Bernard de Rohan saw not the expression upon the countenance of his companion, although the night was clear and bright, and sufficient light remained in the heavens to make even small objects visible; but his eyes were at that moment fixed upon the castle of Masseran, and more especially upon one of the outstanding towers to the northeast, separated from the rest of the building by a space of two or three hundred yards, and only attached to it by walls and minor fortifications. In that tower there appeared a great light, at first streaming through some of the upper loopholes only. After a moment or two, however, it became brighter and brighter, and poured through all the windows of the story below. Bernard de Rohan could almost have imagined that, as he gazed, he saw flames come forth and lick the dark stonework of the tower; and he was soon confirmed in the belief that it was so, by the wreaths of pale white smoke which began to ascend into the dark air, and in a minute or two formed a cloud above the tower, acquiring a red and ominous hue as the fire below increased. "Look there! look there!" he exclaimed, catching Corse de Leon's arm; but, even as he spoke, the roof of the tower fell in, and a pyramid of flame shot upward into the sky. "Yes, I see," replied Corse de Leon; "but here come the horses! and we must go quick to the spot where I trust we shall find her whom you seek for. Then, get you across the frontier into France as soon as may be. Your own men will be sufficient to protect you, and will be glad to see you; for, notwithstanding that they may, as you think, love your fair Isabel well, they would not have gone unless we had put a light deceit upon them, and had left them to think, more than told them it was so, that you and the lady were together. Those I have with me here dare not set foot within that land, and the other friends I have are far distant. That was the reason I did not make her free myself, and punish that slight traitor as he deserves." While he spoke, three or four horsemen appeared, leading two other horses, and, without taking any farther notice of the conflagration, Corse de Leon put his foot in the stirrup, and, springing into the saddle, rode on towards the little inn which we have often before had occasion to mention. The young cavalier followed his example; but, before they had gone a hundred yards, a loud explosion took place, which shook the rocks around, and echoed afar through the valley. Their horses started at the sound, and Bernard and his companion turned their eyes towards the castle of Masseran. The burning tower had now lost all shape and form, though part of the walls still remained, with the fire clinging to them in various places.