"I decline to tell you; nor do I wish to hold further conversation with you," said Fordyce with asperity.

Mindiggle laughed loudly.

"You'll change your tune, my boy," he exclaimed. "Long before I'm done with you you'll be ready to answer my questions. You are a prisoner—a state prisoner—on a charge of conspiracy against the Russian Government. There is no prospect of rescue. With other pressure heavy upon them the Russian officials dare not listen to the protests of the British Embassy, even if it were known to your friends that you are here. Let me tell you that German rule will be all-powerful here. The followers of Kerensky, of Lenin, of Trotsky, of Korniloff—all will be completely subordinated to their rightful masters—the military force of the German Empire. Already negotiations are in progress for peace between Germany and Russia —and the terms will be those of a victorious Germany, let me tell you. What do you think of that?"

Fordyce made no reply. He knew that his tormentor told hard facts, but he saw no reason why he should agree with him. He was on the point of returning to the cellar when Mindiggle continued.

"You may just as well know what is in store for you," resumed the spy. "You and your companion will be kept here until such time as is convenient for you to be taken into German territory. Really, I don't know why I shouldn't give orders for you to be executed, unless I consider that alive you will be more useful to the German Government. You will be fed during your imprisonment here, so you need have no fears of death by starvation; but, remember, any attempt at escape on your part will be visited by the severest punishment."

Unostentatiously the Sub measured the distance between the floor of the passage and the opening through which the spy was speaking. There were six iron rungs, by which Klostivitch had climbed when he tricked the two men into their prison—and Mindiggle's leering face was tantalizingly close.

With a sudden bound Fordyce scrambled agilely and rapidly up the rough-and-ready ladder. So astonished was the spy at the sudden onslaught, and taken at a disadvantage by the fact that he was lying at full length on the floor, that the Sub's attempt was within an ace of success.

But the ironwork that had supported Klostivitch's spare frame was unequal to the task of bearing Fordyce's weight. One of the bars was wrenched bodily from its setting, throwing the Sub to the ground, at the same time capsizing the lamp.

When he recovered his feet the young officer found that Mindiggle had gone and that the stone slab had been replaced over the aperture.

Fordyce returned to the cellar to resume his interrupted watch and to ponder over the recent conversation. It was beginning to dawn upon him that he was "up against a big thing". The affair was not merely an internal plot on the part of one of the many sections of Russian revolutionists, but an international intrigue that, if successful, might seriously jeopardize the Allies' triumph.