“Worth while? I should just say so.” Merriman lay silently pondering the idea. Presently he spoke again.
“Of course those figures of yours are only guesswork.”
“They’re only guesswork,” Hilliard agreed with a trace of impatience in his manner, “because we don’t know the size of the tubes and the number of the props, but it’s not guesswork that they can make a fortune out of smuggling in that way. We see now that the thing can be done, and how it can be done. That’s something gained anyway.”
Merriman nodded and sat up in bed.
“Hand me my pipe and baccy out of that coat pocket like a good man,” he asked, continuing slowly:
“It’ll be some job, I fancy, proving it. We shall have to see first if the props are emptied at that depot, and if not we shall have to find out where they’re sent, and investigate. I seem to see a pretty long program opening out. Have you any plans?”
“Not a plan,” Hilliard declared cheerfully. “No time to make ’em yet. But we shall find a way somehow.”
They went on discussing the matter in more detail. At first the testing of Hilliard’s new theory appeared a simple matter, but the more they thought it over the more difficult it seemed to become. For one thing there would be the investigations at the depot. Whatever unloading of the brandy was carried on there would probably be done inside the shed and at night. It would therefore be necessary to find some hiding place within the building from which the investigations could be made. This alone was an undertaking bristling with difficulties. In the first place, all the doors of the shed were locked and none of them opened without noise. How were they without keys to open the doors in the dark, silently and without leaving traces? Observations might be required during the entire ten-day cycle, and that would mean that at some time each night one of these doors would have to be opened and shut to allow the watcher to be relieved. And if the emptying of the props were done at night how were they to ensure that this operation should not coincide with the visit of the relief? And this was all presupposing that a suitable hiding place could be found inside the building in such a position that from it the operations in question could be overlooked.
Here no doubt were pretty serious obstacles, but even were they all successfully overcome it did not follow that they would have solved the problem. The faked props might be loaded up and forwarded to some other depot, and, if so, this other depot might be by no means easy to find. Further, if it were found, nocturnal observation of what went on within would then become necessary.
It seemed to the friends that all they had done up to the present would be the merest child’s play in comparison to what was now required. During the whole of that day and the next they brooded over the problem, but without avail. The more they thought about it the more hopeless it seemed. Even Hilliard’s cheery optimism was not proof against the wave of depression which swept over him.