Prince Renine was making none but positive statements and his method suggested the belief that he supported by the strongest proofs.

M. d'Aigleroche strode up and down the room, with his hands behind his back. He ended by saying:

"I always had an instinctive feeling that something had happened, but I never tried to find out.... Now, as a matter of fact, twenty years ago, a relation of mine, a distant cousin, used to live at the Domaine de Halingre. I hoped, because of the name I bear, that this story, which, as I say, I never knew but suspected, would remain hidden for ever."

"So this cousin killed somebody?"

"Yes, he was obliged to."

Renine shook his head:

"I am sorry to have to amend that phrase, my dear sir. The truth, on the contrary, is that your cousin took his victims' lives in cold blood and in a cowardly manner. I never heard of a crime more deliberately and craftily planned."

"What is it that you know?"

The moment had come for Renine to explain himself, a solemn and anguish-stricken moment, the full gravity of which Hortense understood, though she had not yet divined any part of the tragedy which the prince unfolded step by step."

"It's a very simple story," he said. "There is every reason to believe that M. d'Aigleroche was married and that there was another couple living in the neighbourhood with whom the owner of the Domaine de Halingre were on friendly terms. What happened one day, which of these four persons first disturbed the relations between the two households, I am unable to say. But a likely version, which at once occurs to the mind, is that your cousin's wife, Madame d'Aigleroche, was in the habit of meeting the other husband in the ivy-covered tower, which had a door opening outside the estate. On discovering the intrigue, your cousin d'Aigleroche resolved to be revenged, but in such a manner that there should be no scandal and that no one even should ever know that the guilty pair had been killed. Now he had ascertained--as I did just now--that there was a part of the house, the belvedere, from which you can see, over the trees and the undulations of the park, the tower standing eight hundred yards away, and that this was the only place that overlooked the top of the tower. He therefore pierced a hole in the parapet, through one of the former loopholes, and from there, by using a telescope which fitted exactly in the grove which he had hollowed out, he watched the meetings of the two lovers. And it was from there, also, that, after carefully taking all his measurements, and calculating all his distances, on a Sunday, the 5th of September, when the house was empty, he killed them with two shots."

The truth was becoming apparent. The light of day was breaking. The count muttered:

"Yes, that's what must have happened. I expect that my cousin d'Aigleroche...."

"The murderer," Renine continued, "stopped up the loophole neatly with a clod of earth. No one would ever know that two dead bodies were decaying on the top of that tower which was never visited and of which he took the precaution to demolish the wooden stairs. Nothing therefore remained for him to do but to explain the disappearance of his wife and his friend. This presented no difficulty. He accused them of having eloped together."

Hortense gave a start. Suddenly, as though the last sentence were a complete and to her an absolutely unexpected revelation, she understood what Renine was trying to convey:

"What do you mean?" she asked.

"I mean that M. d'Aigleroche accused his wife and his friend of eloping together."

"No, no!" she cried. "I can't allow that!... You are speaking of a cousin of my uncle's? Why mix up the two stories?"

"Why mix up this story with another which took place at that time?" said the prince. "But I am not mixing them up, my dear madame; there is only one story and I am telling it as it happened."

Hortense turned to her uncle. He sat silent, with his arms folded; and his head remained in the shadow cast by the lamp-shade. Why had he not protested?

Renine repeated in a firm tone:

"There is only one story. On the evening of that very day, the 5th of September at eight o'clock, M. d'Aigleroche, doubtless alleging as his reason that he was going in pursuit of the runaway couple, left his house after boarding up the entrance. He went away, leaving all the rooms as they were and removing only the firearms from their gla.s.s case. At the last minute, he had a presentiment, which has been justified to-day, that the discovery of the telescope which had played so great a part in the preparation of his crime might serve as a clue to an enquiry; and he threw it into the clock-case, where, as luck would have it, it interrupted the swing of the pendulum. This unreflecting action, one of those which every criminal inevitably commits, was to betray him twenty years later.

Just now, the blows which I struck to force the door of the drawing-room released the pendulum. The clock was set going, struck eight o'clock ...

and I possessed the clue of thread which was to lead me through the labyrinth."

"Proofs!" stammered Hortense. "Proofs!"

"Proofs?" replied Renine, in a loud voice. "Why, there are any number of proofs; and you know them as well as I do. Who could have killed at that distance of eight hundred yards, except an expert shot, an ardent sportsman? You agree, M. d'Aigleroche, do you not?... Proofs? Why was nothing removed from the house, nothing except the guns, those guns which an ardent sportsman cannot afford to leave behind--you agree, M.

d'Aigleroche--those guns which we find here, hanging in trophies on the walls!... Proofs? What about that date, the 5th of September, which was the date of the crime and which has left such a horrible memory in the criminal's mind that every year at this time--at this time alone--he surrounds himself with distractions and that every year, on this same 5th of September, he forgets his habits of temperance? Well, to-day, is the 5th of September.... Proofs? Why, if there weren't any others, would that not be enough for you?"

And Renine, flinging out his arm, pointed to the Comte d'Aigleroche, who, terrified by this evocation of the past, had sunk huddled into a chair and was hiding his head in his hands.

Hortense did not attempt to argue with him. She had never liked her uncle, or rather her husband's uncle. She now accepted the accusation laid against him.

Sixty seconds pa.s.sed. Then M. d'Aigleroche walked up to them and said:

"Whether the story be true or not, you can't call a husband a criminal for avenging his honour and killing his faithless wife."

"No," replied Renine, "but I have told only the first version of the story.

There is another which is infinitely more serious ... and more probable, one to which a more thorough investigation would be sure to lead."

"What do you mean?"

"I mean this. It may not be a matter of a husband taking the law into his own hands, as I charitably supposed. It may be a matter of a ruined man who covets his friend's money and his friend's wife and who, with this object in view, to secure his freedom, to get rid of his friend and of his own wife, draws them into a trap, suggests to them that they should visit that lonely tower and kills them by shooting them from a distance safely under cover."

"No, no," the count protested. "No, all that is untrue."

"I don't say it isn't. I am basing my accusation on proofs, but also on intuitions and arguments which up to now have been extremely accurate. All the same, I admit that the second version may be incorrect. But, if so, why feel any remorse? One does not feel remorse for punishing guilty people."

"One does for taking life. It is a crushing burden to bear."

"Was it to give himself greater strength to bear this burden that M.

d'Aigleroche afterwards married his victim's widow? For that, sir, is the crux of the question. What was the motive of that marriage? Was M.

d'Aigleroche penniless? Was the woman he was taking as his second wife rich? Or were they both in love with each other and did M. d'Aigleroche plan with her to kill his first wife and the husband of his second wife?

These are problems to which I do not know the answer. They have no interest for the moment; but the police, with all the means at their disposal, would have no great difficulty in elucidating them."

M. d'Aigleroche staggered and had to steady himself against the back of a chair. Livid in the face, he spluttered:

"Are you going to inform the police?"

"No, no," said Renine. "To begin with, there is the statute of limitations.

Then there are twenty years of remorse and dread, a memory which will pursue the criminal to his dying hour, accompanied no doubt by domestic discord, hatred, a daily h.e.l.l ... and, in the end, the necessity of returning to the tower and removing the traces of the two murders, the frightful punishment of climbing that tower, of touching those skeletons, of undressing them and burying them. That will be enough. We will not ask for more. We will not give it to the public to batten on and create a scandal which would recoil upon M. d'Aigleroche's niece. No, let us leave this disgraceful business alone."

The count resumed his seat at the table, with his hands clutching his forehead, and asked:

"Then why ...?"

"Why do I interfere?" said Renine. "What you mean is that I must have had some object in speaking. That is so. There must indeed be a penalty, however slight, and our interview must lead to some practical result. But have no fear: M. d'Aigleroche will be let off lightly."

The contest was ended. The count felt that he had only a small formality to fulfil, a sacrifice to accept; and, recovering some of his self-a.s.surance, he said, in an almost sarcastic tone:

"What's your price?"

Renine burst out laughing:

"Splendid! You see the position. Only, you make a mistake in drawing me into the business. I'm working for the glory of the thing."

"In that case?"

"You will be called upon at most to make rest.i.tution."