"You and Mr. Dill and Mr. Goodwin left me there," Wolfe said. "Standing there alone. He left those plants there on the floor-and by the way, I have better hassellis than those, much better, my own growing. At a certain point my head began to work, which was remarkable under the circumstances. I don't say that I foresaw this moment precisely, but I saw enough to impel me to go to the corridor and find this piece of string on the floor and pick it up. It is indubitably the piece that was looped on the crook of your cane. By comparing it with the piece left attached to the trigger, Mr. Cramer can establish our surmise as a certainty. That is, he can if I let him have it. Do you think I should do that?"
"Good heavens," Hewitt muttered. "My stick. Good heavens, do you realize-my stick!"
"Exactly," Wolfe agreed. "Don't talk so loud. I do realize. Whoever rigged up that affair made a loop at the end of the string that could be passed under the door. It may have been an afterthought, ad libbing, suggested by the sight of your cane where you had left it, to pass the loop over the cane and leave it lying there for the first passer-by to pick up. If that hadn't happened before half past four I imagine he would have attended to it himself. I do realize what a story that will be for the newspapers. I doubt if it would lead to any official suspicion that you rigged it up yourself, but the public mind-at least some of it-is even less subtle than Mr. Crammer's."
"Good heavens," Hewitt moaned. "This…" He clenched his fingers, and released them, and clenched them again. "This is horrible."
"Oh, I wouldn't say horrible. Disagreeable."
"Horrible. For me. For a Hewitt. Horrible!"
"Perhaps for a Hewitt," Wolfe conceded. "Then all the more reason why this may interest you. I want those orchid plants. All three of them."
That changed things entirely. The change, showing itself on Hewitt's face, took perhaps two seconds all told. Up to then nothing had been threatened but his peace of mind or maybe his reputation, at most his life and liberty. But this was something else again; this threatened his property. It put stone in his heart and steel in his jaw. He eyed Wolfe with a shrewd and stubborn stare.
"I see," he hissed. "So that's it. To put it plainly, blackmail. Blackmail! No! I won't do it!"
Wolfe sighed. "You won't?"
"No!"