‘Wolves with the hair of the ermine,
Crows that are crowned and kings—
These things be many as vermin,
Yet Three shall abide these things.’
Or something of that kind. Indeed, it is by no means certain that the occupation would ever have been successful had not one of the three brothers, Paul, despicably, but very decisively declined to abide these things any longer, and, by surrendering all the secrets of the insurrection, ensured its overthrow and his own ultimate promotion to the post of chamberlain to Prince Otto. After this, Ludwig, the one genuine hero among Mr. Swinburne’s heroes, was killed, sword in hand, in the capture of the city; and the third, Heinrich, who, though not a traitor, had always been tame and even timid compared with his active brothers, retired into something like a hermitage, became converted to a Christian quietism which was almost Quakerish, and never mixed with men except to give nearly all he had to the poor. They tell me that not long ago he could still be seen about the neighbourhood occasionally, a man in a black cloak, nearly blind, with very wild, white hair, but a face of astonishing softness.”
“I know,” said Father Brown. “I saw him once.”
His friend looked at him in some surprise. “I didn’t know you’d been here before,” he said. “Perhaps you know as much about it as I do. Anyhow, that’s the story of the Arnholds, and he was the last survivor of them. Yes, and of all the men who played parts in that drama.”
“You mean that the Prince, too, died long before?”
“Died,” repeated Flambeau, “and that’s about as much as we can say. You must understand that towards the end of his life he began to have those tricks of the nerves not uncommon with tyrants. He multiplied the ordinary daily and nightly guard round his castle till there seemed to be more sentry-boxes than houses in the town, and doubtful characters were shot without mercy. He lived almost entirely in a little room that was in the very centre of the enormous labyrinth of all the other rooms, and even in this he erected another sort of central cabin or cupboard, lined with steel, like a safe or a battleship. Some say that under the floor of this again was a secret hole in the earth, no more than large enough to hold him, so that, in his anxiety to avoid the grave, he was willing to go into a place pretty much like it. But he went further yet. The populace had been supposed to be disarmed ever since the suppression of the revolt, but Otto now insisted, as governments very seldom insist, on an absolute and literal disarmament. It was carried out, with extraordinary thoroughness and severity, by very well-organized officials over a small and familiar area, and, so far as human strength and science can be absolutely certain of anything, Prince Otto was absolutely certain that nobody could introduce so much as a toy pistol into Heiligwaldenstein.”
“Human science can never be quite certain of things like that,” said Father Brown, still looking at the red budding of the branches over his head, “if only because of the difficulty about definition and connotation. What is a weapon? People have been murdered with the mildest domestic comforts; certainly with teakettles, probably with tea-cosies. On the other hand, if you showed an Ancient Briton a revolver, I doubt if he would know it was a weapon—until it was fired into him, of course. Perhaps somebody introduced a firearm so new that it didn’t even look like a firearm. Perhaps it looked like a thimble or something. Was the bullet at all peculiar?”
“Not that I ever heard of,” answered Flambeau; “but my information is fragmentary, and only comes from my old friend Grimm. He was a very able detective in the German service, and he tried to arrest me; I arrested him instead, and we had many interesting chats. He was in charge here of the inquiry about Prince Otto, but I forgot to ask him anything about the bullet. According to Grimm, what happened was this.” He paused a moment to drain the greater part of his dark lager at a draught, and then resumed:
“On the evening in question, it seems, the Prince was expected to appear in one of the outer rooms, because he had to receive certain visitors whom he really wished to meet. They were geological experts sent to investigate the old question of the alleged supply of gold from the rocks round here, upon which (as it was said) the small city-state had so long maintained its credit and been able to negotiate with its neighbours even under the ceaseless bombardment of bigger armies. Hitherto it had never been found by the most exacting inquiry which could—”
“Which could be quite certain of discovering a toy pistol,” said Father Brown with a smile. “But what about the brother who ratted? Hadn’t he anything to tell the Prince?”
“He always asseverated that he did not know,” replied Flambeau, “that this was the one secret his brothers had not told him. It is only right to say that it received some support from fragmentary words—spoken by the great Ludwig in the hour of death, when he looked at Heinrich but pointed at Paul, and said, ‘You have
