"Still, as I daresay you know, judges look very much askance at anonymous letters, and especially in a trial for murder. Also these prove so _very_ little--the more so that there seems to have been no talk at all about Tropenell and Mrs. Pavely in the neighbourhood. She bears, and has always borne, a very high character. As for these letters, they were evidently written by a woman--and by an educated woman. Any one familiar with disguised handwriting could tell you _that_ much. Of course I have my own theory as to who wrote them." Lord St. Amant nodded. "Yes, so have I." "Still, I'm not bound to give my theory to either side, am I? I foresee that very probably these letters will remain anonymous. A great many people who think themselves clever will put them down to some dismissed servant. "The fact that Mr. Tropenell left England for Mexico so soon after the discovery of Mr. Pavely's body is a good point on his side. The judge will argue, above all the jury will argue, that if he had been in love with Mrs. Pavely--if he had loved her, that is, with a guilty passion--he would not have left her just after she had become a widow. Nothing compelled him to do so. It has been suggested, but from a person who does not intend to go into the witness-box if she can help it, that Tropenell and Mrs. Pavely are now secretly engaged. My answer to that is--why shouldn't they be? Many a man has married his best friend's widow without any one supposing that he committed murder in order to attain that satisfaction!" "Have you proof--irrefutable proof--pointing to the guilt of Oliver Tropenell?" "What is irrefutable proof? It can be proved that Oliver Tropenell spent many weeks on the Continent in the company of the man who undoubtedly masqueraded as Fernando Apra, and that for a certain portion of that time the two men exchanged identities. Nothing can shake that portion of the evidence. But there is no record of the two having met, later, in London--I mean during the time when the net was certainly being drawn round Godfrey Pavely. And, as I said before, Gilbert Baynton--_alias_ Fernando Apra--has an absolute alibi. He was certainly in Paris on the day when all trace of Pavely was lost. There seems no doubt at all that the evidence of the London hotel manager was most artfully arranged for. The man's story was given in good faith, but the incident occurred a full week before Mr. Pavely was done to death." "But where does Tropenell come in?"