But the miscreant was evidently on the watch, Briot still lingered on the top of the stairs, there were other people sleeping in the house, and St. Genis suddenly realised that his purpose would not be quite so easy of execution as he had hot-headedly supposed. But the end in view was great, and St. Genis was not a man easily deterred from a set purpose. There was the royalist cause to aid and Crystal to be won if he were successful. He knocked resolutely at the door, then tried the latch. The door was locked: but even as the young man hesitated for a moment wondering what he would do next, a firm step resounded on the floor on the other side of the partition and the next moment the door was opened from within, and a peremptory voice issued the usual challenge: "Who goes there?" A tall figure appeared as a massive silhouette under the lintel. St. Genis had the candle in his hand. He dropped it in his astonishment. "Mr. Clyffurde!" he exclaimed. At sight of St. Genis the Englishman, whose right arm was in a sling, had made a quick instinctive movement back into the room, but equally quickly Maurice had forestalled him by placing his foot across the threshold. Then he turned back to Aristide Briot. "That's all right, petit père," he called out airily, "it is indeed my friend, just as I thought. I'm going to stay and have a little chat with him. Don't wait up for me. When he is tired of my company I'll go back to the parlour and make myself happy in front of the fire. Good-night!" As Clyffurde no longer stood in the doorway, St. Genis walked straight into the room and closed the door behind him, leaving good old Aristide to draw what conclusions he chose from the eccentric behaviour of his nocturnal visitors. With a rapid and wrathful gaze, St. Genis at once took stock of everything in the room. A sigh of satisfaction rose to his lips. At any rate the rogue could not deny his guilt. There, hanging on a peg, was the caped coat which he had worn, and there on the table were two damning proofs of his villainy--a pair of pistols and a black mask. The whole situation puzzled him more than he could say. Certainly after the first shock of surprise he had felt his wrath growing hotter and hotter every moment, the other man's cool assurance helped further to irritate his nerves, and to make him lose that self-control which would have been of priceless value in this unlooked-for situation. Seeing that Maurice de St. Genis was absolutely speechless with surprise as well as with anger, there crept into Clyffurde's deep-set grey eyes a strange look of amusement, as if the humour of his present position was more obvious than its shame. "And what," he asked pleasantly, "has procured me the honour at this late hour of a visit from M. le Marquis de St. Genis?"