The room was much as we had left it the evening before. The typed papers had disappeared, but a sheet which I recognised as the one I had picked up from the kitchen floor the day of my arrival lay on the table in full view. Beside it was the clean blotting pad that I had never yet seen used. Bryce took no notice of the sheet of figures, but lifted the pad up, and, drawing a magnifying glass from his pocket, ran his eyes over the rough white surface. Moira and I watched him with unfeigned interest. At last he looked up.

"Just as I thought," he remarked. "Have a look yourself, Jim." He handed both glass and pad to me. I studied the latter for some seconds before I quite dropped to what he meant. Gradually I made out figures impressed on the rough surface. Our midnight visitor had made a copy of that single sheet, had made it hurriedly in pencil, and the impression had gone through on to the receptive softness of the blotting paper. My scrutiny over, I handed the materials to Moira.

"You understand?" Bryce queried, with little laughter-wrinkles about his eyes.

"I do," I said admiringly. "I don't know what the man was after, but he didn't get it. He got a fake instead."

Bryce nodded. "He's up a gum-tree instead of under one," he said enigmatically.

I made no answer to that, chiefly because it struck me that it was the sort of remark that meant a good deal more than appeared on the surface. I tucked it away in my memory, quite confident that sooner or later the march of events would make it clear to me. As a matter of fact, if I hadn't taken so much notice of that simple sentence, this story would never have been written, for the key to everything was contained in that casual remark.

"Nothing else has been disturbed," Bryce announced, and included the whole room in one comprehensive gesture. "I'm going back to bed for a couple of hours. You young people can do just what you like."

He hustled us out of the room, shut the door carefully behind us, and went off to his room. Moira made no attempt to follow his example, but stood in the passage with her deep golden-brown eyes fixed on me. There was a look in them that I could not quite fathom; it whirled me back through five years of sorrow and stress, brought me back to the days when——. No, I wasn't going to think about it at all. It didn't bring me back to anything; it brought nothing back to me. Yet I could not help remarking that her eyes held solicitude for me and something that was more than that.

"Aren't you going back to rest?" I asked, and was surprised to note that there was both interest and defiance in my voice.

"I want to talk to you," she said, answering my question by inference. "I want to talk seriously to you."

So it was coming at last. She intended putting Bryce's advice into execution. Perhaps she thought it was merely a matter of telling me that she was sorry for what had occurred, and then everything would begin again just where it had left off. If she thought so she was radically mistaken. My love had been rejected and I had been wounded in my pride. Through four long years of repression the knowledge had rankled in my mind till now the very sight of her standing there and beseeching me with her eyes was more than I could bear. I would not have been human had I not felt the old wound pricking me again, and I certainly would not have been a Carstairs had the mere sight of her apparent contrition moved me to forgive her on the spot. I was quite willing to be friendly, I told myself, but by nothing short of a miracle could we regain the old footing. The worst of it was that something moved me to take her in my arms then and there and kiss away the tears that were very near her eyes.

"I don't know what to say to you, Jim," she said tentatively.

"There's no need to say anything, Moira." I tried to speak as kindly as possible, but somehow I think I failed. "I happened to overhear you and your uncle yesterday, and I know just what you mean. But, Moira, I don't see how things can ever be the same again. It isn't as if it were something I could forget. It isn't. It goes right down to the fundamentals. If our love wouldn't stand the strain I put on it, it wasn't worth having. I hate to have to speak to you like this, but, when all's said and done, it's just as well to be frank first as last."

She nodded with tight-closed lips. I saw that she was trying her hardest to keep control of herself, and for a moment it was touch and go with me. I very seldom set my mind to anything that I don't carry through, and in this instance I had a very clear and definite plan outlined in my mind. So I just set my teeth and carried it off as if nothing really mattered very much.

"You heard us yesterday then?" she said at length. She spoke so slowly that she almost drawled her words.

I nodded.

"That's what you were doing then when I came out of the room?"

"Exactly," I said. I fancied it would only make matters worse if I explained everything in detail.

"I was wrong, Jim, and I apologise," she said. There was a little gleam of flame in her eyes that made me hang on her words. "I was wrong," she repeated. "I said yesterday that you had changed, but I don't think you have. You're just the same old Jim, a bit of a savage and just as primitive as ever."

"Thank you, Moira," I said. "I didn't expect it from you, but now I know what to look for."

"It is war then?" she said, with a little sparkle in her eyes.

"War it is," I answered; "as the Spaniards say, 'Guerra al cuchillo.'"

"Please translate," she requested. "I do not speak Spanish."

"War to the knife," I said briskly.

She half turned, then spoke to me over her shoulder. "I had hoped that we would be allies," she said softly, and was gone before I could ask her why.

As was only to be expected, things were very quiet during the next few days. Bryce went about his own affairs more openly than hitherto. With the passing of our midnight visitor all fear of attack seemed to have disappeared. He did not say as much to me, but in many little ways he showed that he was much easier in his mind. I found that I had next to nothing to do. He did not go out of his way now to find something to keep me occupied. As a matter of fact, I saw very little of him and practically nothing at all of Moira.

I spent most of my time thinking. I went over everything that had happened from the moment I sat down on the beach right down to the visit of that interesting and entertaining gentleman who had made his exit from the house in so unorthodox a manner. There was logic running right through the piece; every little incident seemed to dovetail into the others, yet, because I did not have the key, I could not read the riddle. Why did the man on the beach fire at Bryce? I could not say. Then just for amusement's sake I got a piece of paper and a pencil and dotted down the items that wanted explaining. They ran somehow like this:—

1. Why was Bryce shot at?

2. Why was he being watched?

3. What was the meaning of those figures I had seen?

4. Why was Bryce so anxious to avoid publicity?

5. Why did everybody seem satisfied when the burglar got away?

6. What was the burglar after, and why was he apparently satisfied even when he got the wrong figures?

7. What did the piece of driftwood have to do with it, and what connection was there between the wood and the typed figures?

And, lastly, what was it all about, anyhow?

Some of the items taken singly were quite susceptible of explanation, but I could not put forward any solution that covered them in toto. So eventually I gave it up, deciding that it wasn't my affair, and the less I worried myself about what didn't concern me, the better.

The tragedy, coming as it did like a bolt out of a clear sky, so upset everything that I really cannot say whether it was a week or ten days later that it happened. But I do remember, with that accuracy of detail that a man sometimes retains even when he is doubtful of essentials, the various events of that evening.

Immediately after tea Bryce rose from the table with the expressed intention of going to his study. I recall that he remarked to Moira as he passed her that everything was going along swimmingly, and that if he had no further word during the next couple of days he would consider that it was quite safe to try his luck. I didn't understand what he meant, though he seemed to be referring in a general way to the late burglary, if burglary it could be called. Moira was quite aware of the drift of his remarks, for she asked him wouldn't it be better to let the week elapse before he did anything.

"We've waited too long," he said. "We should have got to work long before. Too much time has been wasted already." Then he turned to me and said casually, "Drop in and see me later on, Jim. I'll be working till about ten."

I told him that I'd be along very shortly, and then I went hunting for a book to read. I found one at length, and I got so interested in it that I did not notice time passing. I was brought back to reality by a quick step in the passage, and I turned my head to view the newcomer. It was only Moira on her way to the study. She went by me with her head in the air, as if I did not exist. I recall taking out my watch and noting that it was just a quarter-past-nine, and high time I went in and saw Bryce. However, as Moira had got in ahead of me, and her business was probably of a private nature, I decided to wait until I heard her come out again.

I turned back to my book, but had scarcely found my place when I caught the tinkle of breaking glass on woodwork, and practically at the same instant there was a sharp "pop," as if someone had drawn a cork from a bottle of some gaseous liquid. On the heels of that had come the single whip-like crack of a revolver. I swung to my feet in an instant, and the book dropped unheeded to the floor. During the last few days I had got out of the habit of carrying my revolver, but for all that I made straight for the study, and without the slightest ceremony turned the handle. The door was not locked; it opened at my touch. I doubt if it was even latched.

If my long years of training in the hard school of experience have brought me nothing else, they at least taught me to keep my head in just such an emergency as this present one. It was well for me that I had my nerves under complete control, for the sight that faced me was one that I could not have pictured in even my wildest flights of fancy. Bryce was slumped forward in his chair, his big head sunk on his chest. All the color had fled from his face, leaving it ashen pale. The kind eyes that used to sparkle so were glazed now in death, and squinted up at me through the tangled mat of his eyebrows. The whiteness of his immaculate shirt-front was defiled for the first and last time by the big blood stain that showed how his life had ebbed away. But it was Moira most of all who caught and held my attention. She was standing just a little to the left of Bryce, her deep eyes wide with horror and a smoking revolver still held in her white clenched hand. She was staring at Bryce and the blood-stain on his shirt as if what she saw was too monstrous for belief.

"Moira Drummond," I said, in a hard, cold, emotionless voice that I hardly recognised as mine, "put down that thing instantly."

She turned her head at my words and regarded me dazedly for just the fraction of a second. Then in an instant the revolver dropped from her nerveless fingers and clattered to the floor, she swayed like a willow-wand in the wind, and would have fallen had I not sprung to catch her. She went limp in my arms. I did not need a second glance to tell me that Bryce was dead, and that no one in this world could do anything for him now. So, recognising that my first duty was to the living, I turned my attention to Moira. She had merely fainted, and one or two simple remedies brought her round very quickly. She opened her golden-brown eyes and looked up into mine. The unaccustomed horror of what she had just gone through had not yet died out of them; they held a plaintive, pleading look that somehow went straight to my heart.

"I didn't do it," she quavered.

"Who said you did?" I asked.

"The way you looked and spoke to me, Jim——"

I stopped her with a gesture. "That's all right," I said consolingly. "I wouldn't have thought so for a moment. But tell me just what happened."

"That's more than I can," she said. "I was standing by him, talking, and suddenly I heard the window glass smash and something went 'pop.' And the next I knew uncle gave a little cry and his head fell forward on his chest. The blood was welling up out of his wound, and I saw that he was killed. His revolver was on the table, so I seized it and fired at the window. I don't know whether I hit whoever fired, but I hope I did," she concluded, with the faintest touch of forgivable viciousness in her voice.

It was only when she drew my attention to it that I remembered having heard the glass break. The window had a great big star in the centre of it with a myriad little cracks radiating from it like the spokes of a wheel.

Moira looked first at the window, then at the still figure sitting in the chair. Finally she turned to me.

"Jim, what are we to do?" she asked helplessly.

"Well," I answered, seeing now that everything fell upon me, "we'll have to get hold of a doctor. It's just for form's sake, you understand. He won't be able to do anything. Then we'll have to ring up the police. It's a blessing we've got the 'phone on, as I wouldn't care to leave you by yourself now even for a moment. It's a wonder that none of the servants heard the noise."

"They're all out, Jim."

"That's lucky in one way," I said. "Now, Moira, I want you to understand that the safety of us both depends on how far you back me up. We can't touch your uncle until the police come; there'd be trouble if we did. I'm going to ring up now, and in the meantime you'd better find some of your uncle's cartridges."

"Why, Jim?"

"I'll tell you when I come back," I said. "Just do as I tell you. There should be some in the drawer of that table. Be careful how you get them out; you don't want to have to touch anything more than you can help. I'll leave the door open so I can see you from the 'phone. You won't be frightened?"

She shook her head, but her white face told me as plainly as so many words that the sooner I came back the better. Accordingly I wasted no further time, but turned on the hall light and took up the telephone-book. For a wonder I had no difficulty in getting connected with either the doctor or the police, and, once I had made my meaning plain, I hung up and returned to Moira.

"The police'll be here in ten minutes at the outside," I said. "I've got just that time to make you word-perfect. You've got the cartridges? Thanks. I only want one. Now listen. Your story's thin, it's so thin that there's many a detective wouldn't believe it; but I'm not going to give them a chance. I'm going to rig up things so that they'll look right. What happened is this:—You and I were out in the next room, reading if you like, when we heard a shot. We rushed in and found your uncle just as he is now. We've no idea who shot him, and neither you nor I fired a shot. When we find your uncle's revolver in the drawer with its seven chambers undischarged we're going to be just as much at sea as anybody else."

"But I did fire a shot," she objected. "How can you get away from that?"

"Easy. First of all I take out the discharged cylinder. Then I clean out the gun. I mustn't forget to clean it out, because if I do and people examine it, they'll see that it's been discharged, and they'll begin to suspect. We mustn't leave the least ground for suspicion. Now, there's the gun ready loaded in all its chambers and as clean as the day it came out of the shop. Back it goes into the drawer, and it stays there until the police find it. You understand just what you've to do now?"

"I think I do, Jim. But, oh, you've got to help me all you can!"

"I will that," I said in a sudden burst of cordiality. "I want you to feel that you can rely on me right through. And if there's any questions asked just let me do the answering, and if you're asked anything, why just say the same as I do. You can't say anything else because we were together all the night."

"But, Jim, I don't see why we should have to deceive people like this. Why is it necessary?"

"Have you ever heard of the thing called circumstantial evidence, Moira? You must remember that I heard a shot, and ran into the room just in time to see you standing over your uncle with a smoking revolver. I know what happened, but the police mightn't look at the matter in the same light. There's plenty of other ways of explaining that broken window."

"I suppose you know what's best," she said with a tired little sigh. "But it all does seem so horrible. I wish I hadn't to lie so."

"There's worse things than lying," I hinted. "It's a case of choosing the lesser of two evils, and really, Moira, I think in his own peculiar way your uncle trusted me."

She nodded as if she could not trust herself to speak.

Then came the sound of heavy footsteps on the verandah, and the door-bell rang violently.

"That's the police, very likely," I said in a quick whisper. "Just keep your head and leave the rest to me."

She said no word, but the pressure of her hand on mine told me more than hours of speech.