Thereupon Marcello turned his back on Corbario, crossed the great library deliberately, and went out without looking round.

Folco was left alone, and his still face did not even express surprise or annoyance. He had indeed foreseen the coming break, ever since he had returned to the villa three weeks earlier, when Marcello had received him with evident coldness, not even explaining where he had been since they had last parted. But Folco had not expected that the rupture would come so suddenly, still less that he was literally to be turned out of the house which he still regarded as his own, and in which he had spent so many prosperous years. There had, indeed, been some coldly angry words between the two men. Marcello had told Folco quite plainly that he meant to be the master, and that he was of age, and should regulate his own life as he pleased, and he had expressed considerable disgust at the existence Folco had been leading in Paris and elsewhere; and Folco had always tried to laugh it off, calling Marcello prudish and hypersensitive in matters of morality, which he certainly was not. Once he had attempted an appeal to Marcello's former affection, recalling his mother's love for them both, but a look had come into the young man's eyes just then which even Corbario did not care to face again, and the relations between the two had become more strained from that time on.

It might seem almost incredible that a man capable of the crimes Corbario had committed in cold blood, for a settled purpose, should show so little power of following the purpose to its accomplishment after clearing the way to it by a murder; but every one who has had to do with criminals is aware that after any great exertion of destructive energy they are peculiarly subject to a long reaction of weakness which very often leads to their own destruction. If this were not a natural law, if criminals could exert continually the same energy and command the same superhuman cunning which momentarily helped them to perpetrate a crime, the world would be in danger of being possessed and ruled by them, instead of being mercifully, and perhaps too much, inclined to treat them as degenerates and madmen. Their conduct after committing a murder, for instance, seems to depend much more on their nerves than on their intelligence, and the time almost invariably comes when their nerves break down. It is upon the moment when this collapse of the will sets in that the really experienced detective counts, knowing that it may be hastened or retarded by circumstances quite beyond the murderer's control. The life of a murderer, after the deed, is one long fight with such circumstances, and if he once loses his coolness he is himself almost as surely lost as a man who is carried away by his temper in a duel with swords.

After Folco had killed his wife and had just failed to kill Marcello, he had behaved with wonderful calm and propriety for a little while; but before long the old wild longing for excitement and dissipation, so long kept down during his married life, had come upon him with irresistible force, and he had yielded to it. Then, in hours of reaction, in the awful depression that comes with the grey dawn after a night of wine and pleasure and play, terrible little incidents had come back to his memory. He had recalled Kalmon's face and quiet words, and his own weakness when he had first come to see Marcello in the hospital—that abject terror which both Regina and the doctor must have noticed—and his first impression that Marcello no longer trusted him as formerly, and many other things; and each time he had been thus disturbed, he had plunged deeper into the dissipation which alone could cloud such memories and keep them out of sight for a time; till at last he had come to live in a continual transition from recklessness to fear and from fear to recklessness, and he had grown to detest the very sight of Marcello so heartily that an open quarrel was almost a relief.

If he had been his former self, he would undoubtedly have returned to his original purpose of killing Marcello outright, since he had not succeeded in killing him by dissipation. But his nerve was not what it had been, and the circumstances were not in his favour. Moreover, Marcello was now of age, and had probably made a will, unknown to Corbario, in which case the fortune would no longer revert to the latter. The risk was too great, since it would no longer be undertaken for a certainty amounting to millions. It was better to be satisfied with the life-interest in one-third of the property, which he already enjoyed, and which supplied him with abundant means for amusing himself.

It was humiliating to be turned out of the house by a mere boy, as he still called Marcello, but he was not excessively sensitive to humiliation, and he promised himself some sort of satisfactory vengeance before long. What surprised him most was that the first quarrel should have been about Aurora. He had more than once said in conversation that he meant to marry the girl, and Marcello had chosen to say nothing in answer to the statement; but when Folco had gone so far as to hint that Aurora was in love with him and was about to accept him, Marcello had as good as given him the lie direct, and a few more words had led to the outbreak recorded at the beginning of this chapter.

As a matter of fact Corbario understood what had led to it better than Marcello himself, who had no very positive reason for entirely disbelieving his stepfather's words. The Contessa and her daughter had returned to Rome, and Corbario often went to see them, whereas Marcello had not been even once. When Marcello had last seen Folco in the Engadine, he had left him sitting in their little room at the hotel. Folco was not at all too old to marry Aurora; he was rich, at least for life, and Aurora was poor; he was good-looking, accomplished, and ready with his tongue. It was by no means impossible that he might make an impression on the girl and ultimately win her. Besides, Marcello felt that odd little resentment against Aurora which very young men sometimes feel against young girls, whom they have thought they loved, or are really about to love, or are afraid of loving, which makes them rude, or unjust, or both, towards those perhaps quite unconscious maidens, and which no woman can ever understand.

"My dear Harry, why will you be so disagreeable to Mary?" asks the wondering mother. "She is such a charming girl, and only the other day she was saying that you are such a nice boy!"

"Humph!" snorts Harry rudely, and forthwith lights his pipe and goes off to the stables to growl in peace, or across country, or to his boat, or to any other heavenly place not infested by women.

There had been moments when, in his heart, Marcello had almost said that it would serve Aurora right to be married to Corbario; yet at the first hint from the latter that she was at all in danger of such a fate, Marcello had broken out as if the girl's good name had been attacked, and had turned his stepfather out of the house in a very summary fashion.