But after a quarter to two he had vanished. Up to that hour witnesses were multitudinous. Dozens of people had seen him, fled from him or pursued him, and then things suddenly came to an end. At a quarter to two he had been seen running down the Euston Road towards Baker Street, flourishing a can of burning colza oil and jerking splashes of flame therefrom at the windows of the houses he passed. But none of the policemen on Euston Road beyond the Waxwork Exhibition, nor any of those in the side streets down which he must have passed had he left the Euston Road, had seen anything of him. Abruptly he disappeared. Nothing of his subsequent doings came to light in spite of the keenest inquiry. Here was a fresh astonishment for Mr. Vincey. He had found considerable comfort in Mr. Hart's conviction: "He is bound to be laid by the heels before long," and in that assurance he had been able to suspend his mental perplexities. But any fresh development seemed destined to add new impossibilities to a pile already heaped beyond the powers of his acceptance. He found himself doubting whether his memory might not have played him some grotesque trick, debating whether any of these things could possibly have happened; and in the afternoon he hunted up Mr. Hart again to share the intolerable weight on his mind. He found Mr. Hart engaged with a well-known private detective, but as that gentleman accomplished nothing in this case, we need not enlarge upon his proceedings. All that day Mr. Bessel's whereabouts eluded an unceasingly active inquiry, and all that night. And all that day there was a persuasion in the back of Mr. Vincey's mind that Mr. Bessel sought his attention, and all through the night Mr. Bessel with a tear-stained face of anguish pursued him through his dreams. And whenever he saw Mr. Bessel in his dreams he also saw a number of other faces, vague but malignant, that seemed to be pursuing Mr. Bessel. It was on the following day, Sunday, that Mr. Vincey recalled certain remarkable stories of Mrs. Bullock, the medium, who was then attracting attention for the first time in London. He determined to consult her. She was staying at the house of that well-known inquirer, Dr. Wilson Paget, and Mr. Vincey, although he had never met that gentleman before, repaired to him forthwith with the intention of invoking her help. But scarcely had he mentioned the name of Bessel when Doctor Paget interrupted him. "Last night--just at the end," he said, "we had a communication." He left the room, and returned with a slate on which were certain words written in a handwriting, shaky indeed, but indisputably the handwriting of Mr. Bessel! "How did you get this?" said Mr. Vincey. "Do you mean--?"