“Interested, Mister Mac, but hardly surprised. Why should I be surprised? I receive an anonymous communication from a quarter which I know to be important, warning me that danger threatens a certain person. Within an hour I learn that this danger has actually materialized and that the person is dead. I am interested; but, as you observe, I am not surprised.”
In a few short sentences he explained to the Inspector the facts about the letter and the cipher. MacDonald sat with his chin on his hands and his great sandy eyebrows bunched into a yellow tangle.
“I was going down to Birlstone this morning,” said he. “I had come to ask you if you cared to come with me—you and your friend here. But from what you say we might perhaps be doing better work in London.”
“I rather think not,” said Holmes.
“Hang it all, Mr. Holmes!” cried the Inspector. “The papers will be full of the Birlstone mystery in a day or two; but where’s the mystery if there is a man in London who prophesied the crime before ever it occurred? We have only
