gone.



CHAPTER X

GIBELIN SCORES A POINT

The next day all Paris buzzed and wondered about this Ansonia affair, as it was called. The newspapers printed long accounts of it with elaborate details, and various conjectures were made as to the disappearance of Martinez's fair companion. More or less plausible theories were also put forth touching the arrested American, prudently referred to as "Monsieur K., a well-known New Yorker." It was furthermore dwelt upon as significant that the famous detective, Paul Coquenil, had returned to his old place on the force for the especial purpose of working on this case. And M. Coquenil was reported to have already, by one of his brilliant strokes, secured a clew that would lead shortly to important revelations. Alas, no one knew under what distressing circumstances this precious clew had been lost!

Shortly before nine by the white clock over the columned entrance to the Palais de Justice, M. Paul passed through the great iron and gilt barrier that fronts the street and turning to the left, mounted the wide stone stairway. He had had his snatch of sleep at the haman, his rubdown and cold plunge, but not his intended bout with the wrestling professional. He had had wrestling enough for one day, and now he had come to keep his appointment with Judge Hauteville.

Two flights up the detective found himself in a spacious corridor off which opened seven doors leading to the offices of seven judges. Seven! Strange this resemblance to the fatal corridor at the Ansonia! And stranger still that Judge Hauteville's office should be Number Six!

Coquenil moved on past palace guards in bright apparel, past sad-faced witnesses and brisk lawyers of the court in black robes with amusing white bibs at their throats. And presently he entered Judge Hauteville's private room, where an amiable greffier asked him to sit down until the judge should arrive.

There was nothing in the plain and rather businesslike furnishings of this room to suggest the somber and sordid scenes daily enacted here. On the dull leather of a long table, covered with its usual litter of papers, had been spread the criminal facts of a generation, the sinister harvest of ignorance and vice and poverty. On these battered chairs had sat and twisted hundreds of poor wretches, innocent and guilty, petty thieves, shifty-eyed scoundrels, dull brutes of murderers, and occasionally a criminal of a higher class, summoned for the preliminary examinations. Here, under the eye of a bored guard, they had passed miserable hours while the judge, smiling or frowning, hands in his pockets, strode back and forth over the shabby red-and-green carpet putting endless questions, sifting out truth from falsehood, struggling against stupidity and cunning, studying each new case as a separate problem with infinite tact and insight, never wearying, never losing his temper, coming back again and again to the essential point until more than one stubborn criminal had broken down and, from sheer exhaustion, confessed, like the assassin who finally blurted out: "Well, yes, I did it. I'd rather be guillotined than bothered like this."

Such was Judge Hauteville, cold, patient, inexorable in the pursuit of truth. And presently he arrived.

"You look serious this morning," he said, remarking Coquenil's pale face.

"Yes," nodded M. Paul, "that's how I feel," and settling himself in a chair he proceeded to relate the events of the night, ending with a frank account of his misadventure on the Champs Elysees.

The judge listened with grave attention. This was a more serious affair than he had imagined. Not only was there no longer any question of suicide, but it was obvious that they were dealing with a criminal of the most dangerous type and one possessed of extraordinary resources.

"You believe it was the assassin himself who met you?" questioned Hauteville.

"Don't you?"

"I'm not sure. You think his motive was to get the woman's address?"

"Isn't that reasonable?"

Hauteville shook his head. "He wouldn't have risked so much for that. How did he know that you hadn't copied the name and given it to one of us—say to me?"

"Ah, if I only had," sighed the detective.

"How did he know that you wouldn't remember the name? Can't you remember it—at all?"

"That's what I've been trying to do," replied the other gloomily, "I've tried and tried, but the name won't come back. I put those pieces together and read the words distinctly, the name and the address. It was a foreign name, English I should say, and the street was an avenue near the Champs Elysees, the Avenue d'Eylau, or the Avenue d'Iena, I cannot be sure. I didn't fix the thing in my mind because I had it in my pocket, and in the work of the night it faded away."

"A great pity! Still, this man could neither have known that nor guessed it. He took the address from you on a chance, but his chief purpose must have been to impress you with his knowledge and his power."

Coquenil stared at his brown seal ring and then muttered savagely: "How did he know the name of that infernal canary bird?"

The judge smiled. "He has established some very complete system of surveillance that we must try to circumvent. For the moment we had better decide upon immediate steps."

With this they turned to a fresh consideration of the case. Already the machinery of justice had begun to move. Martinez's body and the weapon had been taken to the morgue for an autopsy, the man's jewelry and money were in the hands of the judge, and photographs of the scene of the tragedy would be ready shortly as well as plaster impressions of the alleyway footprints. An hour before, as arranged the previous night, Papa Tignol had started out to search for Kittredge's lodgings, since the American, when questioned by Gibelin at the prison, had obstinately refused to tell where he lived and an examination of his quarters was a matter of immediate importance.

It was not Papa Tignol, however, who was to furnish this information, but the discomfited Gibelin whose presence in the outer office was at this moment announced by the judge's clerk.

"Ask him to come in," said Hauteville, and a moment later Coquenil's fat, red-haired rival entered with a smile that made his short mustache fairly bristle in triumph.

"Ah, you have news for us!" exclaimed the judge.

Gibelin beamed. "I haven't wasted my time," he nodded. Then, with a sarcastic glance at Coquenil: "The old school has its good points, after all."

"No doubt," agreed Coquenil curtly.

"Although I am no longer in charge of this case," rasped the fat man, "I suppose there is no objection to my rendering my distinguished associate," he bowed mockingly to M. Paul, "such assistance as is in my power."

"Of course not," replied Hauteville.

"I happened to hear that this American has a room on the Rue Racine and I just looked in there."

"Ah!" said the judge, and Coquenil rubbed his glasses nervously. There is no detective big-souled enough not to tingle with resentment when he finds that a rival has scored a point.

"Our friend lives at the Hotel des Etrangers, near the corner of the Boulevard St. Michel," went on Gibelin. "I happened to be talking with the man who sent out the banquet invitations and he told me. M. Kittredge has a little room with a brick floor up six flights. And long! And black!" He rubbed his knees ruefully. "But it was worth the trouble. Ah, yes!" His small eyes brightened.

"You examined his things?"

"Pour sur! I spent an hour there. And talked the soul out of the chambermaid. A good-looking wench! And a sharp one!" he chuckled. "She knows the value of a ten-franc piece!"

"Well, well," broke in M. Paul, "what did you discover?"



Gibelin lifted his pudgy hands deprecatingly. "For one thing I discovered a photograph of the woman who was in Number Six with Martinez."

"The devil!" cried Coquenil.

"It is not of much importance, since already you have the woman's name and address." He shot a keen glance at his rival.

M. Paul was silent. What humiliation was this! No doubt Gibelin had heard the truth and was gloating over it!

"How do you know it is the woman's photograph?" questioned the judge.

"I'll tell you," replied Gibelin, delighted with his sensation. "It's quite a story. I suppose you know that when this woman slipped out of the Ansonia, she drove directly to the house where we arrested the American. You knew that?" He turned to Coquenil.

"No."

"Well, I happened to speak to the concierge there and she remembers perfectly a lady in an evening gown with a rain coat over it like the one this woman escaped in. This lady sent a note by the concierge up to the apartment of that she-dragon, the sacristan's wife, where M. Kittredge was calling on Alice."

"Ah! What time was that?"

"About a quarter to ten. The note was for M. Kittredge. It must have been a wild one, for he hurried down, white as a sheet, and drove off with the lady. Fifteen minutes later they stopped at his hotel and he went up to his room, two steps, at a time, while she waited in the cab. And Jean, the garcon, had a good look at her and he told Rose, the chambermaid, and she had a look and recognized her as the woman whose photograph she had often seen in the American's room."

"Ah, that's lucky!" rejoined the judge. "And you have this photograph?"

"No, but——"

"You said you found it?" put in Coquenil.

"I did, that is, I found a piece of it, a corner that wasn't burned."

"Burned?" cried the others.

"Yes," said Gibelin, "that's what Kittredge went upstairs for, to burn the photograph and a lot of letters—her letters, probably. The fireplace was full of fresh ashes. Rose says it was clean before he went up, so I picked out the best fragments—here they are." He drew a small package from his pocket, and opening it carefully, showed a number of charred or half-burned pieces of paper on which words in a woman's handwriting could be plainly read.

"More fragments!" muttered Coquenil, examining them. "It's in English. Ah, is this part of the photograph?" He picked out a piece of cardboard.

"Yes. You see the photographer's name is on it."

"Watts, Regent Street, London," deciphered the detective. "That is something." And, turning to the judge: "Wouldn't it be a good idea to send a man to London with this? You can make out part of a lace skirt and the tip of a slipper. It might be enough."

"That's true," agreed Hauteville.

"Whoever goes," continued Coquenil, "had better carry him the five-pound notes found on Martinez and see if he can trace them through the Bank of England. They often take the names of persons to whom their notes are issued."

"Excellent. I'll see to it at once," and, ringing for his secretary, the judge gave orders to this effect.

To all of which Gibelin listened with a mocking smile. "But why so much trouble," he asked, "when you have the woman's name and address already?"

"I had them and I—I lost them," acknowledged M. Paul, and in a few words he explained what had happened.

"Oh," sneered the other, "I thought you were a skillful wrestler."

"Come back to the point," put in Hauteville. "Had the chambermaid ever seen this lady before?"

"Yes, but not recently. It seems that Kittredge moved to the Hotel des Etrangers about seven months ago, and soon after that the lady came to see him. Rose says she came three times."

"Did she go to Kittredge's room?" put in Coquenil.

"Yes."

"Can the chambermaid describe her?" continued the judge.

"She says the lady was young and good-looking—that's about all she remembers."

"Hm! Have you anything else to report?"

Gibelin chuckled harshly. "I have kept the most important thing for the last. I'm afraid it will annoy my distinguished colleague even more than the loss of the leather fragments."

"Don't waste your sympathy," retorted Coquenil.

Gibelin gave a little snort of defiance. "I certainly won't. I only mean that your debut in this case hasn't been exactly—ha, ha!—well, not exactly brilliant."

"Here, here!" reproved the judge. "Let us have the facts."

"Well," continued the red-haired man, "I have found the owner of the pistol that killed Martinez."

Coquenil started. "The owner of the pistol we found in the courtyard?"

"Precisely. I should tell you, also, that the balls from that pistol are identical with the ball extracted from the body. The autopsy proves it, so Dr. Joubert says. And this pistol belongs in a leather holster that I found in Mr. Kittredge's room. Dr. Joubert let me take the pistol for verification and—there, you can see for yourselves."

With this he produced the holster and the pistol and laid them before the judge. There was no doubt about it, the two objects belonged together. Various worn places corresponded and the weapon fitted in its case. "Besides," continued Gibelin, "the chambermaid identifies this pistol as the property of the American. He always kept it in a certain drawer, she noticed it there a few days ago, but yesterday it was gone and the holster was empty."