“You forget, Mr. Thorndyke,” the chief said firmly, “that at the present moment you are a member of my force, and that you go to this place in that capacity, and not as Squire of Crowswood; therefore you must, if you please, do as I instruct you. The gentleman will be ready to pay that sum. As you see, the amounts entered here total up to nearly 10,000 pounds. He said that it will ruin him to pay that sum, but that he must do so rather than his son should be branded as a defaulter. I have advised him to write to all these people saying that it will take him some time to raise the money, but that he will see that nobody shall be a loser by his son's debts. I have told him in the meantime that I will endeavor to get proof that the play was not fair, and in that case he would, of course, refuse to pay any of the claims on that ground; and you may be sure that if unfair play was proved none of those concerned would dare to press their claims.”
“Then my function would be simply to watch?”
“Yes, to watch, and to bring me word of anything you may observe. You see, without making a public scandal, if it could be found that a man was discovered cheating, and the way in which he was doing it, one would be able to put so strong a pressure on him, that not only might he be forced to abstain from going to any club, but would be frightened into giving up any IOUs he might hold.”
“I shall be glad to do the best I can, sir; but frankly I know next to nothing of cards, and should have but little chance of detecting anything that might be going on, when it must be done so cleverly that experienced gamblers, watching a man closely, fail to see anything wrong.”
“I quite understand that; but one of my men has made a study of the various methods employed by gamblers to cheat, and although it would take you years to learn how to do it yourself, a few hours' instruction from him would at least put you up to some of their methods, and enable you to know where to look for cheating. The man is now waiting in the next room, and if you will take two or three hours daily with him, say for a week, you ought to be able to detect the doings of these fellows when to others everything seems right and above board. You may have no inclination for cards, but knowledge of that sort is useful to anyone in society, here or anywhere else, and may enable him either to save his own pocket or to do a service to a friend.”
Mark was greatly interested in the tricks the man showed him. At first it seemed to him almost magical, after he himself had shuffled the cards and cut them the dealer invariably turned up a king. Even admitting he might have various places of concealment, pockets in the lining of the sleeve, in the inside of the coat, and in various other parts of the dress, in which cards could be concealed and drawn out by silken threads, it did not seem possible that this could be done with such quickness as to be unobserved. It was only when his teacher showed him, at first in the slowest manner, and then gradually increasing his speed, that he perceived that what seemed impossible was easy enough when the necessary practice and skill had been attained. The man was indeed an adept at a great variety of tricks by which the unsuspecting could be taken in.
“I ought to know,” he said. “I was for three years in a gambling house in Paris, where every other man was a sharper. I have been in places of the same sort in Belgium, Holland, Germany, and Italy. At first I was only a boy waiter, and as until evening there was nothing doing at these places, men would sometimes amuse themselves by teaching me tricks, easy ones to begin with, and when they saw I was sharp and quick handed they went on. After a time I began to work as a confederate, and at last on my own account; but I got disgusted with it at last. A young fellow shot himself at the table of the gambling house at Rome, and at another place I was nearly killed by a man who had lost heavily—do you see, it has left a broad scar right across my forehead?—so I gave it up.
“I was in the French police for a time, and used to watch some of the lower hells. I was nearly killed there once or twice, and at last I came back here. My French chief gave me a letter to the chief, and I was taken on at once, for, talking as I do half a dozen languages, and being acquainted with most of the swell mobsmen of Paris, I was just the man who happened to be wanted here at the time. Since I came over I have done a good deal in the way of breaking up hells where sailors and others are plundered. But, you see, I cannot be used for the higher class of work; my nose has been broken, and I have half a dozen scars on my face. I hate the sight of cards now. I have seen so much of the ruin they do, and have, I am sorry to say, taken a hand so often in doing it, that save showing someone who would use the knowledge in the right way how the tricks are done, nothing would persuade me to touch them again. However, as a protection, the knowledge is as useful as it is dangerous when used the other way. It would take you ten years to learn to do these tricks yourself so well as to defy detection; but in a very short time, by learning where to keep your eyes, you would get to detect almost any of them.
“You see, there are three methods of cheating: the first by hidden cards, the second by marked cards, the third simply by sleight of hand, this being generally used in connection with marked cards. These tricks require great skill and extreme delicacy of touch, for the marks, which are generally at the edge of the cards, are so slight as to be altogether imperceptible save to a trained hand. There are also marks on the back of the cards; these are done in the printing, and are so slight that, unless attention were attracted to them, no one would dream of their existence.”
In the course of a week's practice Mark learned where to look for cheating; he could not indeed follow the fingers of his instructor, for even when he knew what was going to be done, the movements were so rapid that his eye could not follow them, and in nine cases out of ten he was unable to say whether the coup had been accomplished or not; but he could see that there was a slight movement of the fingers that could only mean that something was being done.