The man pointed to a mahogany door at the end of the long, lofty hall. Richard opened it, and found himself, not in a library, but in a small rectangular windowless apartment, clearly intended for the reception of hats and coats. Suspecting a ruse, he stepped quickly into the hall. ‘Not that door, the next one,’ said the man, quietly enough. Richard followed the man’s instructions, and very silently opened the next door. A large room disclosed itself, with a long table down the centre of it. The place did not bear much resemblance to a library. It was, in fact, the breakfast-room, and the library lay beyond it. At the furthest corner, opposite another door, a man was seated on a chair. His eyes seemed to be glued on to the door which he watched. ‘Come along, Terrell,’ this man whispered, without moving his head, as Richard entered. Richard accordingly came along, and was upon the man in the chair before the latter had perceived that another than Terrell--whoever Terrell might be--had thrust himself into the plot. ‘Silence!’ said Richard; ‘I am a detective. Come out.’ The revolver and Richard’s unflinching eye did the rest. Richard led the astonished and unresisting man into the hall, and then locked him up in the hat and coat room, and put the key of the door in his pocket. He returned to the other room, locked its door on the inside, so as to preclude the approach of the expected Terrell, and took the empty chair in front of the far door. He guessed that Simon Lock, and perhaps Raphael Craig, were on the other side of that door. ‘Up to now,’ he reflected, ‘it’s been fairly simple.’ There was absolute silence. It was as though the great house had hushed itself in anticipation of a great climax. Then Richard heard a voice in the room beyond. It was Simon Lock’s voice. Richard instantly tried the door, turning the handle very softly and slowly. It was latched, but not locked. Using infinite precautions, he contrived to leave the door open about half an inch. Through this half-inch of space he peered into the library. He saw part of a large square desk and an armchair. In this armchair sat Raphael Craig, and Raphael Craig was tied firmly to the chair with ropes. He could not see Simon Lock, and he dared not yet push the door further open. ‘Now, Craig,’ the voice of Simon Lock was saying, ‘don’t drive me to extreme measures.’ For answer Raphael Craig closed his eyes, as if bored. His face had a disgusted, haughty expression. ‘You’ve got no chance,’ said Simon Lock.