Father Brown had stared at the suddenly crowded garden, the arrest of the man of blood, the carrying away of the corpse after its examination by the doctor, rather as one watches the break-up of some ugly dream; he was motionless, like a man in a nightmare. He gave his name and address as a witness, but declined their offer of a boat to the shore, and remained alone in the island garden, gazing at the broken rose bush and the whole green theatre of that swift and inexplicable tragedy. The light died along the river; mist rose in the marshy banks; a few belated birds flitted fitfully across.
Stuck stubbornly in his sub-consciousness (which was an unusually lively one) was an unspeakable certainty that there was something still unexplained. This sense that had clung to him all day could not be fully explained by his fancy about "looking-glass land." Somehow he had not seen the real story, but some game or masque. And yet people do not get hanged or run through the body for the sake of a charade.
As he sat on the steps of the landing-stage ruminating he grew conscious of the tall, dark streak of a sail coming silently down the shining river, and sprang to his feet with such a backrush of feeling that he almost wept.
"Flambeau!" he cried, and shook his friend by both hands again and again, much to the astonishment of that sportsman, as he came on shore with his fishing tackle. "Flambeau," he said, "so you're not killed?"
"Killed!" repeated the angler in great astonishment. "And why should I be killed?"
"Oh, because nearly everybody else is," said his companion rather wildly. "Saradine got murdered, and Antonelli wants to be hanged, and his mother's fainted, and I, for one, don't know whether I'm in this world or the next. But, thank God, you're in the same one." And he took the bewildered Flambeau's arm.
As they turned from the landing-stage they came under the eaves of the low bamboo house, and looked in through one of the windows, as they had done on their first arrival. They beheld a lamp-lit interior well calculated to arrest their eyes. The table in the long dining-room had been laid for dinner when Saradine's destroyer had fallen like a stormbolt on the island. And the dinner was now in placid progress, for Mrs. Anthony sat somewhat sullenly at the foot of the table, while at the head of it was Mr. Paul, the major domo, eating and drinking of the best, his bleared, bluish eyes standing queerly out of his face, his gaunt countenance inscrutable, but by no means devoid of satisfaction.
With a gesture of powerful impatience, Flambeau rattled at the window, wrenched it open, and put an indignant head into the lamp-lit room.
"Well," he cried. "I can understand you may need some refreshment, but really to steal your master's dinner while he lies murdered in the garden——"
"I have stolen a great many things in a long and pleasant life," replied the strange old gentleman placidly; "this dinner is one of the few things I have not stolen. This dinner and this house and garden happen to belong to me."
A thought flashed across Flambeau's face. "You mean to say," he began, "that the will of Prince Saradine——"
"I am Prince Saradine," said the old man, munching a salted almond.
Father Brown, who was looking at the birds outside, jumped as if he were shot, and put in at the window a pale face like a turnip.
"You are what?" he repeated in a shrill voice.
"Paul, Prince Saradine, à vos ordres," said the venerable person politely, lifting a glass of sherry. "I live here very quietly, being a domestic kind of fellow; and for the sake of modesty I am called Mr. Paul, to distinguish me from my unfortunate brother Mr. Stephen. He died, I hear, recently—in the garden. Of course, it is not my fault if enemies pursue him to this place. It is owing to the regrettable irregularity of his life. He was not a domestic character."
He relapsed into silence, and continued to gaze at the opposite wall just above the bowed and sombre head of the woman. They saw plainly the family likeness that had haunted them in the dead man. Then his old shoulders began to heave and shake a little, as if he were choking, but his face did not alter.
"My God!" cried Flambeau after a pause, "he's laughing!"
"Come away," said Father Brown, who was quite white. "Come away from this house of hell. Let us get into an honest boat again."
Night had sunk on rushes and river by the time they had pushed off from the island, and they went down-stream in the dark, warming themselves with two big cigars that glowed like crimson ships' lanterns. Father Brown took his cigar out of his mouth and said:
"I suppose you can guess the whole story now? After all, it's a primitive story. A man had two enemies. He was a wise man. And so he discovered that two enemies are better than one."
"I do not follow that," answered Flambeau.
"Oh, it's really simple," rejoined his friend. "Simple, though anything but innocent. Both the Saradines were scamps, but the prince, the elder, was the sort of scamp that gets to the top, and the younger, the captain, was the sort that sinks to the bottom. This squalid officer fell from beggar to blackmailer, and one ugly day he got his hold upon his brother, the prince. Obviously it was for no light matter, for Prince Paul Saradine was frankly 'fast,' and had no reputation to lose as to the mere sins of society. In plain fact, it was a hanging matter, and Stephen literally had a rope round his brother's neck. He had somehow discovered the truth about the Sicilian affair, and could prove that Paul murdered old Antonelli in the mountains. The captain raked in the hush money heavily for ten years, until even the prince's splendid fortune began to look a little foolish.
"But Prince Saradine bore another burden besides his blood-sucking brother. He knew that the son of Antonelli, a mere child at the time of the murder, had been trained in savage Sicilian loyalty, and lived only to avenge his father, not with the gibbet (for he lacked Stephen's legal proof), but with the old weapons of vendetta. The boy had practised arms with a deadly perfection, and about the time that he was old enough to use them Prince Saradine began, as the society papers said, to travel. The fact is that he began to flee for his life, passing from place to place like a hunted criminal; but with one relentless man upon his trail. That was Prince Paul's position, and by no means a pretty one. The more money he spent on eluding Antonelli the less he had to silence Stephen. The more he gave to silence Stephen the less chance there was of finally escaping Antonelli. Then it was that he showed himself a great man—a genius like Napoleon.
"Instead of resisting his two antagonists, he surrendered suddenly to both of them. He gave way like a Japanese wrestler, and his foes fell prostrate before him. He gave up the race round the world, and he gave up his address to young Antonelli; then he gave up everything to his brother. He sent Stephen money enough for smart clothes and easy travel, with a letter saying roughly: 'This is all I have left. You have cleaned me out. I still have a little house in Norfolk, with servants and a cellar, and if you want more from me you must take that. Come and take possession if you like, and I will live there quietly as your friend or agent or anything.' He knew that the Sicilian had never seen the Saradine brothers save, perhaps, in pictures; he knew they were somewhat alike, both having grey, pointed beards. Then he shaved his own face and waited. The trap worked. The unhappy captain, in his new clothes, entered the house in triumph as a prince, and walked upon the Sicilian's sword.
"There was one hitch, and it is to the honour of human nature. Evil spirits like Saradine often blunder by never expecting the virtues of mankind. He took it for granted that the Italian's blow, when it came, would be dark, violent and nameless, like the blow it avenged; that the victim would be knifed at night, or shot from behind a hedge, and so die without speech. It was a bad minute for Prince Paul when Antonelli's chivalry proposed a formal duel, with all its possible explanations. It was then that I found him putting off in his boat with wild eyes. He was fleeing, bareheaded, in an open boat before Antonelli should learn who he was.
"But, however agitated, he was not hopeless. He knew the adventurer and he knew the fanatic. It was quite probable that Stephen, the adventurer, would hold his tongue, through his mere histrionic pleasure in playing a part, his lust for clinging to his new cosy quarters, his rascal's trust in luck, and his