He looked at our cards. “Pray sit down, gentlemen. What can I do for you?”
Mr. Holmes smiled amiably.
“It was the question which I was about to put to you, Professor.”
“To me, sir!”
“Possibly there is some mistake. I heard through a second person that Professor Presbury of Camford had need of my services.”
“Oh, indeed!” It seemed to me that there was a malicious sparkle in the intense grey eyes. “You heard that, did you? May I ask the name of your informant?”
“I am sorry, Professor, but the matter was rather confidential. If I have made a mistake there is no harm done. I can only express my regret.”
“Not at all. I should wish to go further into this matter. It interests me. Have you any scrap of writing, any letter or telegram, to bear out your assertion?”
“No, I have not.”
“I pre
