My friend turned to the country inspector.

“I suppose that you have no objection to my collaborating with you, Mr. Baynes?”

“Highly honoured, sir, I am sure.”

“You appear to have been very prompt and businesslike in all that you have done. Was there any clue, may I ask, as to the exact hour that the man met his death?”

“He had been there since one o’clock. There was rain about that time, and his death had certainly been before the rain.”

“But that is perfectly impossible, Mr. Baynes,” cried our client. “His voice is unmistakable. I could swear to it that it was he who addressed me in my bedroom at that very hour.”

“Remarkable, but by no means impossible,” said Holmes, smiling.

“You have a clue?” asked Gregson.

“On the face of it the case is not a very complex one, though it certainly presents some novel and interesting features. A further knowledge of facts is necessary before I would venture to give a final and definite opinion. By the way, Mr. Baynes, did you find anything remarkable besides this note in your examination of the house?”

The detective looked at my friend in a singular way.