knowledge will be of no value to any detective, even though he be your Mr. Barnes."
"How will you avoid that danger?"
"My dear boy, do you suppose for an instant that I would reply to that, after pointing out that a detective may be listening? However, I will give you an idea. I will show you what I meant when I said that Pettingill had blundered. You said that he had lost only a button, and thought it clever in Barnes to trace him from the button. But a button may be a most important thing. If I should lose one of the buttons of my vest, whilst committing a crime, Mr. Barnes would trace me out in much less than ten days, and for this reason, they are the only ones of the kind in the world."
"How does that happen? I supposed that buttons were made by the thousand?"
"Not all buttons. For reasons which I need not tell the possibly listening detective, a friend travelling abroad had a set made especially, and brought them back to me as a present. They are six handsomely cut cameos, half the set having the profile head of Juliet, and the others a similar face of Romeo."
"A romance?"
"That is immaterial. Suppose that I should plan a robbery in order to decide this wager. As necessity would not urge me either as to time or place, I should choose my opportunity, let us say when but one person guarded the treasure. That one I should chloroform and also tie. Next, I should help myself to the designated plunder. Suppose that as I were about to depart a sleeping, uncalculated-for pet dog should jump out and bark furiously? I reach for it and it snaps at me, biting my hand. I grapple it by the throat and strangle it, but in its death throes it bites my vest, and a button falls to the ground and rolls away. The dog is at last silenced. Your ordinary burglar by this time would be so unnerved that he would hasten off, not even realizing that he had been bitten, that blood had flowed, or that the button was lost. Mr. Barnes is sent to the house the next day. The lady suspects her coachman, and Mr. Barnes consents to his arrest, not because he thinks him guilty, but because, as the mistress thinks so, he may be, and then more especially, his arrest will lull the fear of the real culprit. Mr. Barnes would observe blood on the ground, on the dog's mouth, and he would find the button. From the button he would find Mr. Thief, with his hand bitten, and there you are."
"But how should you avoid all that?"
"In the first place, were I really wise, I should not have tell-tale buttons about me at such a time. But let us suppose that the time had not been of my own choosing, then the buttons might have been with me. Assured as I should have been that the only person in the house lay chloroformed and tied, I should not have lost my nerve as did the other individual. Neither should I have allowed myself to be bitten, though if the accident had occurred I should have stopped to wash up the stain from the carpet while fresh, and also from the dog's mouth. I should have discovered the loss of the button, searched for and recovered it, untied the victim, and opened the windows, that the odor of chloroform could pass off during the night. In fact, in the morning the only evidence of crime would have been the strangled dog and the absence of the pelf."
"It is easy enough to explain your actions under suppostitious circumstances. But I doubt if in Pettingill's shoes you would have been able to retain your presence of mind, and recover the lost button which led to his final arrest."
"It is possible that you are right, for had I been Pettingill I should have been coerced by necessities as he was. Yet I think I should not have planned such a robbery, choosing my own time as he did, and then have taken with me such a button. But from Mr. Barnes's standpoint, as I said before, very little of the artistic was needed. The button was constructed of a curious old coin. Mr. Barnes went the rounds of the dealers and found the very man who had sold Pettingill the coin. The rest was routine work."
"Well, you are conceited, but I don't mind making a thousand out of your egotism. Now I am sleepy, however, so good-night."
"Good-night, old man. Dream of a way to earn an extra thousand, for I shall win."
For Mr. Barnes himself sleep was now more impossible than ever. He was attracted to this new case, for so he counted it, and was determined to trap the individual who wagered against his acumen. It was a long step towards success to know as much as he had overheard. He would not lose sight of his man during the allotted month. He enjoyed the prospect of allowing him to commit his crime and then quietly taking him in the act. Carefully and noiselessly he dressed himself and slipped out of his berth. Then he crept into one opposite, so that he could have his eye on number eight, and settled down for an all-night vigil.
"It would not surprise me if that keen devil were to commit his crime this very night. I hope so, for otherwise I shall have no sleep till he does."
CHAPTER II.
A DARING AND SUCCESSFUL TRAIN ROBBERY
The train was just approaching Stamford, and from the window in the section which he occupied Mr. Barnes was watching the sun glowing red over the hilltops, when he heard approaching him the guard who had assisted him to jump aboard the night before. The man was making mysterious gestures, from which Mr. Barnes understood that he was wanted. He arose and followed the porter to the smoking-room.
"I think you called yourself Barnes," said the man, "as you jumped aboard last night."
"Yes, what of it?"
"Are you Mr. Barnes the detective?"
"Why do you ask?"
"Because, if you are, the conductor wants to see you. There was a big robbery committed on the train during the night."
"The devil!"
"Exactly, but will you come into the next coach?"
"Wait a minute." Mr. Barnes went back into the main part of the coach and tip-toed towards number eight. Gently moving the curtains, he peeped in and looked long and earnestly. He saw two men undoubtedly sleeping soundly. Satisfied therefore that he could leave his watch for a brief period, he followed the porter into the next coach, where he found the conductor waiting for him in the smoking-room.
"You are Mr. Barnes the detective?" asked the conductor. Mr. Barnes assented.
"Then I wish to place in your hands officially a most mysterious case. We took on a lady last night at Boston, who had a ticket to South Norwalk. As we were approaching that point a short time ago she was notified by the porter. She arose and dressed preparatory to leaving the train. A few minutes later I was hurriedly summoned, when the woman, between hysterical sobs, informed me that she had been robbed."
"Of much?"
"She claims to miss a satchel containing a hundred thousand dollars, in jewelry."
"You have stated that adroitly. She claims to miss! What evidence have you that she has met with any loss at all?"
"Of course we cannot tell about the jewelry, but she did have a satchel, which is now missing. The porter remembers it, and we have searched thoroughly with no success."
"We have stopped at New Haven and at Bridgeport. How many persons have left the train?"
"No one has left the sleepers."
"When you say that no one has left the sleepers, I suppose you mean you saw no one leave?"
"No! I mean just what I said. I have sent the porters through the coaches and they report that all our passengers are in their berths. But here we come to a point. If no one has left the train, then the thief must be aboard?"
"Certainly!"
"The
