fell at last under the blight of black magic; the black magic of this scoundrel Strake. But my brothers were wrong about the antidote. The antidote to black magic is not brute materialism or worldly wisdom. The antidote to black magic is white magic.'
'It rather depends,' said Father Brown, 'what you mean by white magic.'
'I mean silver magic,' said the other, in a low voice, like one speaking of a secret revelation. Then after a silence he said: 'Do you know what I mean by silver magic? Excuse me a moment.'
He turned and opened the central door with the red glass and went into a passage beyond it. The house had less depth than Brown had supposed; instead of the door opening into interior rooms, the corridor it revealed ended in another door on the garden. The door of one room was on one side of the passage; doubtless, the priest told himself, the proprietor's bedroom whence he had rushed out in his dressing–gown. There was nothing else on that side but an ordinary hat–stand with the ordinary dingy cluster of old hats and overcoats; but on the other side was something more interesting: a very dark old oak sideboard laid out with some old silver, and overhung by a trophy or ornament of old weapons. It was by that that Arnold Aylmer halted, looking up at a long antiquated pistol with a bell–shaped mouth.
The door at the end of the passage was barely open, and through the crack came a streak of white daylight. The priest had very quick instincts about natural things, and something in the unusual brilliancy of that white line told him what had happened outside. It was indeed what he had prophesied when he was approaching the house. He ran past his rather startled host and opened the door, to face something that was at once a blank and a blaze. What he had seen shining through the crack was not only the most negative whiteness of daylight but the positive whiteness of snow. All round, the sweeping fall of the country was covered with that shining pallor that seems at once hoary and innocent.
'Here is white magic anyhow,' said Father Brown in his cheerful voice. Then, as he turned back into the hall, he murmured, 'And silver magic too, I suppose,' for the white lustre touched the silver with splendour and lit up the old steel here and there in the darkling armoury. The shaggy head of the brooding Aylmer seemed to have a halo of silver fire, as he turned with his face in shadow and the outlandish pistol in his hand.
'Do you know why I chose this sort of old blunderbuss?' he asked. 'Because I can load it with this sort of bullet.'
He had picked up a small apostle spoon from the sideboard and by sheer violence broke off the small figure at the top. 'Let us go back into the other room,' he added.
'Did you ever read about the death of Dundee ?' he asked when they had reseated themselves. He had recovered from his momentary annoyance at the priest's restlessness. 'Graham of Claverhouse, you know, who persecuted the Covenanters and had a black horse that could ride straight up a precipice. Don't you know he could only be shot with a silver bullet, because he had sold himself to the Devil? That's one comfort about you; at least you know enough to believe in the Devil.'
'Oh, yes,' replied Father Brown, 'I believe in the Devil. What I don't believe in is the Dundee. I mean the Dundee of Covenanting legends, with his nightmare of a horse. John Graham was simply a seventeenth–century professional soldier, rather better than most. If he dragooned them it was because he was a dragoon, but not a dragon. Now my experience is that it's not that sort of swaggering blade who sells himself to the Devil. The devil– worshippers I've known were quite different. Not to mention names, which might cause a social flutter, I'll take a man in Dundee 's own day. Have you ever heard of Dalrymple of Stair?'
'No,' replied the other gruffly.
'You've heard of what he did,' said Father Brown, 'and it was worse than anything Dundee ever did; yet he escapes the infamy by oblivion. He was the man who made the Massacre of Glencoe. He was a very learned man and lucid lawyer, a statesman with very serious and enlarged ideas of statesmanship, a quiet man with a very refined and intellectual face. That's the sort of man who sells himself to the Devil.'
Aylmer half started from his chair with an enthusiasm of eager assent.
'By God! you are right,' he cried. 'A refined intellectual face! That is the face of John Strake.'
Then he raised himself and stood looking at the priest with a curious concentration. 'If you will wait here a little while,' he said, 'I will show you something.'
He went back through the central door, closing it after him; going, the priest presumed, to the old sideboard or possibly to his bedroom. Father Brown remained seated, gazing abstractedly at the carpet, where a faint red glimmer shone from the glass in the doorway. Once it seemed to brighten like a ruby and then darkened again, as if the sun of that stormy day had passed from cloud to cloud. Nothing moved except the aquatic creatures which floated to and fro in the dim green bowl. Father Brown was thinking hard.
A minute or two afterwards he got up and slipped quietly to the alcove of the telephone, where he rang up his friend Dr Boyne, at the official headquarters. 'I wanted to tell you about Aylmer and his affairs,' he said quietly. 'It's a queer story, but I rather think there's something in it. If I were you I'd send some men up here straight away; four or five men, I think, and surround the house. If anything does happen there'll probably be something startling in the way of an escape.'
Then he went back and sat down again, staring at the dark carpet, which again glowed blood–red with the light from the glass door. Something in the filtered light set his mind drifting on certain borderlands of thought, with the first white daybreak before the coming of colour, and all that mystery which is alternately veiled and revealed in the symbol of windows and of doors.
An inhuman howl in a human voice came from beyond the closed doors, almost simultaneously with the noise of firing. Before the echoes of the shot had died away the door was violently flung open and his host staggered into the room, the dressing–gown half torn from his shoulder and the long pistol smoking in his hand. He seemed to be shaking in every limb, yet he was shaken in part with an unnatural laughter.
'Glory be to the White Magic!' he cried. 'Glory be to the silver bullet! The hell–hound had hunted once too often, and my brothers are avenged at last.'
He sank into a chair and the pistol slid from his hand and fell on the floor. Father Brown darted past him, slipped through the glass door and went down the passage. As he did so he put his hand on the handle of the bedroom door, as if half intending to enter; then he stooped a moment, as if examining something–and then he ran to the outer door and opened it.
On the field of snow, which had been so blank a little while before, lay one black object. At the first glance it looked a little like an enormous bat. A second glance showed that it was, after all, a human figure; fallen on its face, the whole head covered by a broad black hat having something of a Latin–American look; while the appearance of black–wings came from the two flaps or loose sleeves of a very vast black cloak spread out, perhaps by accident, to their utmost length on either side. Both the hands were hidden, though Father Brown thought he could detect the position of one of them, and saw close to it, under the edge of the cloak, the glimmer of some metallic weapon. The main effect, however, was curiously like that of the simple extravagances of heraldry; like a black eagle displayed on a white ground. But by walking round it and peering under the hat the priest got a glimpse of the face, which was indeed what his host had called refined and intellectual; even sceptical and austere: the face of John Strake.
'Well, I'm jiggered,' muttered Father Brown. 'It really does look like some vast vampire that has swooped down like a bird.'
'How else could he have come?' came a voice from the doorway, and Father Brown looked up to see Aylmer once more standing there.
'Couldn't he have walked?' replied Father Brown evasively.
Aylmer stretched out his arm and swept the white landscape with a gesture.
'Look at the snow,' he said in a deep voice that had a sort of roll and thrill in it. 'Is not the snow unspotted– pure as the white magic you yourself called it? Is there a speck on it for miles, save that one foul black blot that has fallen there? There are no footprints, but a few of yours and mine; there are none approaching the house from anywhere.'
Then he looked at the little priest for a moment with a concentrated and curious expression, and said: 'I will tell you something else. That cloak he flies with is too long to walk with. He was not a very tall man, and it would trail behind him like a royal train. Stretch it out over his body, if you like, and see.'
'What happened to you both?' asked Father Brown abruptly.
'It was too swift to describe,' answered Aylmer. 'I had looked out of the door and was turning back when there came a kind of rushing of wind all around me, as if I were being buffeted by a wheel revolving in mid–air. I
