you have no kind of right to imply doubt of your superior's conduct. I hope you will prove yourself as courageous and trustworthy as he has always been."
The pale face of the red-haired man seemed a shade paler, but he was silent and composed, and Sir Walter went up to Nolan with marked courtesy, saying, "Shall we go outside now, and get this business done?"
Dawn had lifted, leaving a wide chasm of white between a great gray cloud and the great gray moorland, beyond which the tower was outlined against the daybreak and the sea.
Something in its plain and primitive shape vaguely suggested the dawn in the first days of the earth, in some prehistoric time when even the colors were hardly created, when there was only blank daylight between cloud and clay. These dead hues were relieved only by one spot of gold – the spark of the candle alight in the window of the lonely tower, and burning on into the broadening daylight. As the group of detectives, followed by a cordon of policemen, spread out into a crescent to cut off all escape, the light in the tower flashed as if it were moved for a moment, and then went out. They knew the man inside had realized the daylight and blown out his candle.
"There are other windows, aren't there?" asked Morton, "and a door, of course, somewhere round the corner? Only a round tower has no corners."
"Another example of my small suggestion," observed Wilson, quietly. "That queer tower was the first thing I saw when I came to these parts; and I can tell you a little more about it – or, at any rate, the outside of it. There are four windows altogether, one a little way from this one, but just out of sight. Those are both on the ground floor, and so is the third on the other side, making a sort of triangle. But the fourth is just above the third, and I suppose it looks on an upper floor."
"It's only a sort of loft, reached by a ladder, said Nolan. "I've played in the place when I was a child. It's no more than an empty shell." And his sad face grew sadder, thinking perhaps of the tragedy of his country and the part that he played in it.
"The man must have got a table and chair, at any rate," said Wilson, "but no doubt he could have got those from some cottage. If I might make a suggestion, sir, I think we ought to approach all the five entrances at once, so to speak. One of us should go to the door and one to each window; Macbride here has a ladder for the upper window."
Mr. Horne Fisher languidly turned to his distinguished relative and spoke for the first time.
"I am rather a convert to the cockney school of psychology," he said in an almost inaudible voice.
The others seemed to feel the same influence in different ways, for the group began to break up in the manner indicated. Morton moved toward the window immediately in front of them, where the hidden outlaw had just snuffed the candle; Nolan, a little farther westward to the next window; while Wilson, followed by Macbride with the ladder, went round to the two windows at the back. Sir Walter Carey himself, followed by his secretary, began to walk round toward the only door, to demand admittance in a more regular fashion.
"He will be armed, of course," remarked Sir Walter, casually.
"By all accounts," replied Horne Fisher, "he can do more with a candlestick than most men with a pistol. But he is pretty sure to have the pistol, too."
Even as he spoke the question was answered with a tongue of thunder. Morton had just placed himself in front of the nearest window, his broad shoulders blocking the aperture. For an instant it was lit from within as with red fire, followed by a thundering throng of echoes. The square shoulders seemed to alter in shape, and the sturdy figure collapsed among the tall, rank grasses at the foot of the tower. A puff of smoke floated from the window like a little cloud. The two men behind rushed to the spot and raised him, but he was dead.
Sir Walter straightened himself and called out something that was lost in another noise of firing; it was possible that the police were already avenging their comrade from the other side. Fisher had already raced round to the next window, and a new cry of astonishment from him brought his patron to the same spot. Nolan, the Irish policeman, had also fallen, sprawling all his great length in the grass, and it was red with his blood. He was still alive when they reached him, but there was death on his face, and he was only able to make a final gesture telling them that all was over; and, with a broken word and a heroic effort, motioning them on to where his other comrades were besieging the back of the tower. Stunned by these rapid and repeated shocks, the two men could only vaguely obey the gesture, and, finding their way to the other windows at the back, they discovered a scene equally startling, if less final and tragic. The other two officers were not dead or mortally wounded, but Macbride lay with a broken leg and his ladder on top of him, evidently thrown down from the top window of the tower; while Wilson lay on his face, quite still as if stunned, with his red head among the gray and silver of the sea holly. In him, however, the impotence was but momentary, for he began to move and rise as the others came round the tower.
"My God! it's like an explosion!" cried Sir Walter; and indeed it was the only word for this unearthly energy, by which one man had been able to deal death or destruction on three sides of the same small triangle at the same instant.
Wilson had already scrambled to his feet and with splendid energy flew again at the window, revolver in hand. He fired twice into the opening and then disappeared in his own smoke; but the thud of his feet and the shock of a falling chair told them that the intrepid Londoner had managed at last to leap into the room. Then followed a curious silence; and Sir Walter, walking to the window through the thinning smoke, looked into the hollow shell of the ancient tower. Except for Wilson, staring around him, there was nobody there.
The inside of the tower was a single empty room, with nothing but a plain wooden chair and a table on which were pens, ink and paper, and the candlestick. Halfway up the high wall there was a rude timber platform under the upper window, a small loft which was more like a large shelf. It was reached only by a ladder, and it seemed to be as bare as the bare walls. Wilson completed his survey of the place and then went and stared at the things on the table. Then he silently pointed with his lean forefinger at the open page of the large notebook. The writer had suddenly stopped writing, even in the middle of a word.
"I said it was like an explosion," said Sir Walter Carey at last. "And really the man himself seems to have suddenly exploded. But he has blown himself up somehow without touching the tower. He's burst more like a bubble than a bomb."
"He has touched more valuable things than the tower," said Wilson, gloomily.
There was a long silence, and then Sir Walter said, seriously: "Well, Mr. Wilson, I am not a detective, and these unhappy happenings have left you in charge of that branch of the business. We all lament the cause of this, but I should like to say that I myself have the strongest confidence in your capacity for carrying on the work. What do you think we should do next?"
Wilson seemed to rouse himself from his depression and acknowledged the speaker's words with a warmer civility than he had hitherto shown to anybody. He called in a few of the police to assist in routing out the interior, leaving the rest to spread themselves in a search party outside.
"I think," he said, "the first thing is to make quite sure about the inside of this place, as it was hardly physically possible for him to have got outside. I suppose poor Nolan would have brought in his banshee and said it was supernaturally possible. But I've got no use for disembodied spirits when I'm dealing with facts. And the facts before me are an empty tower with a ladder, a chair, and a table."
"The spiritualists," said Sir Walter, with a smile, "would say that spirits could find a great deal of use for a table."
"I dare say they could if the spirits were on the table – in a bottle," replied Wilson, with a curl of his pale lip. "The people round here, when they're all sodden up with Irish whisky, may believe in such things. I think they
