"I know," she said, laconically. "Come this way, both of you."

She raised a flap-door located at one side of the counter. Brett followed her into a pa.s.sage behind the doorway that led into the bar.

Fairholme succeeded him.

The trio pa.s.sed rapidly through a door at the end of the pa.s.sage, and quickly found themselves in a long, low room, usually devoted to billiards. The place was dark and smelled evilly of stale tobacco.

Daylight penetrated but feebly through the red blinds that blocked up three windows on one side. The woman drew two of these blinds, and thus illuminated the interior. The windows opened on to a yard, and the place was thoroughly shut off from all observation from the street.

"Now," she said, "I will show you something."

She walked towards the fireplace at the end of the room. On the mantelpiece was a square of iron sheeting, painted white and studded with curious-looking spikes in circles, triangles, and straight lines.

From a box close at hand she took half a dozen small gla.s.s bulbs, red and blue. She placed them in a line on some of the spikes at intervals of two inches. Then she retired to that side of the room where they had entered. The distance was perhaps thirty feet.

Before Brett or Fairholme could vaguely guess her intention she whipped a revolver out of her pocket. It would be idle to deny that they were startled, but the woman paid not the least attention to them.

She steadily levelled the weapon and fired twice, smashing the two outer b.a.l.l.s of the six. Then she transferred the pistol to her left hand and smashed another pair. Then she turned her back to the target, adjusted a small mirror attached to the b.u.t.t of the revolver, and smashed both of the remaining bulbs by firing over her left shoulder. Sweeping round with a triumphant smile towards the barrister, she said, "I can do that in fifty other ways, but six will suffice."

"It is very clever, madame," he said. "May I ask why I am indebted to you for this display?"

She replaced the revolver in her pocket. "It is my answer to your question, monsieur," she said. "That is the way I and my friends often talk to people who annoy us; and now I shall wish you good-day. You will find other sights in Montmartre to interest you."

Brett laughed easily, and bowed low.

"Believe me," he said, "I will find few performers so expert and, may I add, so discreet. We will meet again, and perhaps test your skill."

Without another word the party returned to the front room of the restaurant, and Brett and Fairholme pa.s.sed into the street where their cab was waiting.

"I suppose she meant," said Fairholme "that if we were not jolly careful she would put a bullet through our hearts as easily as through those gla.s.s bulbs."

"Such was her intention," said Brett, dryly. "But women never have true dramatic genius. That was a piece of melodrama which might suffice with many of her cla.s.s. It amused me, but it was a waste of time on her part."

"Anyhow, we shall not get much out of her in the way of information."

"Oh, yes, we will. She will tell us everything. She has told me a great deal already."

"What?" cried his lordship. "Did that shooting affair convey anything more to you than what I have said?"

"Of course. What need was there for such a trick? In the first place it is very simple. You or I could do it after ten minutes' practice with an expanding charge and a show pistol. Secondly, she admitted that the Cabaret Noir is a centre of operations for the gang in whom we are interested. By the way, I should like to know her name."

He directed the driver to wait for them at a street corner some little distance further on. Close to where they stood an itinerant vendor was selling some mechanical toys.

Brett bought one. The price was twenty sous. He gave the man a two-franc piece and refused the change.

"Do you know," he said, "who is the proprietor of the Cabaret Noir?"

"Certainly, monsieur," replied the gutter-merchant; "it is Gros Jean.

His name is Beaucaire."

"Ah! And the lady who lives there, a dark pretty woman with white skin, who is she?"

"That is his daughter," said the man. "She is known as La Belle Cha.s.seuse."

"Why such a name?"

"Because she is clever with firearms. She used to be in a circus, but she left the profession a year ago."

"And does she live here constantly?"

"I cannot say. I think she goes away a great deal. She was travelling recently; she came back--let me see--last Tuesday night."

"Thank you," said Brett. The two re-entered their cab, and Brett told the driver to proceed as rapidly as possible to the Rue St. Honore.

"I hope to goodness," he said to Fairholme, "that Captain Gaultier has not left Paris already; these Foreign Office messengers are liable to be despatched to the other end of the earth at a moment's notice."

"Why do you wish to see him?" said Fairholme.

"Simply to obtain definite confirmation of my theory. La Belle Cha.s.seuse was the woman who accompanied the man made up to look like Jack Talbot during his journey from London. If Gaultier can see her and a.s.sure me that I am right I will be convinced concerning that which I already know to be true."

"By Jove!" cried Fairholme, "that never occurred to me. I wonder if it is so?"

"Mademoiselle Beaucaire is quite an adept in two things: she can break tiny gla.s.s bulbs and she can flirt. She chose to exhibit the first of these accomplishments to us, and convey what was intended to be a warning; in reality, she gave us some valuable information."

"I suppose," said Fairholme, "that this crowd will watch us pretty closely, won't they?"

Brett leaned back in the cab and laughed heartily.

"We are the most interesting persons in Paris to them at this moment,"

he said. "That poor fellow who sold us the toys will have to change his position, I am afraid. One of them is following us now. Let's see who it is."

At the next street corner he stopped the cab suddenly, and jumped out, followed by Fairholme. A minute later another vehicle dashed into the street. In it was seated a lady, closely veiled; but a large feather hat and the grotesque pattern of a black veil could not wholly conceal the pretty, determined face of La Belle Cha.s.seuse.

Evidently she had no one at hand to undertake the mission, so she followed Brett in person. He signalled to her and to her driver.

Astonished, the man pulled up. Brett instantly advanced and took off his hat with that pleasant smile of his which usually went straight to the female heart, but which now thoroughly lost its effect on the furious young woman who looked at him from the interior of the _voiture_.

"Allow me," he said, "to offer my friendly services. It is a close day and mademoiselle has, I am sure, many other calls on her time. I will save you at least an hour, and myself nearly the same period. I am going to secure the presence of a witness to identify you as the lady who crossed the Channel last Tuesday in company with a gentleman. You both drove to the Grand Hotel, and your companion signed the register there in the names of Mr. and Mrs. Talbot; is it not so?"

She bent forward and looked at him viciously. Her eyes sparkled with annoyance at being caught so easily in her self-imposed piece of espionage.

"Monsieur is clever," she snapped.

"Thank you," he replied, still smiling. "I can occasionally hit the mark with a guess as well as mademoiselle can with her pistol. But, believe me, I only intend at this moment to be polite. Of course, the presence of a witness to identify you is unnecessary. Mademoiselle can now return to the Cabaret Noir, whilst my friend and I will proceed direct to the Grand Hotel. It saves so much trouble, does it not?"

For a moment the woman looked as though she would have liked to produce that infallible revolver and shot him on the spot. Then she angrily commanded her driver to return.

Fairholme surveyed the scene with open-eyed amazement. "Well," he said, "that beats everything. You really have a splendid nerve. The whole business reads like a chapter out of one of Gaboriau's novels."

"That is the way people live in Paris, my dear fellow. Life is an artificial matter here. But all this excitement has made me hungry. Let us have _dejeuner_."