"To get him out of the neighbourhood for the night?"
"Yes. And but for the mere accident of the fellow's having discovered that the typist girl was out of England, he would have succeeded without having to resort to other means."
"How do you know that the General typed the letter?" asked Miss Lorne.
"I didn't in the beginning," returned Cleek. "I did know, however, that it had been typed by somebody in this house; for I stole the letter, then tricked Hamer into getting me an unused sheet of the typing paper that was left over from the manuscript of the General's book. A glance at the watermark showed them to be identical; in other words, that the letter had been typed upon one of those left-over sheets. Well, that was one thing; the other was that the General, having failed to get his son out of the way for to-night by that means, took steps to accomplish it by drugging him."
"Drugging him?"
"Yes. Earlier in the day Purviss had brought him a note from Lady Clavering, and it was imperative that he should go out to-night to meet her in secret. He didn't want his son prowling about, and he didn't want me prowling about, either. Still less did he want you prowling about, or that his wife should know of his leaving the house after she had gone to bed. To make sure of having no such risk to run, he put a sleeping draught into every drop of spirit or liqueur that was served in this house to-night. What he had not reckoned upon, however, was the fact that neither you nor I tasted either. But at this moment his son lies drugged and unconscious in the dining-room, and it would be a safe hazard to stake one's life that his wife is lying unconscious in bed."
"But—but—are you sure there is no mistake?"
"No, Miss Lorne, there is no mistake. It was the General who did the drugging. I found the paper in which the sleeping draught had come from the chemist's in the waste basket in the library; and when I wanted to clench the belief and make it absolutely positive, I tricked the General into confessing that he stood in need of a stimulant after the stress of the night, then invited him to join me in one from the decanters in the dining-room. He knew what was in that liqueur and—he declined. I knew then that there was no mistake about his being the hand that had done the drugging, just as I had known previously that he was the man Lady Clavering had met at the wall door.
"When I rushed past you that time and raced through these grounds, I had no more idea than a child unborn who the man I was pursuing would prove to be. He might have been Harry Raynor; he might have been Lord St. Ulmer. I even said to myself that he might be any male member of this household from the General down; and my one idea was to get to the house and to find which man was missing. I found no one absent! St. Ulmer was in his bedroom; Harry Raynor was sleeping over the table in the dining-room; and as I came clattering down the stairs the General stepped out of the library to inquire into the cause of the disturbance. To all intents and purposes he had been in there reading the whole evening long. But it was a significant fact that as he opened the door and came out, I was able to see past him into the room and to discern that the curtains drawn over the swinging window were bellying inward, showing that the opening of the door had started a current of air which could be created only by the window behind them being likewise open.
"That gave me the first suspicion of a clue. I looked at the man himself for further evidence to back it up and, in the first glance, found it. There was black soil on the toes of his house shoes and a smudge of green wall-moss on his shirt cuff! I knew then just what he had done, and how I had failed to overhaul him in that hot race. He had simply ducked down out of sight, lain still in the bushes and allowed me to run past him. For me there was, of course, no other means of entering the house but by the door; for him there was the library window! He waited to give me time to get into the house, then rose, ran across the intervening space and back into the library by means of that window, and had had just about sufficient time to get there when I came rushing down the stairs. You will remember, will you not, that I spoke of those two things: the spot of black and smudge of green? You know now to what I alluded."