Wolfe nodded. "I imagine you will. I wouldn't be surprised if Gould even got a written confession from Pete Arango that you had bribed him to infect the rhodalea plantation, by threatening to inform Mr. Updegraff that he had been at Salamanca, not far away, in your company. At least he got something that served well enough to put the screws on you. You paid him something around five thousand dollars. Did he turn the confession over to you? I suppose so. And then-may I hazard a guess?"
"I think," Hewitt said evenly, "you've done too much guessing already."
"I'll try one more. Gould saw Pete Arango at the Flower Show, and the temptation was too much for him. He threatened him again, and made him sign another confession, and armed with that made another demand on you. What this time? Ten thousand? Twenty? Or he may even have got delusions of grandeur and gone to six figures. Anyhow, you saw that it couldn't go on. As long as ink and paper lasted for Pete Arango to write confessions with, you were hooked. So you-by the way, Mr. Updegraff, he's up there at your exhibit, isn't he, and available? Pete Arango? We'll want him when Mr. Nelson arrives."
"You're damn right he's available," Fred said grimly.
"Good."
Wolfe's head pivoted back to Hewitt. He paused, and the silence was heavy on us. He was timing his climax, and just to make it good he decorated it.
"I suppose," he said to Hewitt in a tone of doom, "you are familiar with the tradition of the drama? The three traditional knocks to herald the tragedy?"
He lifted the osmundine fork and brought it down again, thumping the floor with it, once, twice, thrice.
Hewitt gazed at him with a sarcastic smile, and it was a pretty good job with the smile.
"So," Wolfe said, "you were compelled to act, and you did so promptly and effectively. And skillfully, because, for instance, Mr. Cramer has apparently been unable to trace the revolver, and no man in the world is better at that sort of thing. As Honorary Chairman of the Committee, naturally you had the run of the exhibit floors at any hour of the day; I suppose you chose the morning, before the doors were opened to the public, to arrange that primitive apparatus. I don't pretend to be inside of your mind, so I don't know when or why you decided to use your own cane as the homicide bait for some unsuspecting passer-by. On the theory that-"
The door opened and Theodore Horstmann was on the threshold.