"No, no," cried Holmes, shoving him back into the chair from which he had half risen. "I really wouldn't miss your case for the world. It is most refreshingly unusual. But there is, if you will excuse my saying so, something just a little funny about it. Pray what steps did you take when you found the card upon the door?"
"I was staggered, sir. I did not know what to do. Then I called at the offices round, but none of them seemed to know anything about it. Finally, I went to the landlord, who is an accountant living on the ground floor, and I asked him if he could tell me what had become of the Red-headed League. He said that he had never heard of any such body. Then I asked him who Mr. Duncan Ross was. He answered that the name was new to him.
"'Well,' said I, 'the gentleman at No. 4,'
"'What, the red-headed man?'
"'Yes.'
"'Oh,' said he, 'his name was William Morris. He was a solicitor, and was using my room as a temporary convenience until his new premises were ready. He moved out yesterday.'
"'Where could I find him?'
"'Oh, at big new offices. He did tell me the address. Yes, 17 King Edward Street, near St. Paul's.'
"I started off, Mr. Holmes, but when I got to that address it was a manufactory of artificial knee-caps, and no one in it had ever heard of either Mr. William Morris or Mr. Duncan Ross.'
"And what did you do then?" asked Holmes.