Chapter 21
It was apparent that quick action was necessary if the mystery was ever to be solved. Kennedy evidently thought so, too, for he did not wait even until he returned to his laboratory to set in motion, through our old friend, Commissioner O'Connor, the machinery that would result in warrants to compel the attendance at the laboratory of all those interested in the case. Then he called up Dr. Leslie and finally Dr. Blythe himself. Back again in the laboratory, Kennedy employed the time in developing some plates of the pictures he had taken, and by early evening, after a brief study of them, his manner indicated that he was ready. Dr. Leslie, whom he had asked to come a little before the rest, arrived early, and a few moments later Dr. Blythe, very much excited by the message he had received
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