I was white with dust and wet through with sweat. The girl looked me over and said:

"I have orders to telephone for him if he is wanted."

"He is," I replied, and she went off to the telephone at once.

I began to cool down in more ways than one while I waited. It seemed to me very likely that I had come upon a fool's errand. After all, what had I got to go upon but a German accent, a low, sharp whistle, and an electric torch? I waited about half an hour before Bowyer came in. He was a big man, with a strong face and a fair moustache, capable, but not imaginative; and I began my story with a good deal of diffidence. But I had not got far before his face became serious, though he said not a word until I had done.

"Bradley Rymer's house," he then remarked. "I know it." He went out into the passage, and I heard his voice at the telephone. He came back in a moment.

"I have sent for some men," he said, "and a car. Will you wait here while I change?"

"Yes."

I glanced at the clock. For now that he took the affair seriously all my fears had returned.

"What time did you leave the house?" he asked.

"Nine."