“If we have any chance of tracing the person who has written this,” I said, returning the letter to Miss Halcombe, “there can be no harm in seizing our opportunity the moment it offers. I think we ought to speak to the gardener again about the elderly woman who gave him the letter, and then to continue our inquiries in the village. But first let me ask a question. You mentioned just now the alternative of consulting Mr. Fairlie’s legal adviser tomorrow. Is there no possibility of communicating with him earlier? Why not today?”

“I can only explain,” replied Miss Halcombe, “by entering into certain particulars, connected with my sister’s marriage-engagement, which I did not think it necessary or desirable to mention to you this morning. One of Sir Percival Glyde’s objects in coming here on Monday, is to fix the period of his marriage, which has hitherto been left quite unsettled. He is anxious that the event should take place before the end of the year.”

“Does Miss Fairlie know of that wish?” I asked eagerly.