The third find was that in an engagement book or diary there was a reference to the visit to London, and to certain calls to be paid there. On the space for the Thursday before the murder was written ‘London, 10.25 train, Judd’s Hotel, Dunlop Street.’ On the next space, for Friday, was an entry, ‘Insurance Co., 77B Gracechurch St.’ There was a list of articles—probably purchases—‘Collars, handkerchiefs, _The Apiarist_, by S. Wilson Holmes,’ and some other items. Last, but not least, for the evening of the murder there was ‘X—9.30 p.m.’ This last entry set Tanner puzzling. ‘X,’ he presumed, stood for the Luce Manor boathouse, and its use seemed to show the same desire for secrecy about his visit there as had been noticeable with the others who had been present. But Tanner had to confess that this entry did not square with the theory that the murder had been its object—at least on Douglas’s part. It was inconceivable that a man about to commit such a crime should have required a reminder of the hour of the deed. Every detail of the plan would have been seared into his brain. Was the suggestion of this entry, wondered the Inspector, not that Douglas had been made a tool of by the cousins? If the man should make that case this would certainly be corroborative evidence. Tanner attached some weight to the point, as he felt it was too subtle to have been designed. Having seen from the papers that Douglas had an account in the Plymouth branch of the Western Counties Bank, Tanner next day called on the manager. Here, after a study of the accused’s finances, he made an interesting discovery. At intervals during the last four years Douglas had lodged sums of money—invariably in notes, so he was told—and what particularly intrigued the Inspector’s imagination was the fact that each such lodgment had taken place a few days after the drawing of an ‘X’ cheque by Sir William Ponson, and in each case it was for just a trifle less than the amount of that cheque. It seemed evident that Sir William had been paying Douglas these sums, and the method of lodging showed the latter equally eager to keep the transactions secret. What service, mused Tanner, could Douglas have possibly done Sir William to have merited such a return? It was an anxious and disappointed Inspector who that afternoon stepped into the London train at Millbay Station, Plymouth. He had been hoping for great things from his search of Douglas’s rooms, and he had found practically nothing—only an old photograph and the address of an insurance company in London. And neither of these seemed the slightest use. Could anything be learned by tracing that tombstone or calling at that insurance office? He did not think so.