In a small and lonely house, tenanted by Longcluse, in the then less crowded region of Richmond, were found proofs, no longer needed, of Longcluse's identity, both with the horseman who had met Paul Davies on Hampstead Heath, and the person who crossed the Channel from Southampton with David Arden, and afterwards met him in the streets of Paris, as we have seen. There he had been watching his movements, and traced him, with dreadful suspicion, to the house of Vanboeren. The turn of a die had determined the fate of David Arden that night. Longcluse had afterwards watched and seized an opportunity of entering Vanboeren's house. He knew that the baron expected the return of his messenger, rang the bell, and was admitted. The old servant had gone to her bed, and was far away in that vast house. Longcluse would have stabbed him, but the baron recognised him, and sprang back with a yell. Instantly Longcluse had used his revolver; but before he could make assurance doubly sure, his quick ear detected a step outside. He then made his exit through a window into a deserted lane at the side of the house, and had not lost a moment in commencing his flight for London. With respect to the murder of Lebas, the letter of Longcluse pretty nearly explains it. That unlucky Frenchman had attended him through his recovery under the hands of Vanboeren; and Longcluse feared to trust, as it now might turn out, his life, in his giddy keeping. Of course, Lebas had no idea of the nature of his crime, or that in England was the scene of its perpetration. Longcluse had made up his mind promptly on the night of the billiard-match played in the Saloon Tavern. When every eye was fixed upon the balls, he and Lebas met, as they had ultimately agreed, in the smoking-room. A momentary meeting it was to have been. The dagger which he placed in his keeping, Longcluse plunged into his heart. In the stream of blood that instantaneously flowed from the wound Longcluse stepped, and made one distinct impression of his boot-sole on the boards. A tracing of this Paul Davies had made, and had got the signatures of two or three respectable Londoners before the room filled, attesting its accuracy, he affecting, while he did so, to be a member of the detective police, from which body, for a piece of _over_-cleverness, he had been only a few weeks before dismissed. Having made his tracing, he obscured the blood-mark on the floor. The opportunity of distinguishing himself at his old craft, to the prejudice of the force, whom he would have liked to mortify, while earning, perhaps, his own restoration, was his first object. The delicacy of the shape of the boot struck him next. He then remembered having seen Longcluse--and his was the only eye that observed him--pass swiftly from the passage leading to the smoking-room at the beginning of the game. His mind had now matter to work upon; and hence his visit to Bolton Street to secure possession of the boot, which he did by an audacious _ruse_.