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 neighbourhood for footprints like those in the avenue; and, if you find any, search the bottom of the water thoroughly, for he is quite likely to have dropped the knife into the mud."

The photographs, which we handed in at Scotland Yard that same night, enabled the experts to identify the finger-prints as those of Francis Dobbs, an escaped convict. The two photographs—profile and full-face—which were attached to his record, were sent down to Baysford with a description of the man, and were, in due course, identified with a somewhat mysterious individual, who passed by the name of Rufus Pembury and who had lived in the neighbourhood as a private gentleman for some two years. But Rufus Pembury was not to be found either at his genteel house or elsewhere. All that was known was, that on the day after the murder, he had converted his entire "personalty" into "bearer securities," and then vanished from mortal ken. Nor has he ever been heard of to this day.

"And, between ourselves," said Thorndyke, when we were discussing the case some time after, "he deserved to escape. It was clearly a case of blackmail, and to kill a blackmailer—when you have no other defence against him—is hardly murder. As to Ellis, he could never have been convicted, and Dobbs, or Pembury, must have