“Well, well, it was worth thinking over. Then there is another obvious point. The note was sent to William. The man who wrote it could not have taken it; otherwise, of course, he might have delivered his own message by word of mouth. Who brought the note, then? Or did it come through the post?”

“I have made inquiries,” said the Inspector. “William received a letter by the afternoon post yesterday. The envelope was destroyed by him.”

“Excellent!” cried Holmes, clapping the Inspector on the back. “You’ve seen the postman. It is a pleasure to work with you. Well, here is the lodge, and if you will come up, Colonel, I will show you the scene of the crime.”