Unfortunately, as he turned to beat a retreat, his foot rolled upon a pebble; he fell against the wall with an ejaculation, and his sword rang loudly on the stones. Two or three voices demanded who went there--some in French, some in English; but Denis made no reply, and ran the faster down the lane. Once upon the terrace, he paused to look back. They still kept calling after him, and just then began to double the pace in pursuit, with a considerable clank of armour, and great tossing of the torchlight to and fro in the narrow jaws of the passage. Denis cast a look around and darted into the porch. There he might escape observation, or--if that were too much to expect--was in a capital posture whether for parley or defence. So thinking, he drew his sword and tried to set his back against the door. To his surprise, it yielded behind his weight; and though he turned in a moment, continued to swing back on oiled and noiseless hinges, until it stood wide open on a black interior. When things fall out opportunely for the person concerned, he is not apt to be critical about the how or why, his own immediate personal convenience seeming a sufficient reason for the strangest oddities and revolutions in our sublunary things; and so Denis, without a moment's hesitation, stepped within and partly closed the door behind him to conceal his place of refuge. Nothing was further from his thoughts than to close it altogether; but for some inexplicable reason--perhaps by a spring or a weight--the ponderous mass of oak whipped itself out of his fingers and clanked to, with a formidable rumble and noise like the falling of an automatic bar. The round, at that very moment, debouched upon the terrace, and proceeded to summon him with shouts and curses. He heard them ferreting in the dark corners; the stock of a lance even rattled along the outer surface of the door behind which he stood; but these gentlemen were in too high a humour to be long delayed, and soon made off down a corkscrew pathway which had escaped Denis's observation, and passed out of sight and hearing along the battlements of the town.