Doubtless you will have gathered my motive? It would have been criminal to let Rolston, or any one else, have a share in this last adventure. To put it in plain English, I determined, at whatever risk to myself, to kill Mark Antony Midwinter. There was nothing else for it. The law could not be invoked. While he lived, my girl's life would be in terrible danger. The man had to be destroyed, as one would destroy a mad dog, and it was my duty, and mine alone, to destroy him. If I came off worst in the encounter, well, Morse still had skilled defenders. The risk, I knew, was considerable, but it seemed that I held the winning cards, for within two hours Midwinter would step into a trap. When I had killed him I had my own plans as to the disposal of the body. It was arranged that a considerable number of Chinese servants from the City should arrive at eleven. If I knew those bland, yellow ruffians, it would not be a difficult thing to dispose of Midwinter's remains, either on the spot or by conveyal to Richmond. Another alternative was that I should shoot him in self-defense, as an ordinary burglar. Certainly the law would come in here, but it would be justifiable homicide and be merely a three days' sensation. I had to catch my hare first--the method of cooking it could be left till afterwards. In a drawer in my writing-table were letters to various people, including my solicitor and my two friends, Pat Moore and Arthur Winstanley. There was a long one, also, to Juanita. Everything was arranged and in order. I am not aware that I felt any fear or any particular emotion, save one of deep, abiding purpose. Nothing would now have turned me from what I proposed to do. I had spent long thought over it and I was perfectly convinced that it was an act of justice, irregular, dangerous to myself, but morally defendable by every canon of equity and right. The man was a murderer over and over again. To-night he would receive the honor of a private execution. That was all. When I left my chambers, with an automatic pistol, a case of sandwiches, and a flask of whisky-and-water, the rain was descending in a torrent. The street was empty and dismal, and Berkeley Square itself a desert. I don't think I saw a single person, except one police-constable in oilskins sheltering under an archway, till I arrived at Birmingham House. The well-known facade of the mansion was blank and cheerless. All the blinds were down; there was not a sign of occupation. I rang, the door opened immediately, and I slipped in.