"Quite right. She was there. I was on my way to my room. If your house had electricity, Bobby, this incident would have been avoided. I saw something dark in the corridor."
"You may not know," Graham said, "that ever since we found Howells, one of us has tried, more or less, to keep the entrance of that room under observation."
"Yet you were all downstairs a little while ago," Paredes yawned. "It's too bad. I might have taken my turn then. At any rate, since I was excluded from your confidence, I overcame my natural fear, and, for Bobby's sake, slipped in, and, I am afraid, startled Miss Katherine."
"Yes," she said.
His explanation was reasonable. There was nothing more to be said, but Bobby's doubt of his friend, sown by Graham and stimulated by the incidents of the last hour, was materially strengthened. He felt a sharp fear of Paredes. Such reserve, such concealment of emotion, was scarcely human.
"If," Graham was saying, "you really want to help Bobby, there is something you can do. Will you come downstairs with me for a moment? I'd like to suggest one or two things before the police arrive."
Without hesitation Paredes followed Graham down the stairs.
Katherine turned immediately to Bobby, her eyes eager, full of the tense determination that had dictated her plan in the library.
"Now, Bobby!" she whispered. "And there's no time to waste. They may be here any minute. I won't see you go, but I'll be back at once to guard you against Paredes if he slips up again."
She walked across the hall and disappeared in the newer corridor. Without witness he faced the old corridor, and with the attempt directly ahead his repugnance achieved a new power. The black entrance with its scarcely dared memories reminded him that what he was about to do was directed against more than human law, was an outrage against the dead man. He had to remind himself of the steely purpose with which Howells had marked him as the murderer; and the man's power persisted after death. In such a contest he was justified.