Barnet was then, as now, a somewhat straggling place. Soon after entering it, the horseman turned off from the main road. His pursuers were but fifty yards behind him, and they kept him in sight until, after proceeding a quarter of a mile, he stopped at a small tavern, where he dismounted, and a boy took his horse and led it round by the side of the house.

"Run to earth!" Harry said exultantly. "He is not likely to move from there tonight."

"At any rate, he is safe for a couple of hours," Charlie said. "So we will go to our inn, and have a good meal. By that time it will be quite dark, and we will have a look at the place he has gone into; and if we can't learn anything, we must watch it by turns till midnight. We will arrange, at the inn, to hire a horse. One will be enough. He only caught a glimpse of us at that inn, and certainly would not recognize one of us, if he saw him alone. The other can walk."

"But which way, Charlie? He may go back again." "It is hardly likely he came here merely for the pleasure of stopping the night at that little tavern. I have no doubt he is bound for London. You shall take the horse, Harry, and watch until he starts, and then follow him, just managing to come up close to him as he gets into town. I will start early, and wait at the beginning of the houses, and it is hard if one or other of us does not manage to find out where he hides."

They had no difficulty in arranging with the landlord for a horse, which was to be left in a stable he named in town. They gave him a deposit, for which he handed them a note, by which the money was to be returned to them by the stable keeper, on their handing over the horse in good condition.

After the meal they sallied out again, and walked to the tavern, which was a small place standing apart from other houses. There was a light in the taproom, but they guessed that here, as at the other stopping place, the man they wanted would be in a private apartment. Passing the house, they saw a light in a side window, and, noiselessly opening a little wicket gate, they stole into the garden. Going a short distance back from the window, so that the light should not show their faces, they looked in, and saw the man they sought sitting by the fire, with a table on which stood a bottle and two glasses beside him, and another man facing him.

"Stay where you are, Harry. I will steal up to the window, and find out whether I can hear what they are saying."

Stooping close under the window, he could hear the murmur of voices, but could distinguish no words. He rejoined his companion.

"I am going to make a trial to overhear them, Harry, and it is better that only one of us should be here. You go back to the inn, and wait for me there."

"What are you going to do, Charlie?"

"I am going to throw a stone through the lower part of the window. Then I shall hide. They will rush out, and when they can find no one, they will conclude that the stone was thrown by some mischievous boy going along the road. When all is quiet again I will creep up to the window, and it will be hard if I don't manage to learn something of what they are saying."

The plan was carried out, and Charlie, getting close up to the window, threw a stone through one of the lowest of the little diamond-shaped panes. He heard a loud exclamation of anger inside, and then sprang away and hid himself at the other end of the garden. A moment later he heard loud talking in the road, and a man with a lantern came round to the window; but in a few minutes all was quiet again, and Charlie cautiously made his way back to the window, and crouched beneath it. He could hear plainly enough, now, the talk going on within.

"What was I saying when that confounded stone interrupted us?"

"You were saying, captain, that you intended to have a week in London, and then to stop the North coach."

"Yes, I have done well lately, and can afford a week's pleasure. Besides, Jerry Skinlow got a bullet in his shoulder, last week, in trying to stop a carriage on his own account, and Jack Mercer's mare is laid up lame, and it wants four to stop a coach neatly. Jack Ponsford is in town. I shall bring him out with me."

"I heard that you were out of luck a short time ago."

"Yes, everything seemed against me. My horse was shot, and, just at the time, I had been having a bad run at the tables and had lost my last stiver. I was in hiding for a fortnight at one of the cribs; for they had got a description of me from an old gentleman, who, with his wife and daughter, I had eased of their money and watches. It was a stupid business. I dropped a valuable diamond ring on the ground, and in groping about for it my mask came off, and, like a fool, I stood up in the full light of the carriage lamp. So I thought it better, for all reasons, to get away for a month or so, until things quieted down. I wanted to visit my banker, and it was a good many miles to tramp."

"Oh, you have got a banker, captain?"

"I have one who is just as good, though I cannot say he shells out his money willingly--in fact he was rude enough to say, when I called this time, that if I ever showed my face to him again he would shoot me, even if he were hung for it. Bad taste, wasn't it? At any rate, I mustn't call on him again too soon."

"You haven't settled on the night yet, I suppose, captain?"

"About the end of next week. Friday will be a full moon, I think, and I like a moon for the work. It gives light enough to see what you are doing, and not light enough for them to see much of you. So I suppose I may as well fix Friday. I will send up a message for Jack Mercer and Jerry Skinlow to be here on Thursday evening. I will be here that afternoon, and settle matters with them as to where they shall meet me, and what each man shall do. Then I will ride back to town, and come out again just as it gets dark, with Jack Ponsford."

"I suppose you will do it north of here?"

"No, I will do it a mile or two out of town. The road north of this is getting rather a bad reputation, and in going out of Barnet the guard now looks to his blunderbuss, and the passengers get their pistols ready. It isn't once in a hundred times they have pluck enough to use them, but they always think they will, until the time comes. Near town we shall take them by surprise, and stop them before they have time to think of getting out their arms.

"Confound that window. Shove something into the hole, Johnson. I can feel the cold right down my back."

A cloth was pushed into the broken pane, and Charlie could hear no more of what was said inside. He had heard, indeed, enough for his purpose, but he had hoped to gather the name of the place at which the man would put up in London. However, he was well satisfied with his success, and at once made his way back to the inn.

"Well, Charlie, how have you succeeded?" Harry asked, as he sat down at the table.

"Could not be better, Harry, though I did not find out where he puts up in London. However, that is of small consequence. In the first place, I found out that our suspicions were right, and that the fellow is a highwayman, and seems to be captain of a gang consisting anyhow of three, and perhaps of more, fellows like himself. In the second place, he intends, with his three comrades, to attack the coach on Friday week, two or three miles out of town. Nothing could better suit our purpose, even if we had planned the affair ourselves. Of course, we will be there. If we can capture him while engaged in that work, we can get anything out of him. He has either got to confess or be hanged."

"That is a stroke of good luck, indeed," Harry exclaimed. "It will be rather difficult to manage, though. The fellows will be sure to be masked; and, if we were to shoot him instead of one of the others, it would be fatal."

"Yes, that would be awkward. Besides," Charlie said, "even if we did recognize him and shot his horse, he might jump up behind one of the other men, or might make off across the country, and we might lose sight of him before we could get down from the top of the coach to pursue."

"It might be better if we were mounted, instead of being on the coach."

"Better in some ways, Harry; but if they heard two mounted men coming along beside the coach, they would probably take the alarm and not attack at all; while, if we were to keep a bit behind, and ride up as soon as we heard the firing--for they generally shoot one of the horses to bring the coach to a standstill--they might ride off as soon as they heard the sound of the horses on the road. Those fellows are splendidly mounted. Their lives depend upon it, and nothing we should be able to hire would be likely to have a chance with them."

"Well, we shall have plenty of time to think this over, Charlie. I suppose we shall carry out our plan tomorrow, as we arranged."

"Certainly. It is as important to find out where he lives in London as it was before, for if he gets away, we can then look him up there. We may as well go to bed at once, for I shall start at four, so as to get to town before him, however early he may be off. But as we know, now, he is going up on pleasure and not on business, I don't suppose he will be in any hurry in the morning."

Charlie arrived in town about eight o'clock, and, having breakfasted at the first tavern he came to, walked along for some distance, to decide upon the spot where he should take up his position. As Nicholson was going up, as he said, to enjoy himself, it was not likely that he would put up at Islington, but would take up his quarters in the centre of the town. He therefore decided to walk on, until he came to some junction of important roads; and there wait, as the man might make either for the city or Westminster, though the latter appeared the more probable direction.

Here he walked up and down for an hour, and then, entering a tavern, took his place at the window, where he could see up the street, called for a stoup of wine, and prepared for a long wait.

It was not, indeed, until three o'clock that he saw Nicholson coming along. He was more gaily dressed than he had been on the previous day. He had on a green cloth coat with gold braid round the cuffs, an embroidered waistcoat, yellow breeches, top boots, and three-cornered hat. He was riding at foot pace.

Charlie went to the door as soon as he passed, and saw that, as he expected, he took the road to Westminster. Looking round, he saw Harry riding about a hundred yards behind. Charlie had no difficulty in keeping up with Nicholson, and traced him to a house in a quiet street lying behind the Abbey. A boy came out and held the horse, while its rider dismounted, and then led it away to the stable of an inn a short distance away. Charlie turned at once, and joined Harry.

"I need not have taken all the trouble I have, Harry, still there was no knowing. Evidently the fellow has no fear of being detected, and is going to pass, for a week, as a gentleman from the country. I suppose he is in the habit of stopping at that house whenever he comes up with his pockets lined, and is regarded there as a respectable gentleman by the landlord. Now you had better take your horse to the stable, where you agreed to hand it over, and we will meet at our lodgings and plan what to do next."

The discussion did not lead to much. There did not seem, to them, anything to do until the day when the coach was to be attacked, but they agreed it would be well to take the advice of their friend the tipstaff. Hitherto, they had not told him more of their motive for desiring to find Nicholson, than Charlie had said at his first interview with him. They thought it would be better, now, to make him more fully acquainted with the facts, for they had found him shrewd, and eager to assist them to the best of his power. They therefore sent a boy with a note to him, at the court, and at seven o'clock he came to their lodgings.

"We have found our man," Charlie said as he entered.

"I am very glad to hear it, gentlemen. I had quite given up all hopes that you would be able to do so, and thought he must have left town altogether for a time."

"Sit down and take a glass of wine. We want your advice in this matter, and unless you know how much there is at stake, you will not be able to enter fully into the affair.

"Some four years ago, this fellow was concerned in a plot by which six gentlemen, among whom were our friends, were brought to ruin. They were in the habit of meeting together, being all of similar political opinions, and advantage was taken of this by a man, who hoped to profit largely by their ruin, especially by that of my father. In order to bring this about, he recommended this fellow we are in search of to my father, who happened, at the time, to be in want of a servant.

"The fellow undoubtedly acted as a spy, for I once caught him at it. But spying alone would have been of no use, for there was nothing at any time said that would have brought harm upon them. They simply discussed what thousands of other people have discussed, the measures that should be taken on behalf of the Stuarts, if one of them came over from France supported by a French force. The fellow, however, swore that the object of these meetings was to arrange for an assassination of William. He gave full details of the supposed plot, and in order to give substance to his statements, he hid, in a cabinet of my father's, a number of compromising papers, professing to be letters from abroad.

"These were found by the officers sent to arrest my father. He and his five friends managed to escape, but their estates were forfeited. Of course, what we want to prove is the connection between this spy and his employer, who, for his services in bringing this supposed plot to light, received as a reward my father's estates. There is no way of doing this, unless this man can be brought to confess his own villainy in the matter of the letters, and to denounce the scoundrel whose agent he was. Probably, by this time, he has got nearly all he can expect from his employer, and will at least feel no scruples in exposing him, if by so doing he can save his own neck.

"Now, we have not only discovered the man, but have found out that he is a notorious highwayman, and the leader of a gang; but more, I have found out the day and hour on which he proposes to stop and rob the North coach."

"Well, Mr. Carstairs, if you have done that," the man said, "you have done marvels. That you should find the man might be a piece of good luck, but that you should have learned all this about him seems to me wonderful."

"It was a lucky accident, altogether. We saw him, watched him, and managed to overhear a conversation from which we gathered these facts. It was all simple enough. Of course, our idea is that we should, if possible, catch him in the act of robbing the coach, bind and take charge of him, saying that we should hand him over to justice, when the coachman and passengers would, of course, appear to testify against him. Instead of doing this, we should take him somewhere, and then give him the option of either making a clean breast of the whole story, and remaining in our custody until called upon to testify to his statement in a court of justice, whenever required; or of being handed over to the authorities, to be tried and hung as a highwayman.

"One of our greatest difficulties is how to effect his capture. The attack will be made at night on the coach, and in the darkness we might shoot him, or he might get away. He is at present in London, at a lodging in a street behind the Abbey, where, doubtless, his real profession is altogether unsuspected by the people of the house.

"Now you know the whole affair. Let us have your opinion as to the manner in which we had best set about the business."

The man sat for some time, in silence.

"I can think of no better plan than yours, sir, and yet it seems to me that there is scarcely any chance of your catching him at the coach. Of course, it would be easy enough if you did not care whether you killed or caught him. All you would have to do would be to get half a dozen stout fellows, armed with pistols, on the coach with you instead of passengers, and then you would be pretty certain to kill some of them, perhaps all; but, as you can't do that, and are afraid to shoot lest you should kill him, it seems to me that you have a very small chance of catching him that way."

Charlie and his friend so thoroughly saw this, that they sat silent when he ceased speaking.

"We could not arrest him now, I suppose?" Harry said at last.

"Well, you see, you have got nothing against him. He may have been a Knight of the Road for the last five years, but ............