It was with a feeling that the hand of Destiny was upon him that Colwyn turned from the window and regarded the little room with keen curiosity. Its drab interior held a secret which was a challenge to his intelligence to discover. What had happened in that room the night Ronald slept there? He noted the articles of furniture one by one. Nothing seemed changed since he had last been in the room, the day after the murder was committed. There was a washstand near the window, a chest of drawers, a dressing table and a large wardrobe at the side of the bed. Colwyn looked at this last piece of furniture with the same interest he had felt when he saw it the first time. It was far too big and cumbrous a wardrobe for so small a room, about eight feet high and five feet in width, and it was placed in the most inconvenient part of the room, by the side of the bed, not far from the wall which abutted on the passage. He opened its double doors and looked within. The wardrobe was empty. Colwyn made a methodical search of the room in the hope of discovering something which would throw light on the events of the night of the murder. Doubtless the room had not been occupied since Penreath had slept there, and he might have left something behind him--perhaps some forgotten scrap of paper which might help to throw light on this strange and sinister mystery. In the detection of crime seeming trifles often lead to important discoveries, as nobody was better aware than Colwyn. But though he searched the room with painstaking care, he found nothing. It was while he was thus engaged that a faint rustle aroused his attention, and looking towards the corner of the room whence it proceeded, he saw a large rat crouching by the skirting-board watching him with malevolent eyes. Colwyn looked round for a weapon with which to hit it. The creature seemed to divine his intentions, for it scuttled squeaking across the room, and disappeared behind the wardrobe. Colwyn approached the wardrobe and pushed it back. As he did so, he had a curious sensation which he could hardly define. It was as though an unseen presence had entered the room, and was silently watching him. His actions seemed not of his own volition; it was as though some force stronger than himself was urging him on. And, withal, he had the uncanny feeling that the whole incident of the rat and the wardrobe, and his share in it, was merely a repetition of something which had happened in the room before. The wardrobe moved much more easily than he had expected, considering its weight and size. There was no rat behind it, but a hole under the skirting showed where the animal had made its escape. But it was the space where the wardrobe had stood that claimed Colwyn's attention. The reason why it had been placed in its previous position was made plain. The damp had penetrated the wall on that side, and had so rotted the wall paper that a large portion of it had fallen away.