appearance of an aerodrome. The barrier did not look like wood or stone, and closer inspection proved it to be of metal.
They all alighted from the car, and one small door in the wall was slid open with considerable caution, after manipulations resembling the opening of a safe. But, much to Father Brown's surprise, the man called Norman Drage showed no disposition to enter, but took leave of them with sinister gaiety.
'I won't come in,' he said. 'It 'ud be too much pleasurable excitement for old man Merton, I reckon. He loves the sight of me so much that he'd die of joy.'
And he strode away, while Father Brown, with increasing wonder, was admitted through the steel door which instantly clicked behind him. Inside was a large and elaborate garden of gay and varied colours, but entirely without any trees or tall shrubs or flowers. In the centre of it rose a house of handsome and even striking architecture, but so high and narrow as rather to resemble a tower. The burning sunlight gleamed on glass roofing here and there at the top, but there seemed to be no windows at all in the lower part of it. Over everything was that spotless and sparkling cleanliness that seemed so native to the clear American air. When they came inside the portal, they stood amid resplendent marble and metals and enamels of brilliant colours, but there was no staircase. Nothing but a single shaft for a lift went up the centre between the solid walls, and the approach to it was guarded by heavy, powerful men like plain–clothes policemen.
'Pretty elaborate protection, I know,' said Wain. 'Maybe it makes you smile a little, Father Brown, to find Merton has to live in a fortress like this without even a tree in the garden for anyone to hide behind. But you don't know what sort of proposition we're up against in this country. And perhaps you don't know just what the name of Brander Merton means. He's a quiet–looking man enough, and anybody might pass him in the street; not that they get much chance nowadays, for he can only go out now and then in a closed car. But if anything happened to Brander Merton there'd be earthquakes from Alaska to the Cannibal Islands. I fancy there was never a king or emperor who had such power over the nations as he has. After all, I suppose if you'd been asked to visit the tsar, or the king of England , you'd have had the curiosity to go. You mayn't care much for tsars or millionaires; but it just means that power like that is always interesting. And I hope it's not against your principles to visit a modern sort of emperor like Merton.'
'Not at all,' said Father Brown, quietly. 'It is my duty to visit prisoners and all miserable men in captivity.'
There was a silence, and the young man frowned with a strange and almost shifty look on his lean face. Then he said, abruptly:
'Well, you've got to remember it isn't only common crooks or the Black Hand that's against him. This Daniel Doom is pretty much like the devil. Look how he dropped Trant in his own gardens and Horder outside his house, and got away with it.'
The top floor of the mansion, inside the enormously thick walls, consisted of two rooms; an outer room which they entered, and an inner room that was the great millionaire's sanctum. They entered the outer room just as two other visitors were coming out of the inner one. One was hailed by Peter Wain as his uncle – a small but very stalwart and active man with a shaven head that looked bald, and a brown face that looked almost too brown to have ever been white. This was old Crake, commonly called Hickory Crake in reminiscence of the more famous Old Hickory, because of his fame in the last Red Indian wars. His companion was a singular contrast – a very dapper gentleman with dark hair like a black varnish and a broad, black ribbon to his monocle: Barnard Blake, who was old Merton's lawyer and had been discussing with the partners the business of the firm. The four men met in the middle of the outer room and paused for a little polite conversation, in the act of respectively going and coming. And through all goings and comings another figure sat at the back of the room near the inner door, massive and motionless in the half–light from the inner window; a man with a Negro face and enormous shoulders. This was what the humorous self–criticism of America playfully calls the Bad Man; whom his friends might call a bodyguard and his enemies a bravo.
This man never moved or stirred to greet anybody; but the sight of him in the outer room seemed to move Peter Wain to his first nervous query.
'Is anybody with the chief?' he asked.
'Don't get rattled, Peter,' chuckled his uncle. ' Wilton the secretary is with him, and I hope that's enough for anybody. I don't believe Wilton ever sleeps for watching Merton. He is better than twenty bodyguards. And he's quick and quiet as an Indian.'
'Well, you ought to know,' said his nephew, laughing. 'I remember the Red Indian tricks you used to teach me when I was a boy and liked to read Red Indian stories. But in my Red Indian stories Red Indians seemed always to have the worst of it.'
'They didn't in real life,' said the old frontiersman grimly.
'Indeed?' inquired the bland Mr Blake. 'I should have thought they could do very little against our firearms.'
'I've seen an Indian stand under a hundred guns with nothing but a little scalping–knife and kill a white man standing on the top of a fort,' said Crake.
'Why, what did he do with it?' asked the other.
'Threw it,' replied Crake, 'threw it in a flash before a shot could be fired. I don't know where he learnt the trick.'
'Well, I hope you didn't learn it,' said his nephew, laughing.
'It seems to me,' said Father Brown, thoughtfully, 'that the story might have a moral.'
While they were speaking Mr Wilton, the secretary, had come out of the inner room and stood waiting; a pale, fair–haired man with a square chin and steady eyes with a look like a dog's; it was not difficult to believe that he had the single–eye of a watchdog.
He only said, 'Mr Merton can see you in about ten minutes,' but it served for a signal to break up the gossiping group. Old Crake said he must be off, and his nephew went out with him and his legal companion, leaving Father Brown for the moment alone with his secretary; for the negroid giant at the other end of the room could hardly be felt as if he were human or alive; he sat so motionless with his broad back to them, staring towards the inner room.
'Arrangements rather elaborate here, I'm afraid,' said the secretary. 'You've probably heard all about this Daniel Doom, and why it isn't safe to leave the boss very much alone.'
'But he is alone just now, isn't he?' said Father Brown.
The secretary looked at him with grave, grey eyes. 'For fifteen minutes,' he said. 'For fifteen minutes out of the twenty–four hours. That is all the real solitude he has; and that he insists on, for a pretty remarkable reason.'
'And what is the reason?' inquired the visitor. Wilton , the secretary, continued his steady gaze, but his mouth, that had been merely grave, became grim.
'The Coptic Cup,' he said. 'Perhaps you've forgotten the Coptic Cup; but he hasn't forgotten that or anything else. He doesn't trust any of us about the Coptic Cup. It's locked up somewhere and somehow in that room so that only he can find it; and he won't take it out till we're all out of the way. So we have to risk that quarter of an hour while he sits and worships it; I reckon it's the only worshipping he does. Not that there's any risk really; for I've turned all this place into a trap I don't believe the devil himself could get into–or at any rate, get out of. If this infernal Daniel Doom pays us a visit, he'll stay to dinner and a good bit later, by God! I sit here on hot bricks for the fifteen minutes, and the instant I heard a shot or a sound of struggle I'd press this button and an electrocuting current would run in a ring round that garden wall, so that it 'ud be death to cross or climb it. Of course, there couldn't be a shot, for this is the only way in; and the only window he sits at is away up on the top of a tower as smooth as a greasy pole. But, anyhow, we're all armed here, of course; and if Doom did get into that room he'd be dead before he got out.'
Father Brown was blinking at the carpet in a brown study. Then he said suddenly, with something like a jerk: 'I hope you won't mind my mentioning it, but a kind of a notion came into my head just this minute. It's about you.'
'Indeed,' remarked Wilton , 'and what about me?'
'I think you are a man of one idea,' said Father Brown, 'and you will forgive me for saying that it seems to be even more the idea of catching Daniel Doom than of defending Brander Merton.'
Wilton started a little and continued to stare at his companion; then very slowly his grim mouth took on a
