"Then there is a sort of mathematical question," went on Fisher, leaning back in his limp way and looking up at the bare walls, as if tracing imaginary diagrams there. "It's not so easy for a man in the third angle to face the other two at the same moment, especially if they are at the base of an isosceles. I am sorry if it sounds like a lecture on geometry, but--"

"I'm afraid we have no time for it," said Wilson, coldly. "If this man is really coming back, I must give my orders at once."

"I think I'll go on with it, though," observed Fisher, staring at the roof with insolent serenity.

"I must ask you, Mr. Fisher, to let me conduct my inquiry on my own lines," said Wilson, firmly. "I am the officer in charge now."

"Yes," remarked Horne Fisher, softly, but with an accent that somehow chilled the hearer. "Yes. But why?"

Sir Walter was staring, for he had never seen his rather lackadaisical young friend look like that before. Fisher was looking at Wilson with lifted lids, and the eyes under them seemed to have shed or shifted a film, as do the eyes of an eagle.

"Why are you the officer in charge now?" he asked. "Why can you conduct the inquiry on your own lines now? How did it come about, I wonder, that the elder officers are not here to interfere with anything you do?"

n.o.body spoke, and n.o.body can say how soon anyone would have collected his wits to speak when a noise came from without. It was the heavy and hollow sound of a blow upon the door of the tower, and to their shaken spirits it sounded strangely like the hammer of doom.

The wooden door of the tower moved on its rusty hinges under the hand that struck it and Prince Michael came into the room. n.o.body had the smallest doubt about his ident.i.ty. His light clothes, though frayed with his adventures, were of fine and almost foppish cut, and he wore a pointed beard, or imperial, perhaps as a further reminiscence of Louis Napoleon; but he was a much taller and more graceful man that his prototype. Before anyone could speak he had silenced everyone for an instant with a slight but splendid gesture of hospitality.

"Gentlemen," he said, "this is a poor place now, but you are heartily welcome."

Wilson was the first to recover, and he took a stride toward the newcomer.

"Michael O'Neill, I arrest you in the king's name for the murder of Francis Morton and James Nolan. It is my duty to warn you--"

"No, no, Mr. Wilson," cried Fisher, suddenly. "You shall not commit a third murder."

Sir Walter Carey rose from his chair, which fell over with a crash behind him. "What does all this mean?" he called out in an authoritative manner.

"It means," said Fisher, "that this man, Hooker Wilson, as soon as he had put his head in at that window, killed his two comrades who had put their heads in at the other windows, by firing across the empty room. That is what it means. And if you want to know, count how many times he is supposed to have fired and then count the charges left in his revolver."

Wilson, who was still sitting on the table, abruptly put a hand out for the weapon that lay beside him. But the next movement was the most unexpected of all, for the prince standing in the doorway pa.s.sed suddenly from the dignity of a statue to the swiftness of an acrobat and rent the revolver out of the detective's hand.

"You dog!" he cried. "So you are the type of English truth, as I am of Irish tragedy--you who come to kill me, wading through the blood of your brethren. If they had fallen in a feud on the hillside, it would be called murder, and yet your sin might be forgiven you. But I, who am innocent, I was to be slain with ceremony. There would be long speeches and patient judges listening to my vain plea of innocence, noting down my despair and disregarding it. Yes, that is what I call a.s.sa.s.sination. But killing may be no murder; there is one shot left in this little gun, and I know where it should go."

Wilson turned quickly on the table, and even as he turned he twisted in agony, for Michael shot him through the body where he sat, so that he tumbled off the table like lumber.

The police rushed to lift him; Sir Walter stood speechless; and then, with a strange and weary gesture, Horne Fisher spoke.

"You are indeed a type of the Irish tragedy," he said. "You were entirely in the right, and you have put yourself in the wrong."

The prince's face was like marble for a s.p.a.ce then there dawned in his eyes a light not unlike that of despair. He laughed suddenly and flung the smoking pistol on the ground.

"I am indeed in the wrong," he said. "I have committed a crime that may justly bring a curse on me and my children."

Horne Fisher did not seem entirely satisfied with this very sudden repentance; he kept his eyes on the man and only said, in a low voice, "What crime do you mean?"

"I have helped English justice," replied Prince Michael. "I have avenged your king's officers; I have done the work of his hangman.

For that truly I deserve to be hanged."

And he turned to the police with a gesture that did not so much surrender to them, but rather command them to arrest him.

This was the story that Horne Fisher told to Harold March, the journalist, many years after, in a little, but luxurious, restaurant near Piccadilly. He had invited March to dinner some time after the affair he called "The Face in the Target," and the conversation had naturally turned on that mystery and afterward on earlier memories of Fisher's life and the way in which he was led to study such problems as those of Prince Michael. Horne Fisher was fifteen years older; his thin hair had faded to frontal baldness, and his long, thin hands dropped less with affectation and more with fatigue. And he told the story of the Irish adventure of his youth, because it recorded the first occasion on which he had ever come in contact with crime, or discovered how darkly and how terribly crime can be entangled with law.

"Hooker Wilson was the first criminal I ever knew, and he was a policeman," explained Fisher, twirling his wine gla.s.s. "And all my life has been a mixed-up business of the sort. He was a man of very real talent, and perhaps genius, and well worth studying, both as a detective and a criminal. His white face and red hair were typical of him, for he was one of those who are cold and yet on fire for fame; and he could control anger, but not ambition. He swallowed the snubs of his superiors in that first quarrel, though he boiled with resentment; but when he suddenly saw the two heads dark against the dawn and framed in the two windows, he could not miss the chance, not only of revenge, but of the removal of the two obstacles to his promotion. He was a dead shot and counted on silencing both, though proof against him would have been hard in any case. But, as a matter of fact, he had a narrow escape, in the case of Nolan, who lived just long enough to say, 'Wilson' and point. We thought he was summoning help for his comrade, but he was really denouncing his murderer. After that it was easy to throw down the ladder above him (for a man up a ladder cannot see clearly what is below and behind) and to throw himself on the ground as another victim of the catastrophe.

"But there was mixed up with his murderous ambition a real belief, not only in his own talents, but in his own theories. He did believe in what he called a fresh eye, and he did want scope for fresh methods. There was something in his view, but it failed where such things commonly fail, because the fresh eye cannot see the unseen.

It is true about the ladder and the scarecrow, but not about the life and the soul; and he made a bad mistake about what a man like Michael would do when he heard a woman scream. All Michael's very vanity and vainglory made him rush out at once; he would have walked into Dublin Castle for a lady's glove. Call it his pose or what you will, but he would have done it. What happened when he met her is another story, and one we may never know, but from tales I've heard since, they must have been reconciled. Wilson was wrong there; but there was something, for all that, in his notion that the newcomer sees most, and that the man on the spot may know too much to know anything. He was right about some things. He was right about me."

"About you?" asked Harold March in some wonder.

"I am the man who knows too much to know anything, or, at any rate, to do anything," said Horne Fisher. "I don't mean especially about Ireland. I mean about England. I mean about the whole way we are governed, and perhaps the only way we can be governed. You asked me just now what became of the survivors of that tragedy. Well, Wilson recovered and we managed to persuade him to retire. But we had to pension that d.a.m.nable murderer more magnificently than any hero who ever fought for England. I managed to save Michael from the worst, but we had to send that perfectly innocent man to penal servitude for a crime we know he never committed, and it was only afterward that we could connive in a sneakish way at his escape. And Sir Walter Carey is Prime Minister of this country, which he would probably never have been if the truth had been told of such a horrible scandal in his department. It might have done for us altogether in Ireland; it would certainly have done for him. And he is my father's old friend, and has always smothered me with kindness. I am too tangled up with the whole thing, you see, and I was certainly never born to set it right. You look distressed, not to say shocked, and I'm not at all offended at it. Let us change the subject by all means, if you like. What do you think of this Burgundy? It's rather a discovery of mine, like the restaurant itself."

And he proceeded to talk learnedly and luxuriantly on all the wines of the world; on which subject, also, some moralists would consider that he knew too much.

III. THE SOUL OF THE SCHOOLBOY

A large map of London would be needed to display the wild and zigzag course of one day's journey undertaken by an uncle and his nephew; or, to speak more truly, of a nephew and his uncle. For the nephew, a schoolboy on a holiday, was in theory the G.o.d in the car, or in the cab, tram, tube, and so on, while his uncle was at most a priest dancing before him and offering sacrifices. To put it more soberly, the schoolboy had something of the stolid air of a young duke doing the grand tour, while his elderly relative was reduced to the position of a courier, who nevertheless had to pay for everything like a patron. The schoolboy was officially known as Summers Minor, and in a more social manner as Stinks, the only public tribute to his career as an amateur photographer and electrician. The uncle was the Rev. Thomas Twyford, a lean and lively old gentleman with a red, eager face and white hair. He was in the ordinary way a country clergyman, but he was one of those who achieve the paradox of being famous in an obscure way, because they are famous in an obscure world. In a small circle of ecclesiastical archaeologists, who were the only people who could even understand one another's discoveries, he occupied a recognized and respectable place. And a critic might have found even in that day's journey at least as much of the uncle's hobby as of the nephew's holiday.

His original purpose had been wholly paternal and festive. But, like many other intelligent people, he was not above the weakness of playing with a toy to amuse himself, on the theory that it would amuse a child. His toys were crowns and miters and croziers and swords of state; and he had lingered over them, telling himself that the boy ought to see all the sights of London. And at the end of the day, after a tremendous tea, he rather gave the game away by winding up with a visit in which hardly any human boy could be conceived as taking an interest--an underground chamber supposed to have been a chapel, recently excavated on the north bank of the Thames, and containing literally nothing whatever but one old silver coin. But the coin, to those who knew, was more solitary and splendid than the Koh-i-noor. It was Roman, and was said to bear the head of St. Paul; and round it raged the most vital controversies about the ancient British Church. It could hardly be denied, however, that the controversies left Summers Minor comparatively cold.

Indeed, the things that interested Summers Minor, and the things that did not interest him, had mystified and amused his uncle for several hours. He exhibited the English schoolboy's startling ignorance and startling knowledge--knowledge of some special cla.s.sification in which he can generally correct and confound his elders. He considered himself ent.i.tled, at Hampton Court on a holiday, to forget the very names of Cardinal Wolsey or William of Orange; but he could hardly be dragged from some details about the arrangement of the electric bells in the neighboring hotel. He was solidly dazed by Westminster Abbey, which is not so unnatural since that church became the lumber room of the larger and less successful statuary of the eighteenth century. But he had a magic and minute knowledge of the Westminster omnibuses, and indeed of the whole omnibus system of London, the colors and numbers of which he knew as a herald knows heraldry. He would cry out against a momentary confusion between a light-green Paddington and a dark-green Bayswater vehicle, as his uncle would at the identification of a Greek ikon and a Roman image.

"Do you collect omnibuses like stamps?" asked his uncle. "They must need a rather large alb.u.m. Or do you keep them in your locker?"

"I keep them in my head," replied the nephew, with legitimate firmness.

"It does you credit, I admit," replied the clergyman. "I suppose it were vain to ask for what purpose you have learned that out of a thousand things. There hardly seems to be a career in it, unless you could be permanently on the pavement to prevent old ladies getting into the wrong bus. Well, we must get out of this one, for this is our place. I want to show you what they call St. Paul's Penny."

"Is it like St. Paul's Cathedral?" asked the youth with resignation, as they alighted.

At the entrance their eyes were arrested by a singular figure evidently hovering there with a similar anxiety to enter. It was that of a dark, thin man in a long black robe rather like a ca.s.sock; but the black cap on his head was of too strange a shape to be a biretta. It suggested, rather, some archaic headdress of Persia or Babylon. He had a curious black beard appearing only at the corners of his chin, and his large eyes were oddly set in his face like the flat decorative eyes painted in old Egyptian profiles. Before they had gathered more than a general impression of him, he had dived into the doorway that was their own destination.

Nothing could be seen above ground of the sunken sanctuary except a strong wooden hut, of the sort recently run up for many military and official purposes, the wooden floor of which was indeed a mere platform over the excavated cavity below. A soldier stood as a sentry outside, and a superior soldier, an Anglo-Indian officer of distinction, sat writing at the desk inside. Indeed, the sightseers soon found that this particular sight was surrounded with the most extraordinary precautions. I have compared the silver coin to the Koh-i-noor, and in one sense it was even conventionally comparable, since by a historical accident it was at one time almost counted among the Crown jewels, or at least the Crown relics, until one of the royal princes publicly restored it to the shrine to which it was supposed to belong. Other causes combined to concentrate official vigilance upon it; there had been a scare about spies carrying explosives in small objects, and one of those experimental orders which pa.s.s like waves over bureaucracy had decreed first that all visitors should change their clothes for a sort of official sackcloth, and then (when this method caused some murmurs) that they should at least turn out their pockets. Colonel Morris, the officer in charge, was a short, active man with a grim and leathery face, but a lively and humorous eye--a contradiction borne out by his conduct, for he at once derided the safeguards and yet insisted on them.

"I don't care a b.u.t.ton myself for Paul's Penny, or such things," he admitted in answer to some antiquarian openings from the clergyman who was slightly acquainted with him, "but I wear the King's coat, you know, and it's a serious thing when the King's uncle leaves a thing here with his own hands under my charge. But as for saints and relics and things, I fear I'm a bit of a Voltairian; what you would call a skeptic."

"I'm not sure it's even skeptical to believe in the royal family and not in the 'Holy' Family," replied Mr. Twyford. "But, of course, I can easily empty my pockets, to show I don't carry a bomb."

The little heap of the parson's possessions which he left on the table consisted chiefly of papers, over and above a pipe and a tobacco pouch and some Roman and Saxon coins. The rest were catalogues of old books, and pamphlets, like one ent.i.tled "The Use of Sarum," one glance at which was sufficient both for the colonel and the schoolboy. They could not see the use of Sarum at all. The contents of the boy's pockets naturally made a larger heap, and included marbles, a ball of string, an electric torch, a magnet, a small catapult, and, of course, a large pocketknife, almost to be described as a small tool box, a complex apparatus on which he seemed disposed to linger, pointing out that it included a pair of nippers, a tool for punching holes in wood, and, above all, an instrument for taking stones out of a horse's hoof. The comparative absence of any horse he appeared to regard as irrelevant, as if it were a mere appendage easily supplied. But when the turn came of the gentleman in the black gown, he did not turn out his pockets, but merely spread out his hands.

"I have no possessions," he said.

"I'm afraid I must ask you to empty your pockets and make sure,"

observed the colonel, gruffly.

"I have no pockets," said the stranger.