CHAPTER XLV. DR. PETERSSEN IS TRACKED

The name of the visitor I expected, and who hopped up the stairs which led to my chambers half an hour after I entered them, was Bob Tucker. He is a friend of mine, with plenty of money at command, and has no need to work for a living; but he has a fad, if I may so express it. This fad lay in the detective line, and to give him a job in that direct