The Middle Temple Murder by J.S. Fletcher

Spargo found Rathbury sitting alone in a small, somewhat dismal apartment which was chiefly remarkable for the business-like paucity of its furnishings and its indefinable air of secrecy. There was a plain writing-table and a hard chair or two; a map of London, much discoloured, on the wall; a few faded photographs of eminent bands in the world of crime, and a similar number of well-thumbed books of reference. The detective himself, when Spargo was shown in to him, was seated at the table, chewing an unlighted cigar, and engaged in the apparently aimless task of drawing hieroglyphics on scraps of paper. He looked up as the journalist entered, and held out his hand.

"Well, I congratulate you on what you stuck in the _Watchman_ this morning," he said. "Made extra good reading, I thought. They did right to let you tackle that job. Going straight through with it now, I suppose, Mr. Spargo?"