“ ‘Where could I find him?’

“ ‘Oh, at his 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 kneecaps, 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.