Almost before they could take it in a short figure in French uniform had walked up to their table like the wind, and sat down with a sort of thump.

"I have extraordinary news," said the Duc de Valognes. "I have just come from this Colonel of ours. He is packing up to leave the country, and he asks us to make his excuses sur le terrain."

"What?" cried Flambeau, with an incredulity quite frightful—"apologize?"

"Yes," said the Duke gruffly; "then and there—before everybody—when the swords are drawn. And you and I have to do it while he is leaving the country."

"But what can this mean?" cried Flambeau. "He can't be afraid of that little Hirsch! Confound it!" he cried, in a kind of rational rage; "nobody could be afraid of Hirsch!"

"I believe it's some plot!" snapped Valognes—"some plot of the Jews and Freemasons. It's meant to work up glory for Hirsch..."

The face of Father Brown was commonplace, but curiously contented; it could shine with ignorance as well as with knowledge. But there was always one flash when the foolish mask fell, and the wise mask fitted itself in its place; and Flambeau, who knew his friend, knew that his friend had suddenly understood. Brown said nothing, but finished his plate of fish.

"Where did you last see our precious Colonel?" asked Flambeau, irritably.

"He's round at the Hotel Saint Louis by the Elysee, where we drove with him. He's packing up, I tell you."

"Will he be there still, do you think?" asked Flambeau, frowning at the table.

"I don't think he can get away yet," replied the Duke; "he's packing to go a long journey..."

"No," said Father Brown, quite simply, but suddenly standing up, "for a very short journey. For one of the shortest, in fact. But we may still be in time to catch him if we go there in a motor-cab."

Nothing more could be got out of him until the cab swept round the corner by the Hotel Saint Louis, where they got out, and he led the party up a side lane already in deep shadow with the growing dusk. Once, when the Duke impatiently asked whether Hirsch was guilty of treason or not, he answered rather absently: "No; only of ambition—like Caesar." Then he somewhat inconsequently added: "He lives a very lonely life; he has had to do everything for himself."

"Well, if he's ambitious, he ought to be satisfied now," said Flambeau rather bitterly. "All Paris will cheer him now our cursed Colonel has turned tail."

"Don't talk so loud," said Father Brown, lowering his voice, "your cursed Colonel is just in front."

The other two started and shrank farther back into the shadow of the wall, for the sturdy figure of their runaway principal could indeed be seen shuffling along in the twilight in front, a bag in each hand. He looked much the same as when they first saw him, except that he had changed his picturesque mountaineering knickers for a conventional pair of trousers. It was clear he was already escaping from the hotel.

The lane down which they followed him was one of those that seem to be at the back of things, and look like the wrong side of the stage scenery. A colourless, continuous wall ran down one flank of it, interrupted at intervals by dull-hued and dirt-stained doors, all shut fast and featureless save for the chalk scribbles of some passing gamin. The tops of trees, mostly rather depressing evergreens, showed at intervals over the top of the wall, and beyond them in the grey and purple gloaming could be seen the back of some long terrace of tall Parisian houses, really comparatively close, but somehow looking as inaccessible as a range of marble mountains. On the other side of the lane ran the high gilt railings of a gloomy park.

Flambeau was looking round him in rather a weird way. "Do you know," he said, "there is something about this place that—"

"Hullo!" called out the Duke sharply; "that fellow's disappeared. Vanished, like a blasted fairy!"

"He has a key," explained their clerical friend. "He's only gone into one of these garden doors," and as he spoke they heard one of the dull wooden doors close again with a click in front of them.

Flambeau strode up to the door thus shut almost in his face, and stood in front of it for a moment, biting his black moustache in a fury of curiosity. Then he threw up his long arms and swung himself aloft like a monkey and stood on the top of the wall, his enormous figure dark against the purple sky, like the dark tree-tops.

The Duke looked at the priest. "Dubosc's escape is more elaborate than we thought," he said; "but I suppose he is escaping from France."

"He is escaping from everywhere," answered Father Brown.

Valognes's eyes brightened, but his voice sank. "Do you mean suicide?" he asked.

"You will not find his body," replied the other.

A kind of cry came from Flambeau on the wall above. "My God," he exclaimed in French, "I know what this place is now! Why, it's the back of the street where old Hirsch lives. I thought I could recognize the back of a house as well as the back of a man."

"And Dubosc's gone in there!" cried the Duke, smiting his hip. "Why, they'll meet after all!" And with sudden Gallic vivacity he hopped up on the wall beside Flambeau and sat there positively kicking his legs with excitement. The priest alone remained below, leaning against the wall, with his back to the whole theatre of events, and looking wistfully across to the park palings and the twinkling, twilit trees.

The Duke, however stimulated, had the instincts of an aristocrat, and desired rather to stare at the house than to spy on it; but Flambeau, who had the instincts of a burglar (and a detective), had already swung himself from the wall into the fork of a straggling tree from which he could crawl quite close to the only illuminated window in the back of the high dark house. A red blind had been pulled down over the light, but pulled crookedly, so that it gaped on one side, and by risking his neck along a branch that looked as treacherous as a twig, Flambeau could just see Colonel Dubosc walking about in a brilliantly-lighted and luxurious bedroom. But close as Flambeau was to the house, he heard the words of his colleagues by the wall, and repeated them in a low voice.

"Yes, they will meet now after all!"

"They will never meet," said Father Brown. "Hirsch was right when he said that in such an affair the principals must not meet. Have you read a queer psychological story by Henry James, of two persons who so perpetually missed meeting each other by accident that they began to feel quite frightened of each other, and to think it was fate? This is something of the kind, but more curious."

"There are people in Paris who will cure them of such morbid fancies," said Valognes vindictively. "They will jolly well have to meet if we capture them and force them to fight."

"They will not meet on the Day of Judgement," said the priest. "If God Almighty held the truncheon of the lists, if St Michael blew the trumpet for the swords to cross—even then, if one of them stood ready, the other would not come."

"Oh, what does all this mysticism mean?" cried the Duc de Valognes, impatiently; "why on earth shouldn't they meet like other people?"

"They are the opposite of each other," said Father Brown, with a queer kind of smile. "They contradict each other. They cancel out, so to speak."

He continued to gaze at the darkening trees opposite, but Valognes turned his head sharply at a suppressed exclamation from Flambeau. That investigator, peering into the lighted room, had just seen the Colonel, after a pace or two, proceed to take his coat off. Flambeau's first thought was that this really looked like a fight; but he soon dropped the thought for another. The solidity and squareness of Dubosc's chest and shoulders was all a powerful piece of padding and came off with his coat. In his shirt and trousers he was a comparatively slim gentleman, who walked across the bedroom to the bathroom with no more pugnacious purpose than that of washing himself. He bent over a basin, dried his dripping hands and face on a towel, and turned again so that the strong light fell on his face. His brown complexion had gone, his big black moustache had gone; he—was clean-shaven and very pate. Nothing remained of the Colonel but his bright, hawk-like, brown eyes. Under the wall Father Brown was going on in heavy meditation, as if to himself.

"It is all just like what I was saying to Flambeau. These opposites won't do. They don't work. They don't fight. If it's white instead of black, and solid instead of liquid, and so on all along the line—then there's something wrong, Monsieur, there's something wrong. One of these men is fair and the other dark, one stout and the other slim, one strong and the other weak. One has a moustache and no beard, so you can't see his mouth; the other has a beard and no moustache, so you can't see his chin. One has hair cropped to his skull, but a scarf to hide his neck; the other has low shirt-collars, but long hair to bide his skull. It's all too neat and correct, Monsieur, and there's something wrong. Things made so opposite are things that cannot quarrel. Wherever the one sticks out the other sinks in. Like a face and a mask, like a lock and a key..."

Flambeau was peering into the house with a visage as white as a sheet. The occupant of the room was standing with his back to him, but in front of a looking-glass, and had already fitted round his face a sort of framework of rank red hair, hanging disordered from the head and clinging round the jaws and chin while leaving the mocking mouth uncovered. Seen thus in the glass the white face looked like the face of Judas laughing horribly and surrounded by capering flames of hell. For a spasm Flambeau saw the fierce, red-brown eyes dancing, then they were covered with a pair of blue spectacles. Slipping on a loose black coat, the figure vanished towards the front of the house. A few moments later a roar of popular applause from the street beyond announced that Dr Hirsch had once more appeared upon the balcony.



FOUR — The Man in the Passage

TWO men appeared simultaneously at the two ends of a sort of passage running along the side of the Apollo Theatre in the Adelphi. The evening daylight in the streets was large and luminous, opalescent and empty. The passage was comparatively long and dark, so each man could see the other as a mere black silhouette at the other end. Nevertheless, each man knew the other, even in that inky outline; for they were both men of striking appearance and they hated each other.

The covered passage opened at one end on one of the steep streets of the Adelphi, and at the other on a terrace overlooking the sunset-coloured river. One side of the passage was a blank wall, for the building it supported was an old unsuccessful theatre restaurant, now shut up. The other side of the passage contained two doors, one at each end. Neither was what was commonly called the stage door; they were a sort of special and private stage doors used by very special performers, and in this case by the star actor and actress in the Shakespearean performance of the day. Persons of that eminence often like to have such private exits and entrances, for meeting friends or avoiding them.

The two men in question were certainly two such friends, men who evidently knew the doors and counted on their opening, for each approached the door at the upper end with equal coolness and confidence. Not, however, with equal speed; but the man who walked fast was the man from the other end of the tunnel, so they both arrived before the secret stage door almost at the same instant. They saluted each other with civility, and waited a moment before one of them, the sharper walker who seemed to have the shorter patience, knocked at the door.

In this and everything else each man was opposite and neither could be called inferior. As private persons both were handsome, capable and popular. As public persons, both were in the first public rank. But everything about them, from their glory to their good looks, was of a diverse and incomparable kind. Sir Wilson Seymour was the kind of man whose importance is known to everybody who knows. The more you mixed with the innermost ring in every polity or profession, the more often you met Sir Wilson Seymour. He was the one intelligent man on twenty unintelligent committees—on every sort of subject, from the reform of the Royal Academy to the project of bimetallism for Greater Britain. In the Arts especially he was omnipotent. He was so unique that nobody could quite decide whether he was a great aristocrat who had taken up Art, or a great artist whom the aristocrats had taken up. But you could not meet him for five minutes without realizing that you had really been ruled by him all your life.

His appearance was "distinguished" in exactly the same sense; it was at once conventional and unique. Fashion could have found no fault with his high silk hat—, yet it was unlike anyone else's hat—a little higher, perhaps, and adding something to his natural height. His tall, slender figure had a slight stoop yet it looked the reverse of feeble. His hair was silver-grey, but he did not look old; it was worn longer than the common yet he did not look effeminate; it was curly but it did not look curled. His carefully pointed beard made him look more manly and militant than otherwise, as it does in those old admirals of Velazquez with whose dark portraits his house was hung. His grey gloves were a shade bluer, his silver-knobbed cane a shade longer than scores of such gloves and canes flapped and flourished about the theatres and the restaurants.

The other man was not so tall, yet would have struck nobody as short, but merely as strong and handsome. His hair also was curly, but fair and cropped close to a strong, massive head—the sort of head you break a door with, as Chaucer said of the Miller's. His military moustache and the carriage of his shoulders showed him a soldier, but he had a pair of those peculiar frank and piercing blue eyes which are more common in sailors. His face was somewhat square, his jaw was square, his shoulders were square, even his jacket was square. Indeed, in the wild school of caricature then current, Mr Max Beerbohm had represented him as a proposition in the fourth book of Euclid.

For he also was a public man, though with quite another sort of success. You did not have to be in the best society to have heard of Captain Cutler, of the siege of Hong-Kong, and the great march across China. You could not get away from hearing of him wherever you were; his portrait was on every other postcard; his maps and battles in every other illustrated paper; songs in his honour in every other music-hall turn or on every other barrel-organ. His fame, though probably more temporary, was ten times more wide, popular and spontaneous than the other man's. In thousands of English homes he appeared enormous above England, like Nelson. Yet he had infinitely less power in England than Sir Wilson Seymour.

The door was opened to them by an aged servant or "dresser", whose broken-down face and figure and black shabby coat and trousers contrasted queerly with the glittering interior of the great actress's dressing-room. It was fitted and filled with looking-glasses at every angle of refraction, so that they looked like the hundred facets of one huge diamond—if one could get inside a diamond. The other features of luxury, a few flowers, a few coloured cushions, a few scraps of stage costume, were multiplied by all the mirrors into the madness of the Arabian Nights, and danced and changed places perpetually as the shuffling attendant shifted a mirror outwards or shot one back against the wall.

They both spoke to the dingy dresser by name, calling him Parkinson, and asking for the lady as Miss Aurora Rome. Parkinson said she was in the other room, but he would go and tell her. A shade crossed the brow of both visitors; for the other room was the private room of the great actor with whom Miss Aurora was performing, and she was of the kind that does not inflame admiration without inflaming jealousy. In about half a minute, however, the inner door opened, and she entered as she always did, even in private life, so that the very silence seemed to be a roar of applause, and one well-deserved. She was clad in a somewhat strange garb of peacock green and peacock blue satins, that gleamed like blue and green metals, such as delight children and aesthetes, and her heavy, hot brown hair framed one of those magic faces which are dangerous to all men, but especially to boys and to men growing grey. In company with her male colleague, the great American actor, Isidore Bruno, she was producing a particularly poetical and fantastic interpretation of Midsummer Night's Dream: in which the artistic prominence was given to Oberon and Titania, or in other words to Bruno and herself. Set in dreamy and exquisite scenery, and moving in mystical dances, the green costume, like burnished beetle-wings, expressed all the elusive individuality of an elfin queen. But when personally confronted in what was still broad daylight, a man looked only at the woman's face.

She greeted both men with the beaming and baffling smile which kept so many males at the same just dangerous distance from her. She accepted some flowers from Cutler, which were as tropical and expensive as his victories; and another sort of present from Sir Wilson Seymour, offered later on and more nonchalantly by that gentleman. For it was against his breeding to show eagerness, and against his conventional unconventionality to give anything so obvious as flowers. He had picked up a trifle, he said, which was rather a curiosity, it was an ancient Greek dagger of the Mycenaean Epoch, and might well have been worn in the time of Theseus and Hippolyta. It was made of brass like all the Heroic weapons, but, oddly enough, sharp enough to prick anyone still. He had really been attracted to it by the leaf-like shape; it was as perfect as a Greek vase. If it was of any interest to Miss Rome or could come in anywhere in the play, he hoped she would—

The inner door burst open and a big figure appeared, who was more of a contrast to the explanatory Seymour than even Captain Cutler. Nearly six-foot-six, and of more than theatrical thews and muscles, Isidore Bruno, in the gorgeous leopard skin and golden-brown garments of Oberon, looked like a barbaric god. He leaned on a sort of hunting-spear, which across a theatre looked a slight, silvery wand, but which in the small and comparatively crowded room looked as plain as a pike-staff—and as menacing. His vivid black eyes rolled volcanically, his bronzed face, handsome as it was, showed at that moment a combination of high cheekbones with set white teeth, which recalled certain American conjectures about his origin in the Southern plantations.

"Aurora," he began, in that deep voice like a drum of passion that had moved so many audiences, "will you—"

He stopped indecisively because a sixth figure had suddenly presented itself just inside the doorway—a figure so incongruous in the scene as to be almost comic. It was a very short man in the black uniform of the Roman secular clergy, and looking (especially in such a presence as Bruno's and Aurora's) rather like the wooden Noah out of an ark. He did not, however, seem conscious of any contrast, but said with dull civility: "I believe Miss Rome sent for me."

A shrewd observer might have remarked that the emotional temperature rather rose at so unemotional an interruption. The detachment of a professional celibate seemed to reveal to the others that they stood round the woman as a ring of amorous rivals; just as a stranger coming in with frost on his coat will reveal that a room is like a furnace. The presence of the one man who did not care about her increased Miss Rome's sense that everybody else was in love with her, and each in a somewhat dangerous way: the actor with all the appetite of a savage and a spoilt child; the soldier with all the simple selfishness of a man of will rather than mind; Sir Wilson with that daily hardening concentration with which old Hedonists take to a hobby; nay, even the abject Parkinson, who had known her before her triumphs, and who followed her about the room with eyes or feet, with the dumb fascination of a dog.

A shrewd person might also have noted a yet odder thing. The man like a black wooden Noah (who was not wholly without shrewdness) noted it with a considerable but contained amusement. It was evident that the great Aurora, though by no means indifferent to the admiration of the other sex, wanted at this moment to get rid of all the men who admired her and be left alone with the man who did not—did not admire her in that sense at least; for the little priest did admire and even enjoy the firm feminine diplomacy with which she set about her task. There was, perhaps, only one thing that Aurora Rome was clever about, and that was one half of humanity—the other half. The little priest watched, like a Napoleonic campaign, the swift precision of her policy for expelling all while banishing none. Bruno, the big actor, was so babyish that it was easy to send him off in brute sulks, banging the door. Cutler, the British officer, was pachydermatous to ideas, but punctilious about behaviour. He would ignore all hints, but he would die rather than ignore a definite commission from a lady. As to old Seymour, he had to be treated differently; he had to be left to the last. The only way to move him was to appeal to him in confidence as an old friend, to let him into the secret of the clearance. The priest did really admire Miss Rome as she achieved all these three objects in one selected action.

She went across to Captain Cutler and said in her sweetest manner: "I shall value all these flowers, because they must be your favourite flowers. But they won't be complete, you know, without my favourite flower. Do go over to that shop round the corner and get me some lilies-of-the-valley, and then it will be quite lovely."

The first object of her diplomacy, the exit of the enraged Bruno, was at once achieved. He had already handed his spear in a lordly style, like a sceptre, to the piteous Parkinson, and was about to assume one of the cushioned seats like a throne. But at this open appeal to his rival there glowed in his opal eyeballs all the sensitive insolence of the slave; he knotted his enormous brown fists for an instant, and then, dashing open the door, disappeared into his own apartments beyond. But meanwhile Miss Rome's experiment in mobilizing the British Army had not succeeded so simply as seemed probable. Cutler had indeed risen stiffly and suddenly, and walked towards the door, hatless, as if at a word of command. But perhaps there was something ostentatiously elegant about the languid figure of Seymour leaning against one of the looking-glasses that brought him up short at the entrance, turning his head this way and that like a bewildered bulldog.

"I must show this stupid man where to go," said Aurora in a whisper to Seymour, and ran out to the threshold to speed the parting guest.

Seymour seemed to be listening, elegant and unconscious as was his posture, and he seemed relieved when he heard the lady call out some last instructions to the Captain, and then turn sharply and run laughing down the passage towards the other end, the end on the terrace above the Thames. Yet a second or two after Seymour's brow darkened again. A man in his position has so many rivals, and he remembered that at the other end of the passage was the corresponding entrance to Bruno's private room. He did not lose his dignity; he said some civil words to Father Brown about the revival of Byzantine architecture in the Westminster Cathedral, and then, quite naturally, strolled out himself into the upper end of the passage. Father Brown and Parkinson were left alone, and they were neither of them men with a taste for superfluous conversation. The dresser went round the room, pulling out looking-glasses and pushing them in again, his dingy dark coat and trousers looking all the more dismal since he was still holding the festive fairy spear of King Oberon. Every time he pulled out the frame of a new glass, a new black figure of Father Brown appeared; the absurd glass chamber was full of Father Browns, upside down in the air like angels, turning somersaults like acrobats, turning their backs to everybody like very rude persons.

Father Brown seemed quite unconscious of this cloud of witnesses, but followed Parkinson with an idly attentive eye till he took himself and his absurd spear into the farther room of Bruno. Then he abandoned himself to such abstract meditations as always amused him—calculating the angles of the mirrors, the angles of each refraction, the angle at which each must fit into the wall...when he heard a strong but strangled cry.

He sprang to his feet and stood rigidly listening. At the same instant Sir Wilson Seymour burst back into the room, white as ivory. "Who's that man in the passage?" he cried. "Where's that dagger of mine?"

Before Father Brown could turn in his heavy boots Seymour was plunging about the room looking for the weapon. And before he could possibly find that weapon or any other, a brisk running of feet broke upon the pavement outside, and the square face of Cutler was thrust into the same doorway. He was still grotesquely grasping a bunch of lilies-of-the-valley. "What's this?" he cried. "What's that creature down the passage? Is this some of your tricks?"

"My tricks!" hissed his pale rival, and made a stride towards him.

In the instant of time in which all this happened Father Brown stepped out into the top of the passage, looked down it, and at once walked briskly towards what he saw.

At this the other two men dropped their quarrel and darted after him, Cutler calling out: "What are you doing? Who are you?"

"My name is Brown," said the priest sadly, as he bent over something and straightened himself again. "Miss Rome sent for me, and I came as quickly as I could. I have come too late."

The three men looked down, and in one of them at least the life died in that late light of afternoon. It ran along the passage like a path of gold, and in the midst of it Aurora Rome lay lustrous in her robes of green and gold, with her dead face turned upwards. Her dress was torn away as in a struggle, leaving the right shoulder bare, but the wound from which the blood was welling was on the other side. The brass dagger lay flat and gleaming a yard or so away.

There was a blank stillness for a measurable time, so that they could hear far off a flower-girl's laugh outside Charing Cross, and someone whistling furiously for a taxicab in one of the streets off the Strand. Then the Captain, with a movement so sudden that it might have been passion or play-acting, took Sir Wilson Seymour by the throat.

Seymour looked at him steadily without either fight or fear. "You need not kill me," he said in a voice quite cold; "I shall do that on my own account."

The Captain's hand hesitated and dropped; and the other added with the same icy candour: "If I find I haven't the nerve to do it with that dagger I can do it in a month with drink."

"Drink isn't good enough for me," replied Cutler, "but I'll have blood for this before I die. Not yours—but I think I know whose."

And before the others could appreciate his intention he snatched up the dagger, sprang at the other door at the lower end of the passage, burst it open, bolt and all, and confronted Bruno in his dressing-room. As he did so, old Parkinson tottered in his wavering way out of the door and caught sight of the corpse lying in the passage. He moved shakily towards it; looked at it weakly with a working face; then moved shakily back into the dressing-room again, and sat down suddenly on one of the richly cushioned chairs. Father Brown instantly ran across to him, taking no notice of Cutler and the colossal actor, though the room already rang with their blows and they began to struggle for the dagger. Seymour, who retained some practical sense, was whistling for the police at the end of the passage.

When the police arrived it was to tear the two men from an almost ape-like grapple; and, after a few formal inquiries, to arrest Isidore Bruno upon a charge of murder, brought against him by his furious opponent. The idea that the great national hero of the hour had arrested a wrongdoer with his own hand doubtless had its weight with the police, who are not without elements of the journalist. They treated Cutler with a certain solemn attention, and pointed out that he had got a slight slash on the hand. Even as Cutler bore him back across tilted chair and table, Bruno had twisted the dagger out of his grasp and disabled him just below the wrist. The injury was really slight, but till he was removed from the room the half-savage prisoner stared at the running blood with a steady smile.

"Looks a cannibal sort of chap, don't he?" said the constable confidentially to Cutler.

Cutler made no answer, but said sharply a moment after: "We must attend to the...the death..." and his voice escaped from articulation.

"The two deaths," came in the voice of the priest from the farther side of the room. "This poor fellow was gone when I got across to him." And he stood looking down at old Parkinson, who sat in a black huddle on the gorgeous chair. He also had paid his tribute, not without eloquence, to the woman who had died.

The silence was first broken by Cutler, who seemed not untouched by a rough tenderness. "I wish I was him," he said huskily. "I remember he used to watch her wherever she walked more than—anybody. She was his air, and he's dried up. He's just dead."

"We are all dead," said Seymour in a strange voice, looking down the road.

They took leave of Father Brown at the corner of the road, with some random apologies for any rudeness they might have shown. Both their faces were tragic, but also cryptic.

The mind of the little priest was always a rabbit-warren of wild thoughts that jumped too quickly for him to catch them. Like the white tail of a rabbit he had the vanishing thought that he was certain of their grief, but not so certain of their innocence.

"We had better all be going," said Seymour heavily; "we have done all we can to help."

"Will you understand my motives," asked Father Brown quietly, "if I say you have done all you can to hurt?"

They both started as if guiltily, and Cutler said sharply: "To hurt whom?"

"To hurt yourselves," answered the priest. "I would not add to your troubles if it weren't common justice to warn you. You've done nearly everything you could do to hang yourselves, if this actor should be acquitted. They'll be sure to subpoena me; I shall be bound to say that after the cry was heard each of you rushed into the room in a wild state and began quarrelling about a dagger. As far as my words on oath can go, you might either of you have done it. You hurt yourselves with that; and then Captain Cutler must have hurt himself with the dagger."

"Hurt myself!" exclaimed the Captain, with contempt. "A silly little scratch."

"Which drew blood," replied the priest, nodding. "We know there's blood on the brass now. And so we shall never know whether there was blood on it before."

There was a silence; and then Seymour said, with an emphasis quite alien to his daily accent: "But I saw a man in the passage."

"I know you did," answered the cleric Brown with a face of wood, "so did Captain Cutler. That's what seems so improbable."

Before either could make sufficient sense of it even to answer, Father Brown had politely excused himself and gone stumping up the road with his stumpy old umbrella.

As modern newspapers are conducted, the most honest and most important news is the police news. If it be true that in the twentieth century more space is given to murder than to politics, it is for the excellent reason that murder is a more serious subject. But even this would hardly explain the enormous omnipresence and widely distributed detail of "The Bruno Case," or "The Passage Mystery," in the Press of London and the provinces. So vast was the excitement that for some weeks the Press really told the truth; and the reports of examination and cross-examination, if interminable, even if intolerable are at least reliable. The true reason, of course, was the coincidence of persons. The victim was a popular actress; the accused was a popular actor; and the accused had been caught red-handed, as it were, by the most popular soldier of the patriotic season. In those extraordinary circumstances the Press was paralysed into probity and accuracy; and the rest of this somewhat singular business can practically be recorded from reports of Bruno's trial.

The trial was presided over by Mr Justice Monkhouse, one of those who are jeered at as humorous judges, but who are generally much more serious than the serious judges, for their levity comes from a living impatience of professional solemnity; while the serious judge is really filled with frivolity, because he is filled with vanity. All the chief actors being of a worldly importance, the barristers were well balanced; the prosecutor for the Crown was Sir Walter Cowdray, a heavy, but weighty advocate of the sort that knows how to seem English and trustworthy, and how to be rhetorical with reluctance. The prisoner was defended by Mr Patrick Butler, K.C., who was mistaken for a mere flaneur by those who misunderstood the Irish character—and those who had not been examined by him. The medical evidence involved no contradictions, the doctor, whom Seymour had summoned on the spot, agreeing with the eminent surgeon who had later examined the body. Aurora Rome had been stabbed with some sharp instrument such as a knife or dagger; some instrument, at least, of which the blade was short. The wound was just over the heart, and she had died instantly. When the doctor first saw her she could hardly have been dead for twenty minutes. Therefore when Father Brown found her she could hardly have been dead for three.

Some official detective evidence followed, chiefly concerned with the presence or absence of any proof of a struggle; the only suggestion of this was the tearing of the dress at the shoulder, and this did not seem to fit in particularly well with the direction and finality of the blow. When these details had been supplied, though not explained, the first of the important witnesses was called.

Sir Wilson Seymour gave evidence as he did everything else that he did at all—not only well, but perfectly. Though himself much more of a public man than the judge, he conveyed exactly the fine shade of self-effacement before the King's justice; and though everyone looked at him as they would at the Prime Minister or the Archbishop of Canterbury, they could have said nothing of his part in it but that it was that of a private gentleman, with an accent on the noun. He was also refreshingly lucid, as he was on the committees. He had been calling on Miss Rome at the theatre; he had met Captain Cutler there; they had been joined for a short time by the accused, who had then returned to his own dressing-room; they had then been joined by a Roman Catholic priest, who asked for the deceased lady and said his name was Brown. Miss Rome had then gone just outside the theatre to the entrance of the passage, in order to point out to Captain Cutler a flower-shop at which he was to buy her some more flowers; and the witness had remained in the room, exchanging a few words with the priest. He had then distinctly heard the deceased, having sent the Captain on his errand, turn round laughing and run down the passage towards its other end, where was the prisoner's dressing-room. In idle curiosity as to the rapid movement of his friends, he had strolled out to the head of the passage himself and looked down it towards the prisoner's door. Did he see anything in the passage? Yes; he saw something in the passage.

Sir Walter Cowdray allowed an impressive interval, during which the witness looked down, and for all his usual composure seemed to have more than his usual pallor. Then the barrister said in a lower voice, which seemed at once sympathetic and creepy: "Did you see it distinctly?"

Sir Wilson Seymour, however moved, had his excellent brains in full working-order. "Very distinctly as regards its outline, but quite indistinctly, indeed not at all, as regards the details inside the outline. The passage is of such length that anyone in the middle of it appears quite black against the light at the other end." The witness lowered his steady eyes once more and added: "I had noticed the fact before, when Captain Cutler first entered it." There was another silence, and the judge leaned forward and made a note.

"Well," said Sir Walter patiently, "what was the outline like? Was it, for instance, like the figure of the murdered woman?"

"Not in the least," answered Seymour quietly.

"What did it look like to you?"

"It looked to me," replied the witness, "like a tall man."

Everyone in court kept his eyes riveted on his pen, or his umbrella-handle, or his book, or his boots or whatever he happened to be looking at. They seemed to be holding their eyes away from the prisoner by main force; but they felt his figure in the dock, and they felt it as gigantic. Tall as Bruno was to the eye, he seemed to swell taller and taller when an eyes had been torn away from him.

Cowdray was resuming his seat with his solemn face, smoothing his black silk robes, and white silk whiskers. Sir Wilson was leaving the witness-box, after a few final particulars to which there were many other witnesses, when the counsel for the defence sprang up and stopped him.

"I shall only detain you a moment," said Mr Butler, who was a rustic-looking person with red eyebrows and an expression of partial slumber. "Will you tell his lordship how you knew it was a man?"

A faint, refined smile seemed to pass over Seymour's features. "I'm afraid it is the vulgar test of trousers," he said. "When I saw daylight between the long legs I was sure it was a man, after all."

Butler's sleepy eyes opened as suddenly as some silent explosion. "After all!" he repeated slowly. "So you did think at first it was a woman?"

Seymour looked troubled for the first time. "It is hardly a point of fact," he said, "but if his lordship would like me to answer for my impression, of course I shall do so. There was something about the thing that was not exactly a woman and yet was not quite a man; somehow the curves were different. And it had something that looked like long hair."

"Thank you," said Mr Butler, K.C., and sat down suddenly, as if he had got what he wanted.

Captain Cutler was a far less plausible and composed witness than Sir Wilson, but his account of the opening incidents was solidly the same. He described the return of Bruno to his dressing-room, the dispatching of himself to buy a bunch of lilies-of-the-valley, his return to the upper end of the passage, the thing he saw in the passage, his suspicion of Seymour, and his struggle with Bruno. But he could give little artistic assistance about the black figure that he and Seymour had seen. Asked about its outline, he said he was no art critic—with a somewhat too obvious sneer at Seymour. Asked if it was a man or a woman, he said it looked more like a beast—with a too obvious snarl at the prisoner. But the man was plainly shaken with sorrow and sincere anger, and Cowdray quickly excused him from confirming facts that were already fairly clear.

The defending counsel also was again brief in his cross-examination; although (as was his custom) even in being brief, he seemed to take a long time about it. "You used a rather remarkable expression," he said, looking at Cutler sleepily. "What do you mean by saying that it looked more like a beast than a man or a woman?"

Cutler seemed seriously agitated. "Perhaps I oughtn't to have said that," he said; "but when the brute has huge humped shoulders like a chimpanzee, and bristles sticking out of its head like a pig—"

Mr Butler cut short his curious impatience in the middle. "Never mind whether its hair was like a pig's," he said, "was it like a woman's?"

"A woman's!" cried the soldier. "Great Scott, no!"

"The last witness said it was," commented the counsel, with unscrupulous swiftness. "And did the figure have any of those serpentine and semi-feminine curves to which eloquent allusion has been made? No? No feminine curves? The figure, if I understand you, was rather heavy and square than otherwise?"

"He may have been bending forward," said Cutler, in a hoarse and rather faint voice.

"Or again, he may not," said Mr Butler, and sat down suddenly for the second time.

The third, witness called by Sir Walter Cowdray was the little Catholic clergyman, so little, compared with the others, that his head seemed hardly to come above the box, so that it was like cross-examining a child. But unfortunately Sir Walter had somehow got it into his head (mostly by some ramifications of his family's religion) that Father Brown was on the side of the prisoner, because the prisoner was wicked and foreign and even partly black. Therefore he took Father Brown up sharply whenever that proud pontiff tried to explain anything; and told him to answer yes or no, and tell the plain facts without any jesuitry. When Father Brown began, in his simplicity, to say who he thought the man in the passage was, the barrister told him that he did not want his theories.

"A black shape was seen in the passage. And you say you saw the black shape. Well, what shape was it?"

Father Brown blinked as under rebuke; but he had long known the literal nature of obedience. "The shape," he said, "was short and thick, but had two sharp, black projections curved upwards on each side of the head or top, rather like horns, and—"

"Oh! the devil with horns, no doubt," ejaculated Cowdray, sitting down in triumphant jocularity. "It was the devil come to eat Protestants."

"No," said the priest dispassionately; "I know who it was."

Those in court had been wrought up to an irrational, but real sense of some monstrosity. They had forgotten the figure in the dock and thought only of the figure in the passage. And the figure in the passage, described by three capable and respectable men who had all seen it, was a shifting nightmare: one called it a woman, and the other a beast, and the other a devil....

The judge was looking at Father Brown with level and piercing eyes. "You are a most extraordinary witness," he said; "but there is something about you that makes me think you are trying to tell the truth. Well, who was the man you saw in the passage?"

"He was myself," said Father Brown.

Butler, K.C., sprang to his feet in an extraordinary stillness, and said quite calmly: "Your lordship will allow me to cross-examine?" And then, without stopping, he shot at Brown the apparently disconnected question: "You have heard about this dagger; you know the experts say the crime was committed with a short blade?"

"A short blade," assented Brown, nodding solemnly like an owl, "but a very long hilt."

Before the audience could quite dismiss the idea that the priest had really seen himself doing murder with a short dagger with a long hilt (which seemed somehow to make it more horrible), he had himself hurried on to explain.

"I mean daggers aren't the only things with short blades. Spears have short blades. And spears catch at the end of the steel just like daggers, if they're that sort of fancy spear they had in theatres; like the spear poor old Parkinson killed his wife with, just when she'd sent for me to settle their family troubles—and I came just too late, God forgive me! But he died penitent—he just died of being penitent. He couldn't bear what he'd done."

The general impression in court was that the little priest, who was gobbling away, had literally gone mad in the box. But the judge still looked at him with bright and steady eyes of interest; and the counsel for the defence went on with his questions unperturbed.

"If Parkinson did it with that pantomime spear," said Butler, "he must have thrust from four yards away. How do you account for signs of struggle, like the dress dragged off the shoulder?" He had slipped into treating his mere witness as an expert; but no one noticed it now.

"The poor lady's dress was torn," said the witness, "because it was caught in a panel that slid to just behind her. She struggled to free herself, and as she did so Parkinson came out of the prisoner's room and lunged with the spear."

"A panel?" repeated the barrister in a curious voice.

"It was a looking-glass on the other side," explained Father Brown. "When I was in the dressing-room I noticed that some of them could probably be slid out into the passage."

There was another vast and unnatural silence, and this time it was the judge who spoke. "So you really mean that when you looked down that passage, the man you saw was yourself—in a mirror?"

"Yes, my lord; that was what I was trying to say," said Brown, "but they asked me for the shape; and our hats have corners just like horns, and so I—"

The judge leaned forward, his old eyes yet more brilliant, and said in specially distinct tones: "Do you really mean to say that when Sir Wilson Seymour saw that wild what-you-call-him with curves and a woman's hair and a man's trousers, what he saw was Sir Wilson Seymour?"

"Yes, my lord," said Father Brown.

"And you mean to say that when Captain Cutler saw that chimpanzee with humped shoulders and hog's bristles, he simply saw himself?"

"Yes, my lord."

The judge leaned back in his chair with a luxuriance in which it was hard to separate the cynicism and the admiration. "And can you tell us why," he asked, "you should know your own figure in a looking-glass, when two such distinguished men don't?"

Father Brown blinked even more painfully than before; then he stammered: "Really, my lord, I don't know unless it's because I don't look at it so often."



FIVE — The Mistake of the Machine

FLAMBEAU and his friend the priest were sitting in the Temple Gardens about sunset; and their neighbourhood or some such accidental influence had turned their talk to matters of legal process. From the problem of the licence in cross-examination, their talk strayed to Roman and mediaeval torture, to the examining magistrate in France and the Third Degree in America.

"I've been reading," said Flambeau, "of this new psychometric method they talk about so much, especially in America. You know what I mean; they put a pulsometer on a man's wrist and judge by how his heart goes at the pronunciation of certain words. What do you think of it?"

"I think it very interesting," replied Father Brown; "it reminds me of that interesting idea in the Dark Ages that blood would flow from a corpse if the murderer touched it."

"Do you really mean," demanded his friend, "that you think the two methods equally valuable?"

"I think them equally valueless," replied Brown. "Blood flows, fast or slow, in dead folk or living, for so many more million reasons than we can ever know. Blood will have to flow very funnily; blood will have to flow up the Matterhorn, before I will take it as a sign that I am to shed it."

"The method," remarked the other, "has been guaranteed by some of the greatest American men of science."

"What sentimentalists men of science are!" exclaimed Father Brown, "and how much more sentimental must American men of science be! Who but a Yankee would think of proving anything from heart-throbs? Why, they must be as sentimental as a man who thinks a woman is in love with him if she blushes. That's a test from the circulation of the blood, discovered by the immortal Harvey; and a jolly rotten test, too."

"But surely," insisted Flambeau, "it might point pretty straight at something or other."

"There's a disadvantage in a stick pointing straight," answered the other. "What is it? Why, the other end of the stick always points the opposite way. It depends whether you get hold of the stick by the right end. I saw the thing done once and I've never believed in it since." And he proceeded to tell the story of his disillusionment.

It happened nearly twenty years before, when he was chaplain to his co-religionists in a prison in Chicago—where the Irish population displayed a capacity both for crime and penitence which kept him tolerably busy. The official second-in-command under the Governor was an ex-detective named Greywood Usher, a cadaverous, careful-spoken Yankee philosopher, occasionally varying a very rigid visage with an odd apologetic grimace. He liked Father Brown in a slightly patronizing way; and Father Brown liked him, though he heartily disliked his theories. His theories were extremely complicated and were held with extreme simplicity.

One evening he had sent for the priest, who, according to his custom, took a seat in silence at a table piled and littered with papers, and waited. The official selected from the papers a scrap of newspaper cutting, which he handed across to the cleric, who read it gravely. It appeared to be an extract from one of the pinkest of American Society papers, and ran as follows:

"Society's brightest widower is once more on the Freak Dinner stunt. All our exclusive citizens will recall the Perambulator Parade Dinner, in which Last-Trick Todd, at his palatial home at Pilgrim's Pond, caused so many of our prominent debutantes to look even younger than their years. Equally elegant and more miscellaneous and large-hearted in social outlook was Last-Trick's show the year previous, the popular Cannibal Crush Lunch, at which the confections handed round were sarcastically moulded in the forms of human arms and legs, and during which more than one of our gayest mental gymnasts was heard offering to eat his partner. The witticism which will inspire this evening is as yet in Mr Todd's pretty reticent intellect, or locked in the jewelled bosoms of our city's gayest leaders; but there is talk of a pretty parody of the simple manners and customs at the other end of Society's scale. This would be all the more telling, as hospitable Todd is entertaining in Lord Falconroy, the famous traveller, a true-blooded aristocrat fresh from England's oak-groves. Lord Falconroy's travels began before his ancient feudal title was resurrected, he was in the Republic in his youth, and fashion murmurs a sly reason for his return. Miss Etta Todd is one of our deep-souled New Yorkers, and comes into an income of nearly twelve hundred million dollars."

"Well," asked Usher, "does that interest you?"

"Why, words rather fail me," answered Father Brown. "I cannot think at this moment of anything in this world that would interest me less. And, unless the just anger of the Republic is at last going to electrocute journalists for writing like that, I don't quite see why it should interest you either."

"Ah!" said Mr Usher dryly, and handing across another scrap of newspaper. "Well, does that interest you?"

The paragraph was headed "Savage Murder of a Warder. Convict Escapes," and ran: "Just before dawn this morning a shout for help was heard in the Convict Settlement at Sequah in this State. The authorities, hurrying in the direction of the cry, found the corpse of the warder who patrols the top of the north wall of the prison, the steepest and most difficult exit, for which one man has always been found sufficient. The unfortunate officer had, however, been hurled from the high wall, his brains beaten out as with a club, and his gun was missing. Further inquiries showed that one of the cells was empty; it had been occupied by a rather sullen ruffian giving his name as Oscar Rian. He was only temporarily detained for some comparatively trivial assault; but he gave everyone the impression of a man with a black past and a dangerous future. Finally, when daylight had fully revealed the scene of murder, it was found that he had written on the wall above the body a fragmentary sentence, apparently with a finger dipped in blood: 'This was self-defence and he had the gun. I meant no harm to him or any man but one. I am keeping the bullet for Pilgrim's Pond—O.R.' A man must have used most fiendish treachery or most savage and amazing bodily daring to have stormed such a wall in spite of an armed man."

"Well, the literary style is somewhat improved," admitted the priest cheerfully, "but still I don't see what I can do for you. I should cut a poor figure, with my short legs, running about this State after an athletic assassin of that sort. I doubt whether anybody could find him. The convict settlement at Sequah is thirty miles from here; the country between is wild and tangled enough, and the country beyond, where he will surely have the sense to go, is a perfect no-man's land tumbling away to the prairies. He may be in any hole or up any tree."

"He isn't in any hole," said the governor; "he isn't up any tree."

"Why, how do you know?" asked Father Brown, blinking.

"Would you like to speak to him?" inquired Usher.

Father Brown opened his innocent eyes wide. "He is here?" he exclaimed. "Why, how did your men get hold of him?"

"I got hold of him myself," drawled the American, rising and lazily stretching his lanky legs before the fire. "I got hold of him with the crooked end of a walking-stick. Don't look so surprised. I really did. You know I sometimes take a turn in the country lanes outside this dismal place; well, I was walking early this evening up a steep lane with dark hedges and grey-looking ploughed fields on both sides; and a young moon was up and silvering the road. By the light of it I saw a man running across the field towards the road; running with his body bent and at a good mile-race trot. He appeared to be much exhausted; but when he came to the thick black hedge he went through it as if it were made of spiders' webs;—or rather (for I heard the strong branches breaking and snapping like bayonets) as if he himself were made of stone. In the instant in which he appeared up against the moon, crossing the road, I slung my hooked cane at his legs, tripping him and bringing him down. Then I blew my whistle long and loud, and our fellows came running up to secure him."

"It would have been rather awkward," remarked Brown, "if you had found he was a popular athlete practising a mile race."

"He was not," said Usher grimly. "We soon found out who he was; but I had guessed it with the first glint of the moon on him."

"You thought it was the runaway convict," observed the priest simply, "because you had read in the newspaper cutting that morning that a convict had run away."

"I had somewhat better grounds," replied the governor coolly. "I pass over the first as too simple to be emphasized—I mean that fashionable athletes do not run across ploughed fields or scratch their eyes out in bramble hedges. Nor do they run all doubled up like a crouching dog. There were more decisive details to a fairly well-trained eye. The man was clad in coarse and ragged clothes, but they were something more than merely coarse and ragged. They were so ill-fitting as to be quite grotesque; even as he appeared in black outline against the moonrise, the coat-collar in which his head was buried made him look like a hunchback, and the long loose sleeves looked as if he had no hands. It at once occurred to me that he had somehow managed to change his convict clothes for some confederate's clothes which did not fit him. Second, there was a pretty stiff wind against which he was running; so that I must have seen the streaky look of blowing hair, if the hair had not been very short. Then I remembered that beyond these ploughed fields he was crossing lay Pilgrim's Pond, for which (you will remember) the convict was keeping his bullet; and I sent my walking-stick flying."

"A brilliant piece of rapid deduction," said Father Brown; "but had he got a gun?"

As Usher stopped abruptly in his walk the priest added apologetically: "I've been told a bullet is not half so useful without it."

"He had no gun," said the other gravely; "but that was doubtless due to some very natural mischance or change of plans. Probably the same policy that made him change the clothes made him drop the gun; he began to repent the coat he had left behind him in the blood of his victim."

"Well, that is possible enough," answered the priest.

"And it's hardly worth speculating on," said Usher, turning to some other papers, "for we know it's the man by this time."

His clerical friend asked faintly: "But how?" And Greywood Usher threw down the newspapers and took up the two press-cuttings again.

"Well, since you are so obstinate," he said, "let's begin at the beginning. You will notice that these two cuttings have only one thing in common, which is the mention of Pilgrim's Pond, the estate, as you know, of the millionaire Ireton Todd. You also know that he is a remarkable character; one of those that rose on stepping-stones—"

"Of our dead selves to higher things," assented his companion. "Yes; I know that. Petroleum, I think."

"Anyhow," said Usher, "Last-Trick Todd counts for a great deal in this rum affair."

He stretched himself once more before the fire and continued talking in his expansive, radiantly explanatory style.

"To begin with, on the face of it, there is no mystery here at all. It is not mysterious, it is not even odd, that a jailbird should take his gun to Pilgrim's Pond. Our people aren't like the English, who will forgive a man for being rich if he throws away money on hospitals or horses. Last-Trick Todd has made himself big by his own considerable abilities; and there's no doubt that many of those on whom he has shown his abilities would like to show theirs on him with a shot-gun. Todd might easily get dropped by some man he'd never even heard of; some labourer he'd locked out, or some clerk in a business he'd busted. Last-Trick is a man of mental endowments and a high public character; but in this country the relations of employers and employed are considerably strained.

"That's how the whole thing looks supposing this Rian made for Pilgrim's Pond to kill Todd. So it looked to me, till another little discovery woke up what I have of the detective in me. When I had my prisoner safe, I picked up my cane again and strolled down the two or three turns of country road that brought me to one of the side entrances of Todd's grounds, the one nearest to the pool or lake after which the place is named. It was some two hours ago, about seven by this time; the moonlight was more luminous, and I could see the long white streaks of it lying on the mysterious mere with its grey, greasy, half-liquid shores in which they say our fathers used to make witches walk until they sank. I'd forgotten the exact tale; but you know the place I mean; it lies north of Todd's house towards the wilderness, and has two queer wrinkled trees, so dismal that they look more like huge fungoids than decent foliage. As I stood peering at this misty pool, I fancied I saw the faint figure of a man moving from the house towards it, but it was all too dim and distant for one to be certain of the fact, and still less of the details. Besides, my attention was very sharply arrested by something much closer. I crouched behind the fence which ran not more than two hundred yards from one wing of the great mansion, and which was fortunately split in places, as if specially for the application of a cautious eye. A door had opened in the dark bulk of the left wing, and a figure appeared black against the illuminated interior—a muffled figure bending forward, evidently peering out into the night. It closed the door behind it, and I saw it was carrying a lantern, which threw a patch of imperfect light on the dress and figure of the wearer. It seemed to be the figure of a woman, wrapped up in a ragged cloak and evidently disguised to avoid notice; there was something very strange both about the rags and the furtiveness in a person coming out of those rooms lined with gold. She took cautiously the curved garden path which brought her within half a hundred yards of me—, then she stood up for an instant on the terrace of turf that looks towards the slimy lake, and holding her flaming lantern above her head she deliberately swung it three times to and fro as for a signal. As she swung it the second time a flicker of its light fell for a moment on her own face, a face that I knew. She was unnaturally pale, and her head was bundled in her borrowed plebeian shawl; but I am certain it was Etta Todd, the millionaire's daughter.

"She retraced her steps in equal secrecy and the door closed behind her again. I was about to climb the fence and follow, when I realized that the detective fever that had lured me into the adventure was rather undignified; and that in a more authoritative capacity I already held all the cards in my hand. I was just turning away when a new noise broke on the night. A window was thrown up in one of the upper floors, but just round the corner of the house so that I could not see it; and a voice of terrible distinctness was heard shouting across the dark garden to know where Lord Falconroy was, for he was missing from every room in the house. There was no mistaking that voice. I have heard it on many a political platform or meeting of directors; it was Ireton Todd himself. Some of the others seemed to have gone to the lower windows or on to the steps, and were calling up to him that Falconroy had gone for a stroll down to the Pilgrim's Pond an hour before, and could not be traced since. Then Todd cried 'Mighty Murder!' and shut down the window violently; and I could hear him plunging down the stairs inside. Repossessing myself of my former and wiser purpose, I whipped out of the way of the general search that must follow; and returned here not later than eight o'clock.

"I now ask you to recall that little Society paragraph which seemed to you so painfully lacking in interest. If the convict was not keeping the shot for Todd, as he evidently wasn't, it is most likely that he was keeping it for Lord Falconroy; and it looks as if he had delivered the goods. No more handy place to shoot a man than in the curious geological surroundings of that pool, where a body thrown down would sink through thick slime to a depth practically unknown. Let us suppose, then, that our friend with the cropped hair came to kill Falconroy and not Todd. But, as I have pointed out, there are many reasons why people in America might want to kill Todd. There is no reason why anybody in America should want to kill an English lord newly landed, except for the one reason mentioned in the pink paper—that the lord is paying his attentions to the millionaire's daughter. Our crop-haired friend, despite his ill-fitting clothes, must be an aspiring lover.

"I know the notion will seem to you jarring and even comic; but that's because you are English. It sounds to you like saying the Archbishop of Canterbury's daughter will be married in St George's, Hanover Square, to a crossing-sweeper on ticket-of-leave. You don't do justice to the climbing and aspiring power of our more remarkable citizens. You see a good-looking grey-haired man in evening-dress with a sort of authority about him, you know he is a pillar of the State, and you fancy he had a father. You are in error. You do not realize that a comparatively few years ago he may have been in a tenement or (quite likely) in a jail. You don't allow for our national buoyancy and uplift. Many of our most influential citizens have not only risen recently, but risen comparatively late in life. Todd's daughter was fully eighteen when her father first made his pile; so there isn't really anything impossible in her having a hanger-on in low life; or even in her hanging on to him, as I think she must be doing, to judge by the lantern business. If so, the hand that held the lantern may not be unconnected with the hand that held the gun. This case, sir, will make a noise."

"Well," said the priest patiently, "and what did you do next?"

"I reckon you'll be shocked," replied Greywood Usher, "as I know you don't cotton to the march of science in these matters. I am given a good deal of discretion here, and perhaps take a little more than I'm given; and I thought it was an excellent opportunity to test that Psychometric Machine I told you about. Now, in my opinion, that machine can't lie."

"No machine can lie," said Father Brown; "nor can it tell the truth."

"It did in this case, as I'll show you," went on Usher positively. "I sat the man in the ill-fitting clothes in a comfortable chair, and simply wrote words on a blackboard; and the machine simply recorded the variations of his pulse; and I simply observed his manner. The trick is to introduce some word connected with the supposed crime in a list of words connected with something quite different, yet a list in which it occurs quite naturally. Thus I wrote 'heron' and 'eagle' and 'owl', and when I wrote 'falcon' he was tremendously agitated; and when I began to make an 'r' at the end of the word, that machine just bounded. Who else in this republic has any reason to jump at the name of a newly-arrived Englishman like Falconroy except the man who's shot him? Isn't that better evidence than a lot of gabble from witnesses—if the evidence of a reliable machine?"

"You always forget," observed his companion, "that the reliable machine always has to be worked by an unreliable machine."

"Why, what do you mean?" asked the detective.

"I mean Man," said Father Brown, "the most unreliable machine I know of. I don't want to be rude; and I don't think you will consider Man to be an offensive or inaccurate description of yourself. You say you observed his manner; but how do you know you observed it right? You say the words have to come in a natural way; but how do you know that you did it naturally? How do you know, if you come to that, that he did not observe your manner? Who is to prove that you were not tremendously agitated? There was no machine tied on to your pulse."

"I tell you," cried the American in the utmost excitement, "I was as cool as a cucumber."

"Criminals also can be as cool as cucumbers," said Brown with a smile. "And almost as cool as you."

"Well, this one wasn't," said Usher, throwing the papers about. "Oh, you make me tired!"

"I'm sorry," said the other. "I only point out what seems a reasonable possibility. If you could tell by his manner when the word that might hang him had come, why shouldn't he tell from your manner that the word that might hang him was coming? I should ask for more than words myself before I hanged anybody."

Usher smote the table and rose in a sort of angry triumph.

"And that," he cried, "is just what I'm going to give you. I tried the machine first just in order to test the thing in other ways afterwards and the machine, sir, is right."

He paused a moment and resumed with less excitement. "I rather want to insist, if it comes to that, that so far I had very little to go on except the scientific experiment. There was really nothing against the man at all. His clothes were ill-fitting, as I've said, but they were rather better, if anything, than those of the submerged class to which he evidently belonged. Moreover, under all the stains of his plunging through ploughed fields or bursting through dusty hedges, the man was comparatively clean. This might mean, of course, that he had only just broken prison; but it reminded me more of the desperate decency of the comparatively respectable poor. His demeanour was, I am bound to confess, quite in accordance with theirs. He was silent and dignified as they are; he seemed to have a big, but buried, grievance, as they do. He professed total ignorance of the crime and the whole question; and showed nothing but a sullen impatience for something sensible that might come to take him out of his meaningless scrape. He asked me more than once if he could telephone for a lawyer who had helped him a long time ago in a trade dispute, and in every sense acted as you would expect an innocent man to act. There was nothing against him in the world except that little finger on the dial that pointed to the change of his pulse.

"Then, sir, the machine was on its trial; and the machine was right. By the time I came with him out of the private room into the vestibule where all sorts of other people were awaiting examination, I think he had already more or less made up his mind to clear things up by something like a confession. He turned to me and began to say in a low voice: 'Oh, I can't stick this any more. If you must know all about me—'

"At the same instant one of the poor women sitting on the long bench stood up, screaming aloud and pointing at him with her finger. I have never in my life heard anything more demoniacally distinct. Her lean finger seemed to pick him out as if it were a pea-shooter. Though the word was a mere howl, every syllable was as clear as a separate stroke on the clock.

"'Drugger Davis!' she shouted. 'They've got Drugger Davis!'

"Among the wretched women, mostly thieves and streetwalkers, twenty faces were turned, gaping with glee and hate. If I had never heard the words, I should have known by the very shock upon his features that the so-called Oscar Rian had heard his real name. But I'm not quite so ignorant, you may be surprised to hear. Drugger Davis was one of the most terrible and depraved criminals that ever baffled our police. It is certain he had done murder more than once long before his last exploit with the warder. But he was never entirely fixed for it, curiously enough because he did it in the same manner as those milder—or meaner—crimes for which he was fixed pretty often. He was a handsome, well-bred-looking brute, as he still is, to some extent; and he used mostly to go about with barmaids or shop-girls and do them out of their money. Very often, though, he went a good deal farther; and they were found drugged with cigarettes or chocolates and their whole property missing. Then came one case where the girl was found dead; but deliberation could not quite be proved, and, what was more practical still, the criminal could not be found. I heard a rumour of his having reappeared somewhere in the opposite character this time, lending money instead of borrowing it; but still to such poor widows as he might personally fascinate, but still with the same bad result for them. Well, there is your innocent man, and there is his innocent record. Even, since then, four criminals and three warders have identified him and confirmed the story. Now what have you got to say to my poor little machine after that? Hasn't the machine done for him? Or do you prefer to say that the woman and I have done for him?"

"As to what you've done for him," replied Father Brown, rising and shaking himself in a floppy way, "you've saved him from the electrical chair. I don't think they can kill Drugger Davis on that old vague story of the poison; and as for the convict who killed the warder, I suppose it's obvious that you haven't got him. Mr Davis is innocent of that crime, at any rate."

"What do you mean?" demanded the other. "Why should he be innocent of that crime?"

"Why, bless us all!" cried the small man in one of his rare moments of animation, "why, because he's guilty of the other crimes! I don't know what you people are made of. You seem to think that all sins are kept together in a bag. You talk as if a miser on Monday were always a spendthrift on Tuesday. You tell me this man you have here spent weeks and months wheedling needy women out of small sums of money; that he used a drug at the best, and a poison at the worst; that he turned up afterwards as the lowest kind of moneylender, and cheated most poor people in the same patient and pacific style. Let it be granted—let us admit, for the sake of argument, that he did all this. If that is so, I will tell you what he didn't do. He didn't storm a spiked wall against a man with a loaded gun. He didn't write on the wall with his own hand, to say he had done it. He didn't stop to state that his justification was self-defence. He didn't explain that he had no quarrel with the poor warder. He didn't name the house of the rich man to which he was going with the gun. He didn't write his own, initials in a man's blood. Saints alive! Can't you see the whole character is different, in good and evil? Why, you don't seem to be like I am a bit. One would think you'd never had any vices of your own."

The amazed American had already parted his lips in protest when the door of his private and official room was hammered and rattled in an unceremonious way to which he was totally unaccustomed.

The door flew open. The moment before Greywood Usher had been coming to the conclusion that Father Brown might possibly be mad. The moment after he began to think he was mad himself. There burst and fell into his private room a man in the filthiest rags, with a greasy squash hat still askew on his head, and a shabby green shade shoved up from one of his eyes, both of which were glaring like a tiger's. The rest of his face was almost undiscoverable, being masked with a matted beard and whiskers through which the nose could barely thrust itself, and further buried in a squalid red scarf or handkerchief. Mr Usher prided himself on having seen most of the roughest specimens in the State, but he thought he had never seen such a baboon dressed as a scarecrow as this. But, above all, he had never in all his placid scientific existence heard a man like that speak to him first.

"See here, old man Usher," shouted the being in the red handkerchief, "I'm getting tired. Don't you try any of your hide-and-seek on me; I don't get fooled any. Leave go of my guests, and I'll let up on the fancy clockwork. Keep him here for a split instant and you'll feel pretty mean. I reckon I'm not a man with no pull."

The eminent Usher was regarding the bellowing monster with an amazement which had dried up all other sentiments. The mere shock to his eyes had rendered his ears, almost useless. At last he rang a bell with a hand of violence. While the bell was still strong and pealing, the voice of Father Brown fell soft but distinct.

"I have a suggestion to make," he said, "but it seems a little confusing. I don't know this gentleman—but—but I think I know him. Now, you know him—you know him quite well—but you don't know him—naturally. Sounds paradoxical, I know."

"I reckon the Cosmos is cracked," said Usher, and fell asprawl in his round office chair.

"Now, see here," vociferated the stranger, striking the table, but speaking in a voice that was all the more mysterious because it was comparatively mild and rational though still resounding. "I won't let you in. I want—"

"Who in hell are you?" yelled Usher, suddenly sitting up straight.

"I think the gentleman's name is Todd," said the priest.

Then he picked up the pink slip of newspaper.

"I fear you don't read the Society papers properly," he said, and began to read out in a monotonous voice, "'Or locked in the jewelled bosoms of our city's gayest leaders; but there is talk of a pretty parody of the manners and customs of the other end of Society's scale.' There's been a big Slum Dinner up at Pilgrim's Pond tonight; and a man, one of the guests, disappeared. Mr Ireton Todd is a good host, and has tracked him here, without even waiting to take off his fancy-dress."

"What man do you mean?"

"I mean the man with comically ill-fitting clothes you saw running across the ploughed field. Hadn't you better go and investigate him? He will be rather impatient to get back to his champagne, from which he ran away in such a hurry, when the convict with the gun hove in sight."

"Do you seriously mean—" began the official.

"Why, look here, Mr Usher," said Father Brown quietly, "you said the machine couldn't make a mistake; and in one sense it didn't. But the other machine did; the machine that worked it. You assumed that the man in rags jumped at the name of Lord Falconroy, because he was Lord Falconroy's murderer. He jumped at the name of Lord Falconroy because he is Lord Falconroy."

"Then why the blazes didn't he say so?" demanded the staring Usher.

"He felt his plight and recent panic were hardly patrician," replied the priest, "so he tried to keep the name back at first. But he was just going to tell it you, when"—and Father Brown looked down at his boots—"when a woman found another name for him."

"But you can't be so mad as to say," said Greywood Usher, very white, "that Lord Falconroy was Drugger Davis."

The priest looked at him very earnestly, but with a baffling and undecipherable face.

"I am not saying anything about it," he said. "I leave all the rest to you. Your pink paper says that the title was recently revived for him; but those papers are very unreliable. It says he was in the States in youth; but the whole story seems very strange. Davis and Falconroy are both pretty considerable cowards, but so are lots of other men. I would not hang a dog on my own opinion about this. But I think," he went on softly and reflectively, "I think you Americans are too modest. I think you idealize the English aristocracy—even in assuming it to be so aristocratic. You see a good-looking Englishman in evening-dress; you know he's in the House of Lords; and you fancy he has a father. You don't allow for our national buoyancy and uplift. Many of our most influential noblemen have not only risen recently, but—"

"Oh, stop it!" cried Greywood Usher, wringing one lean hand in impatience against a shade of irony in the other's face.

"Don't stay talking to this lunatic!" cried Todd brutally. "Take me to my friend."

Next morning Father Brown appeared with the same demure expression, carrying yet another piece of pink newspaper.

"I'm afraid you neglect the fashionable press rather," he said, "but this cutting may interest you."

Usher read the headlines, "Last-Trick's Strayed Revellers: Mirthful Incident near Pilgrim's Pond." The paragraph went on: "A laughable occurrence took place outside Wilkinson's Motor Garage last night. A policeman on duty had his attention drawn by larrikins to a man in prison dress who was stepping with considerable coolness into the steering-seat of a pretty high-toned Panhard; he was accompanied by a girl wrapped in a ragged shawl. On the police interfering, the young woman threw back the shawl, and all recognized Millionaire Todd's daughter, who had just come from the Slum Freak Dinner at the Pond, where all the choicest guests were in a similar deshabille. She and the gentleman who had donned prison uniform were going for the customary joy-ride."

Under the pink slip Mr Usher found a strip of a later paper, headed, "Astounding Escape of Millionaire's Daughter with Convict. She had Arranged Freak Dinner. Now Safe in—"

Mr Greenwood Usher lifted his eyes, but Father Brown was gone.



SIX — The Head of Caesar

THERE is somewhere in Brompton or Kensington an interminable avenue of tall houses, rich but largely empty, that looks like a terrace of tombs. The very steps up to the dark front doors seem as steep as the side of pyramids; one would hesitate to knock at the door, lest it should be opened by a mummy. But a yet more depressing feature in the grey facade is its telescopic length and changeless continuity. The pilgrim walking down it begins to think he will never come to a break or a corner; but there is one exception—a very small one, but hailed by the pilgrim almost with a shout. There is a sort of mews between two of the tall mansions, a mere slit like the crack of a door by comparison with the street, but just large enough to permit a pigmy ale-house or eating-house, still allowed by the rich to their stable-servants, to stand in the angle. There is something cheery in its very dinginess, and something free and elfin in its very insignificance. At the feet of those grey stone giants it looks like a lighted house of dwarfs.

Anyone passing the place during a certain autumn evening, itself almost fairylike, might have seen a hand pull aside the red half-blind which (along with some large white lettering) half hid the interior from the street, and a face peer out not unlike a rather innocent goblin's. It was, in fact, the face of one with the harmless human name of Brown, formerly priest of Cobhole in Essex, and now working in London. His friend, Flambeau, a semi-official investigator, was sitting opposite him, making his last notes of a case he had cleared up in the neighbourhood. They were sitting at a small table, close up to the window, when the priest pulled the curtain back and looked out. He waited till a stranger in the street had passed the window, to let the curtain fall into its place again. Then his round eyes rolled to the large white lettering on the window above his head, and then strayed to the next table, at which sat only a navvy with beer and cheese, and a young girl with red hair and a glass of milk. Then (seeing his friend put away the pocket-book), he said softly:

"If you've got ten minutes, I wish you'd follow that man with the false nose."

Flambeau looked up in surprise; but the girl with the red hair also looked up, and with something that was stronger than astonishment. She was simply and even loosely dressed in light brown sacking stuff; but she was a lady, and even, on a second glance, a rather needlessly haughty one. "The man with the false nose!" repeated Flambeau. "Who's he?"

"I haven't a notion," answered Father Brown. "I want you to find out; I ask it as a favour. He went down there"—and he jerked his thumb over his shoulder in one of his undistinguished gestures—"and can't have passed three lamp-posts yet. I only want to know the direction."

Flambeau gazed at his friend for some time, with an expression between perplexity and amusement; and then, rising from the table; squeezed his huge form out of the little door of the dwarf tavern, and melted into the twilight.

Father Brown took a small book out of his pocket and began to read steadily; he betrayed no consciousness of the fact that the red-haired lady had left her own table and sat down opposite him. At last she leaned over and said in a low, strong voice: "Why do you say that? How do you know it's false?"

He lifted his rather heavy eyelids, which fluttered in considerable embarrassment. Then his dubious eye roamed again to the white lettering on the glass front of the public-house. The young woman's eyes followed his, and rested there also, but in pure puzzledom.

"No," said Father Brown, answering her thoughts. "It doesn't say 'Sela', like the thing in the Psalms; I read it like that myself when I was wool-gathering just now; it says 'Ales.'"

"Well?" inquired the staring young lady. "What does it matter what it says?"

His ruminating eye roved to the girl's light canvas sleeve, round the wrist of which ran a very slight thread of artistic pattern, just enough to distinguish it from a working-dress of a common woman and make it more like the working-dress of a lady art-student. He seemed to find much food for thought in this; but his reply was very slow and hesitant. "You see, madam," he said, "from outside the place looks—well, it is a perfectly decent place—but ladies like you don't—don't generally think so. They never go into such places from choice, except—"