"As for me, I was stumped. You had licked me. With all trace of the bull gone but his bones, there seemed no possible way of establishing your motive for murdering Clyde. I had no evidence even for my own satisfaction that my surmise had been correct-that the bull was not Caesar. Tuesday eve- ning I floundered in futilities. I had an interview with you and tried to draw you out by suggesting absurdities, but you were too wary for me. You upbraided me for trying to smear some of the mess on you, and left. Then I tried Bronson, hoping for something-anything. That kind of man is always impervious unless he can be confronted with facts, and I had no facts. It's true that he led me to assumptions: that Clyde had told him how and why he expected to win the bet, and that Bron- son therefore knew you were guilty-might even have been there himself, in the dark-and that he was blackmailing you. I assumed those things, but he admitted none of them, and of course I couldn't prove them.
"Yesterday morning I went for Bennett. I wanted to find out all I could about identifying bulls. He was busy. Mr. Goodwin couldn't get him. After lunch I was still waiting for him. Finally he came, and I got a great deal of information, but nothing that would constitute evidence. Then came the news that Bronson had been murdered. Naturally that was obvious. Suspecting that he was blackmailing you, I had told the man he was a fool and he had proved me correct. There too you acted promptly and energetically. Men like you, sir, when once calamity sufficiently disturbs their balance, be- come excessively dangerous. They will perform any desperate and violent deed, but they don't lose their heads. I wouldn't mind if Mr. Goodwin left me with you in this room alone, be- cause it is known that we are here; but I wouldn't care to offer you the smallest opportunity if there were the slightest room for your ingenuity."
McMillan lifted his head and broke his long silence. "I'm through," he said dully.