Holmes thought for a minute. 'Hmm,' he said.'That is a difficult question. But please go on.''That was two years ago,' Helen Stoner said. 'I havebeen very lonely without my sister, but a month ago adear friend asked me to marry him. My stepfather hasagreed, and so we're going to marry soon. But twodays ago I had to move to my sister's old bedroom,because some men are mending my bedroom wall, andlast night I heard that whistle again! I ran out of thehouse immediately and came to London to ask foryour help. Please help me, Mr Holmes! I don't want todie like Julia!''We must move fast,' said Holmes. 'If we go to yourhouse today, can we look at these rooms? But yourstepfather must not know.''He's in London today, so he won't see you. Ohthank you, Mr Holmes, I feel better already.'