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68 of Inspector Murch, who stood high in the councils of the Criminal Investigation Department. He was a quiet, tactful, and very shrewd officer, a man of great courage, with a vivid history in connection with the more dangerous class of criminals. His humanity was as broad as his frame, which was large even for a policeman. Trent and he, through some obscure working of sympathy, had appreciated one another from the beginning, and had formed one of those curious friendships with which it was the younger man's delight to adorn his experience. The inspector would talk more freely to him than to any one, under the rose, and they would discuss details and possibilities of every case, to their mutual enlightenment. There were necessarily rules and limits. It was understood between them that Trent made no journalistic use of any point that could only have come to him from an official source. Each of them, moreover, for the honour and prestige of the institution he represented, openly reserved the right to withhold from the other any discovery or inspiration that might come to him which he considered vital to the solution of the difficulty. Trent had insisted on carefully