The next morning French occupied in making the acquaintance of the obvious dramatis personæ in the case. He paid a long visit to Ruth Averill, hearing her story at first hand and questioning her on various details which occurred to him. Oxley he saw at his office and the lugubrious Abel Hesketh, the town officer, he found at the toll room in the markets. He was waiting for Dr. Emerson as the latter concluded his morning round, and he went to the trouble of an excursion over the moor to interview the red-haired farmer, George Mellowes, who had driven Roper home on the fatal night. Dr. Philpot he also called on, to obtain his impressions of the Starvel household.

Lastly, he saw the bank clerk, Bloxham, who struck him at once as a man of character. Though seemingly not more than thirty, he had a strangely old face, sardonic and determined looking, almost sinister. He gave his testimony with a refreshing restraint of words, and seemed to have observed carefully and to know just what he had seen. He said that on three occasions when he was at Starvel Mr. Averill had opened his safe and he had had a glimpse of its contents. From the size of the stacks of notes he would estimate that these contained possibly 1500 separate notes. If these were twenties that would mean £30,000. There was also a cardboard box of sovereigns. If he had not heard the number he would have estimated that it contained about two thousand.

To all of these people, except Oxley, who already knew the truth, French accounted for himself by the story of the detective employed to ascertain the cause of an unexplained fire. All seemed anxious to help him, but unfortunately none could tell him anything more than he already knew.

Having thus completed the obvious local inquiries, he felt free to follow up the matter of the £20 note. He therefore left Thirsby by the afternoon train and late that night reached St. Pancras. Next morning saw him at the headquarters of the Northern Shires Bank in Throgmorton Avenue. In five minutes he was closeted with the manager, who shook his head when he heard what was required of him.

“I naturally imagined some such question might arise,” the manager said, “and I questioned the clerk who had received the note. At first he was unable to give me even the slightest hint, but on thinking over the matter he said the balance of probability was in favour of its having been paid in by the messenger from Cook’s office in Regent Street. He explained that in Cook’s deposit, which was an unusually heavy one, there were no less than seventeen notes for twenty pounds, and he remarked to the messenger: ‘You’re strong in twenties to-day.’ It was shortly afterwards that the clerk discovered he held one of the numbers sent in by Mr. Tarkington. He had twenty-two twenties in hand when he made his discovery and he believed he had not parted with any since the Cook lodgment, therefore, the chances that the note came from Cook’s are as seventeen to five.”

“There is no certainty about that,” said French.

“No certainty, but a good sporting chance,” the manager returned with a smile as he bade his visitor good day.

The next step was obviously Cook’s office. Here again French asked for the manager, and here again that gentleman shook his head when French stated his business.

“I should be only too glad to help you, Mr. French,” he declared, “but I fear it is quite impossible. In the first place we don’t know the numbers of any of the notes which passed through our hands, and we don’t, therefore, know if we had the one in which you are interested. Apparently you don’t even know it yourself. But even if we did know, we couldn’t possibly tell you who paid it in. So much money comes in over the counter that individual notes could not be traced. And then we have no idea of the date upon which we received this one, if we did receive it. You think we lodged it yesterday week. We might have done so and yet have received it weeks before. You see, we keep a fairly large sum in our safe in connection with our foreign exchange department.”

“Do you give receipts for all monies received?”