The telephone rang at last. I picked it up and listened. Then I said, “Okay,” and turned to Nicky. “One of them tried to escape through the kitchen, but Winn had someone stationed at the back and they got him.”
“That would seem to prove it,” said Nicky With a frosty little smile.
I nodded agreement.
He glanced at his watch. “Gracious,” he exclaimed, “I wanted to make an early start on my work this morning, and here I’ve already wasted all this time talking with you!”
I let him get to the door. “Oh, Nicky,” I called, “what was it you set out to prove?”
“That a chain of inferences could be logical and still not be true,” he said.
“Oh.”
“What are you laughing at?” he asked snappishly, and then he laughed, too.