The tramp turned and looked back. "So!" muttered the tramp, with the air of a man who would have been astonished then, but for the fact that he never allowed anything to astonish him. "So he is mixing himself up in this affair! I wonder in what capacity? Can it be that by some means he has been selected to work up this case? Oh! oh! Bless my soul! What a coincidence that would be!" Evidently he had grasped at a new idea, and one that was somewhat startling. He quickened his pace until, unconsciously, it became almost a trot. The mask of studied vacancy dropped from his face, leaving it alert, keen, analytical. His mind had grasped at a problem, and he was studying it with knitted brow and compressed mouth, as he hurried on countryward, not heeding anything save the thought which possesse

