"That I will never do."
"Then you compel me to go to the authorities and tell them what I have discovered. I will save you in spite of yourself."
"Do you think that I want to be saved—like that?"
Struggling desperately for self-control Penreath turned to Mr. Oakham. "Why did you bring Mr. Colwyn here?" he asked the solicitor fiercely. "To torture me?"
Before Mr. Oakham could reply Colwyn laughed aloud. A clear ringing laugh of unmistakable satisfaction. The laugh sounded strangely incongruous in such a place.
"Penreath," he said, "you've told me all that I came here to know. You're a splendid young Briton, but finesse is not your strong point. You've acted like a quixotic young idiot in this case, and got yourself into a nice muddle for nothing. The girl is as innocent as you are, and you are a pair of simpletons! Yes. I mean what I say," continued the detective, answering the young man's amazed look with a reassuring smile. "Do you think that I would want to save you at her expense? Now perhaps, when I have told you what happened that night, you will answer a few questions. Before you went to bed you sat down and wrote a letter on a leaf torn from your pocket-book. That letter was to Miss Willoughby, breaking off your engagement. After writing it you went to bed. At that time it was raining hard.
"You must have fallen asleep almost immediately, and slept for half an hour—perhaps a little more—for when you awoke the rain had ceased. You heard a slight noise in your room, and lit your candle to see what it was. There was a rat in the corner of the room. You got up to throw something at it, but as soon as you moved the rat darted across the room and disappeared behind the wardrobe at the side of the bed. You pushed back the wardrobe and——"
"For God's sake, say no more!" said Penreath. His face was grey, and he was staring at the detective with the eyes of a man who saw his heart's secret—the secret for which he was prepared to die—being dragged out into the light of day. "How did you learn all this?"
"That does not matter much just now. What you saw through the wall made you determine to leave the house as speedily as possible, and also caused you to destroy the letter you had written to Miss Willoughby.
"You were wrong in what you did. In the first place, you misinterpreted what you saw through the door in the wall. By thinking Peggy guilty and leaving the inn early in the morning, you not only wronged her grievously, but brought suspicion on yourself. Peggy's presence in the room was quite by accident. She had gone to ask Mr. Glenthorpe to assist you in your trouble, by lending you money, and, finding the door open, she impulsively went in and found him dead—murdered. And at the bedside she picked up the knife—the knife you had used at dinner—and this."