I had called upon my friend, Mr Sherlock Holmes, one day in the autumn of last year and found him in deep conversation with a very stout, florid-faced, elderly gentleman with fiery red hair. With an apology for my intrusion, I was about to withdraw when Holmes pulled me abruptly into the room and closed the door behind me. "You could not possibly have come at a better time, my dear Watson," he said cordially. "I was afraid that you were engaged." "So I am. Very much so." "Then I can wait in the next room." "Your cases have indeed been of the greatest interest to me," I observed. eveloped." "'Never.'