For nearly an hour the jury deliberated, and then they brought in the expected verdict of wilful murder against some person or persons unknown.

“You did that quite well,” Major Valentine assured French as the two men walked to the former’s car after the inquiry. “If Roper is alive and reads your evidence—and he is certain to do that if he is in the country—he will think he is safe and may start changing the notes. By the way, are you sure that Tarkington and that clerk of his won’t give you away about the numbers of the notes? Your evidence must have sounded peculiar to them.”

“I thought of that,” French answered, “and I saw them both and warned them. They’ll hold their tongues.”

“I suppose no one has been trying to get just that information out of them?”

“No, sir. I asked them that first thing, but no one had.”

Before Major Valentine left he discussed with French the steps that he would take to try to find out whether any one had disappeared at the time of the fire. The inquiry had already been made, but this time it was to be pressed much more energetically. At the same time the watch for the stolen notes was to be redoubled, and French undertook to arrange that a general memorandum on the subject would be sent to all the banks in the country.

A third line of research was suggested by the medical evidence, and this French and the major agreed to work jointly. The most searching inquiries were to be made for any one who had obtained or tried to obtain cocaine or a hypodermic syringe during a period of several weeks prior to the tragedy.

In addition to these three there was, of course, the most important and hopeful line of all, a direct search for Roper. French undertook to organise this with as little delay as possible.

After discussing the situation for nearly two hours the two men parted, hopeful that their several efforts would before long place the key of the mystery in their hands.

CHAPTER SIXTEEN: A Double Recall