'I suppose,' said Crake, breaking the silence that followed, 'that means that some of us are accused, or suspected.'
'All of us are suspected,' answered Father Brown. 'I may be suspected myself, for I found the body.'
'Of course we're suspected,' snapped Wain. 'Father Brown kindly explained to me how I could have besieged the tower in a flying–machine.'
'No,' replied the priest, with a smile; 'you described to me how you could have done it. That was just the interesting part of it.'
'He seemed to think it likely,' growled Crake, 'that I killed him myself with a Red Indian arrow.'
'I thought it most unlikely,' said Father Brown, making rather a wry face. I'm sorry if I did wrong, but I couldn't think of any other way of testing the matter. I can hardly think of anything more improbable than the notion that Captain Wain went careering in a huge machine past the window, at the very moment of the murder, and nobody noticed it; unless, perhaps, it were the notion that a respectable old gentleman should play at Red Indians with a bow and arrow behind the bushes, to kill somebody he could have killed in twenty much simpler ways. But I had to find out if they had had anything to do with it; and so I had to accuse them in order to prove their innocence.'
'And how have you proved their innocence?' asked Blake the lawyer, leaning forward eagerly.
'Only by the agitation they showed when they were accused,' answered the other.
'What do you mean, exactly?'
'If you will permit me to say so,' remarked Father Brown, composedly enough, 'I did undoubtedly think it my duty to suspect them and everybody else. I did suspect Mr Crake and I did suspect Captain Wain, in the sense that I considered the possibility or probability of their guilt. I told them I had formed conclusions about it; and I will now tell them what those conclusions were. I was sure they were innocent, because of the manner and the moment in which they passed from unconsciousness to indignation. So long as they never thought they were accused, they went on giving me materials to support the accusation. They practically explained to me how they might have committed the crime. Then they suddenly realized with a shock and a shout of rage that they were accused; they realized it long after they might well have expected to be accused, but long before I had accused them. Now no guilty person could possibly do that. He might be snappy and suspicious from the first; or he might simulate unconsciousness and innocence up to the end. But he wouldn't begin by making things worse for himself and then give a great jump and begin furiously denying the notion he had himself helped to suggest. That could only come by his having really failed to realize what he was suggesting. The self–consciousness of a murderer would always be at least morbidly vivid enough to prevent him first forgetting his relation with the thing and then remembering to deny it. So I ruled you both out and others for other reasons I needn't discuss now. For instance, there was the secretary–
'But I'm not talking about that just now. Look here, I've just heard from Wilton on the phone, and he's given me permission to tell you some rather serious news. Now I suppose you all know by this time who Wilton was, and what he was after.'
'I know he was after Daniel Doom and wouldn't be happy till he got him,' answered Peter Wain; 'and I've heard the story that he's the son of old Horder, and that's why he's the avenger of blood. Anyhow, he's certainly looking for the man called Doom.'
'Well,' said Father Brown, 'he has found him.'
Peter Wain sprang to his feet in excitement.
'The murderer!' he cried. 'Is the murderer in the lock–up already?'
'No,' said Father Brown, gravely; 'I said the news was serious, and it's more serious than that. I'm afraid poor Wilton has taken a terrible responsibility. I'm afraid he's going to put a terrible responsibility on us. He hunted the criminal down, and just when he had him cornered at last–well, he has taken the law into his own hands.'
'You mean that Daniel Doom–' began the lawyer.
'I mean that Daniel Doom is dead,' said the priest. 'There was some sort of wild struggle, and Wilton killed him.'
'Serve him right,' growled Mr Hickory Crake.
'Can't blame Wilton for downing a crook like that, especially considering the feud,' assented Wain; 'it was like stepping on a viper.'
'I don't agree with you,' said Father Brown. 'I suppose we all talk romantic stuff at random in defence of lynching and lawlessness; but I have a suspicion that if we lose our laws and liberties we shall regret it. Besides, it seems to me illogical to say there is something to be said for Wilton committing murder, without even inquiring whether there was anything to be said for Doom committing it. I rather doubt whether Doom was merely a vulgar assassin; he may have been a sort of outlaw with a mania about the cup, demanding it with threats and only killing after a struggle; both victims were thrown down just outside their houses. The objection to Wilton 's way of doing it is that we shall never hear Doom's side of the case.'
'Oh, I've no patience with all this sentimental whitewashing of worthless, murderous blackguards,' cried Wain, heatedly. 'If Wilton croaked the criminal he did a jolly good day's work, and there's an end of it.'
'Quite so, quite so,' said his uncle, nodding vigorously.
Father Brown's face had a yet heavier gravity as he looked slowly round the semicircle effaces. 'Is that really what you all think?' he asked. Even as he did so he realized that he was an Englishman and an exile. He realized that he was among foreigners, even if he was among friends. Around that ring of foreigners ran a restless fire that was not native to his own breed; the fiercer spirit of the western nation that can rebel and lynch, and above all, combine. He knew that they had already combined.
'Well,' said Father Brown, with a sigh, 'I am to understand, then, that you do definitely condone this unfortunate man's crime, or act of private justice, or whatever you call it. In that case it will not hurt him if I tell you a little more about it.'
He rose suddenly to his feet; and though they saw no meaning in his movement, it seemed in some way to change or chill the very air in the room.
'Wilton killed Doom in a rather curious way,' he began.
'How did Wilton kill him?' asked Crake, abruptly.
'With an arrow,' said Father Brown.
Twilight was gathering in the long room, and daylight dwindling to a gleam from the great window in the inner room, where the great millionaire had died. Almost automatically the eyes of the group turned slowly towards it, but as yet there was no sound. Then the voice of Crake came cracked and high and senile in a sort of crowing gabble.
'What you mean? What you mean? Brander Merton killed by an arrow. This crook killed by an arrow–'
'By the same arrow,' said the priest, 'and at the same moment.'
Again there was a sort of strangled and yet swollen and bursting silence, and young Wain began: 'You mean–'
'I mean that your friend Merton was Daniel Doom,' said Father Brown firmly;' and the only Daniel Doom you'll ever find. Your friend Merton was always crazy after that Coptic Cup that he used to worship like an idol every day; and in his wild youth he had really killed two men to get it, though I still think the deaths may have been in a sense accidents of the robbery. Anyhow, he had it; and that man Drage knew the story and was blackmailing him. But Wilton was after him for a very different purpose; I fancy he only discovered the truth when he'd got into this house. But anyhow, it was in this house, and in that room, that this hunt ended, and he slew the slayer of his father.'
For a long time nobody answered. Then old Crake could be heard drumming with his fingers on the table and muttering: