Denry tried one door after another, and they were all fastened firmly on the outside. The gilded handles would turn, but the lofty and ornate portals would not yield to pressure. Mystified and startled, he went back to the place from which he had begun his explorations, and was even more seriously startled, and more deeply mystified to find nothing but a blank wall where he had entered. Obviously he could not have penetrated through a solid wall. A careful perusal of the wall showed him that there was indeed a door in it, but that the door was artfully disguised by painting and other devices so as to look like part of the wall. He had never seen such a phenomenon before. A very small glass knob was the door's sole fitting. Denry turned this crystal, but with no useful result. In the brief space of time since his entrance, that door, and the door by which Jock had gone, had been secured by unseen hands. Denry imagined sinister persons bolting all the multitudinous doors, and inimical eyes staring at him through many keyholes. He imagined himself to be the victim of some fearful and incomprehensible conspiracy. Why, in the sacred name of common-sense, should he have been imprisoned in the state suite? The only answer to the conundrum was that nobody was aware of his quite unauthorised presence in the state suite. But then why should the state suite be so suddenly locked up, since the Countess had just come in from a drive? It then occurred to him that, instead of just coming in, the Countess had been just leaving. The carriage must have driven round from some humbler part of the Hall, with the lady in black in it, and the lady in black--perhaps a lady's-maid--alone had stepped out from it. The Countess had been waiting for the carriage in the porch, and had fled to avoid being forced to meet the unfortunate Denry. (Humiliating thought!) The carriage had then taken her up at a side door. And now she was gone. Possibly she had left Sneyd Hall not to return for months, and that was why the doors had been locked. Perhaps everybody had departed from the Hall save one aged and deaf retainer--he knew, from historical novels which he had glanced at in his youth, that in every Hall that respected itself an aged and deaf retainer was invariably left solitary during the absences of the noble owner. He knocked on the small disguised door. His unique purpose in knocking was naturally to make a noise, but something prevented him from making a noise. He felt that he must knock decently, discreetly; he felt that he must not outrage the conventions. No result to this polite summoning. He attacked other doors; he attacked every door he could put his hands on; and gradually he lost his respect for decency and the conventions proper to Halls, knocking loudly and more loudly. He banged. Nothing but sheer solidity stopped his sturdy hands from going through the panels. He so far forgot himself as to shake the doors with all his strength furiously.