His face grew grave.
“Well, since you ask me, I must admit that I do. It is possible that the milkman did not betray himself. It is even possible that I was wrong about him.”
“Then come along with you,” I said, with a certain amicable anger, “and remember that you owe me half a crown.”
“As to that, I differ from you,” said Rupert coolly. “The milkman's remarks may have been quite innocent. Even the milkman may have been. But I do not owe you half a crown. For the terms of the bet were, I think, as follows, as I propounded them, that wherever that milkman came to a real stop I should find out something curious.”
“Well?” I said.
“Well,” he answered, “I jolly well have. You just come with me,” and before I could speak he had turned tail once more and whisked through the blue dark into the moat or basement of the house. I followed almost before I made any decision.
When we got down into the area I felt indescribably foolish literally, as the saying is, in a hole. There was nothing but a closed door, shuttered windows, the steps down which we had come, the ridiculous well in which I found myself, and the ridiculous man who had brought me there, and who stood there with dancing eyes. I was just about to turn back when Rupert caught me by the elbow.
“Just listen to that,” he said, and keeping my coat gripped in his right hand, he rapped with the knuckles of his left on the shutters of the basement window. His air was so definite that I paused and even inclined my head for a moment towards it. From inside was coming the murmur of an unmistakable human voice.
“Have you been talking to somebody inside?” I asked suddenly, turning to Rupert.
“No, I haven't,” he replied, with a grim smile, “but I should very much like to. Do you know what somebody is saying in there?”