At that point I gave up entirely. I went to the office, to the phone on my desk, buzzed the plant rooms, and told Wolfe what had happened. Then, still following instructions, I retired to the kitchen. I wasn’t supposed to show up in the office until after they had come down from the plant rooms. Why? As far as I knew, because. Evidently they were in no hurry. I had finished two bananas and a glass of milk before I heard the elevator complaining. After hearing their voices in the hall I gave them time to get in the office and solve the seating problem. Then I joined them.
It didn’t strike me as an atmosphere of jollity, as I circled around their chairs to reach mine at my desk. I would have been perfectly willing to salute my superior officers, but their attitudes didn’t seem to call for it. None of them was in handcuffs or even had his insignia ripped off, so as far as I could see the booby trap was a turkey. The closest chair to mine was Shattuck’s, and beyond him was Tinkham. Fife was in the big one at the other end of Wolfe’s desk. Lawson was to his right and back of him.
Wolfe, having got himself comfortably adjusted, sighed clear to the bottom. “Now,” he said in a tone of satisfaction, “we can proceed. I thank you gentlemen again for your patience. I hope you’ll agree with me, when I’ve explained, that it was worth it. It was the only way that occurred to me of learning whether one of you murdered Colonel Ryder, or Miss Bruce did.”
“Murder?” Fife was scowling at him. “Goodwin told me you didn’t know—”
“If you please, General.” Wolfe was curt. “This will take all day if you start heckling. What Major Goodwin told you, and Colonel Tinkham and Lieutenant Lawson, was that I wanted to see you at my office, privately, that I was still undecided as to the manner of Colonel Ryder’s death, that I had learned that Miss Bruce was involved on account of a report being prepared by Colonel Ryder which would have meant her ruin, and that I had received a sealed communication from Colonel Ryder, mailed yesterday, which I wished to open in your presence.”
“But now you say—”
“General. Please.” Wolfe’s eyes swept the circle. “I can now tell you that I devised an experiment. I arranged for you to arrive here at fifteen-minute intervals, and to be left alone in this office. On the desk where you couldn’t fail to see it was an envelope addressed to me, with Colonel Ryder’s return address, his home address, and the inscription, To be opened at six p.m. Tuesday, August 10th, if no word has been received from me. Incidentally, that envelope was a fake. I had it prepared and mailed last evening.”
“I wondered about that,” Colonel Tinkham said dryly. “It was postmarked eleven p.m. Ryder had been dead seven hours.”
“Irrelevant,” Wolfe snapped. “That could have been accounted for in a dozen ways. On the envelope I placed a grenade like the one that killed Colonel Ryder. I asked General Carpenter for it on the phone last evening, and he sent it by messenger on a plane. The experiment was to leave each of you in here alone for ten minutes, with those objects on the desk, and see what would happen. After each of you left, Fritz came in to inspect — especially to learn if the envelope had been tampered with. That may seem a little crude. But consider, consider the state of mind of the murderer. Could he stay in here alone for ten minutes, with that envelope staring him in the face, and do nothing about it? Make no effort whatever to learn what was in it? Impossible. Absolutely impossible!”
Fife snorted. “I never saw the damn thing. I don’t see it now.” He was regarding Wolfe as anything but a valued associate. “And you had the gall, by God, to put me on your list!”