TOBIAS GREGSON SHOWS WHAT HE CAN DO. The papers next day were full of the “Brixton Mystery,” as they termed it. Each had a long account of the affair, and some had leaders upon it in addition. There was some information in them which was new to me. I still retain in my scrap-book numerous clippings and extracts bearing upon the case. Here is a condensation of a few of them:— The _Daily Telegraph_ remarked that in the history of crime there had seldom been a tragedy which presented stranger features. The German name…