In reality, however, Martial was not poking fun at him. Bold as was his remark it was made advisedly. To silence all future suspicions it was absolutely necessary that an investigation should take place immediately. But then it would, by reason of their position and functions, naturally devolve on the duke and the marquis, who would know just how much to conceal, and how much to disclose. They began their task immediately, with a haste which could not fail to dispel all doubts, if indeed any existed in the minds of their subordinates. Martial thought he knew the details of the escape as well as the fugitives themselves, for even if they had been the actors, he was at any rate the author of the drama played that night. However, he was soon obliged to admit that he was mistaken in his opinion; for the investigation revealed several incomprehensible particulars. It had been determined beforehand that the baron and the corporal would have to make two successive descents. Hence the necessity of having two ropes. These ropes had been provided, and the prisoners must have used them. And yet only one rope could be found--the one which the peasant woman had perceived hanging from the rocky platform at the base of the citadel where it was made fast to an iron crowbar. From the window of the cell, to the platform, there was no rope, however. “This is most extraordinary!” murmured Martial, thoughtfully. “Very strange!” approved M. de Courtornieu. “How the devil could they have reached the base of the tower?” “That is what I can’t understand.” But Martial soon found other causes for surprise. On examining the rope that remained--the one which had been used in making the descent of the cliff--he discovered that it was not of a single piece. Two pieces had been knotted together. The longest piece had evidently been too short. How did this happen? Could the duke have made a mistake in the height of the cliff? or had the abbe measured the rope incorrectly? But Martial had also measured it with his eye, while it was wound round him, and it had then seemed to him that the rope was much longer, fully a third longer, than it now appeared. “There must have been some accident,” he remarked to his father and the marquis; “what I can’t say.” “Well, what does it matter?” replied M. de Courtornieu, “you have the compromising letter, haven’t you?” But Martial’s mind was one of these that never rest, until they have solved the problem before them. Accordingly, he insisted on going to inspect the rocks at the foot of the precipice. Here they discovered several stains, formed of coagulated blood. “One of the fugitives must have fallen,” said Martial, quickly, “and been dangerously wounded!” “Upon my word!” exclaimed the Duke de Sairmeuse, “if it is the Baron d’Escorval, who has broken his neck, I shall be delighted!”