"Well, Mrs. Warren, I cannot see that you have any particular cause for uneasiness, nor do I understand why I, whose time is of some value, should interfere in the matter. I really have other things to engage me." So spoke Sherlock Holmes and turned back to the great scrapbook in which he was arranging and indexing some of his recent material. But the landlady had the pertinacity and also the cunning of her sex. She held her ground firmly. "You arranged an affair for a lodger of mine last year," she said--"Mr. Fairdale Hobbs." "Ah, yes--a simple matter." "But he would never cease talking of it--your kindness, sir, and the way in which you brought light into the darkness. I remembered his words when I was in doubt and darkness myself. I know you could if you only would."