"It was a logical theory enough, but here came the evidence of the hat. The man who walked away from Fulton Gardens at nine o'clock, whom the point policeman saw changing his hat in the street at that hour, could not possibly have gone all the way to Walthamstow, either by bus or even part of the way in a taxi, and back again to Piccadilly Circus all in the space of forty-five minutes. And Leighton, mind you, stepped out of a bus when his friend met him, and I can tell you that the police worked their hardest to find a taxi-man who may have picked up a fare that night in the neighbourhood of Clerkenwell and driven out to Walthamstow and then back to Holborn. That search proved entirely fruitless. On the other hand, Leighton had paid his bus fare from Holborn, and the conductor vaguely recollected that he had got in at the corner of Clerkenwell Road. Well, that being proved, the man couldn't have done in the time all that the prosecution declared that he did. "After he was discharged, the Press started violently abusing the police for not having directed their attention to the second visitor who called at Fulton Gardens ten minutes or so after the first one had left. But this person appeared as elusive and intangible as the mysterious wearer of Mr. Jessup's hat and coat. The point policeman saw him in the distance, and Ann Weber admitted him into the house and chatted with him for over twenty minutes. She didn't know him, but she declared that she could easily recognise him if she saw him again. For some time after that the poor girl was constantly called upon by the police to see, and if possible identify, the mysterious visitor. Half the shady characters in London passed, I believe, before her eyes during the next three months. But this search proved as fruitless as the other. The murder of Mr. Seton Jessup has remained as complete and as baffling a mystery as any in the annals of crime. Many there are--you amongst the number--who firmly believe that Arthur Leighton had, at any rate, something to do with it. I know that the family of the deceased were convinced that he did. Mr. Aubrey Jessup, the eldest son of the deceased, who was one of the executors under his father's will, and who had gone through the accounts of the business, had noted certain irregularities in Leighton's books; he also declared that various sums which had come in on the sixteenth after banking hours were missing from the safe. Moreover, young Leighton himself had admitted that 'the guv'nor was waxy with him because a few pounds were missing from the till.' All these facts no doubt had influenced the police when they applied for a warrant for his arrest, but there was no getting away from the evidence of that hat and coat found ten miles and more away from the scene of the crime, and of the bus conductor who could swear that out of forty-five minutes which the accused had to account for he had spent twenty in a bus."