"Colonel Goldapp's quarters are at present in the parsonage near the village. You will be examined there, Prince. We shall be there to-night, at least, perhaps longer."

"I see. I will be ready in a few moments. Will you excuse me if I write some instructions for Vladimir, who will be in charge after I go? You may, of course, read what I write."

"Assuredly."

Then there was silence. The room outside was so quiet that Fred had a chance to realize how perfectly the place in which he was hidden served its purpose. He could hear the heavy breathing of someone near the wall. Then a chair scraped along the floor, and in a moment he heard the scratching of a pen. And then there came a new sound, a tapping, as with two fingers. That was Boris, and quite suddenly Fred understood. Boris was tapping out a message to him in telegraphic code.

"You must take charge here," Boris tapped with his fingers. "I will tell Vladimir to get you as soon as it is safe. The parsonage where I will be taken is very near the outlet of the secret passage. If Ivan returns, tell him I am there, and that I will sing or whistle the song of the Volga boatmen from time to time, so that he may know the window of my room, if there is no guard in the room with me. Do not answer, for they might hear."

"Good boy! He certainly has nerve!" said Fred to himself, admiringly. "He doesn't know what's going to happen to him next, but he is certainly doing all he can to make things come right."

Then there was a new confusion of noise outside. Fred heard Boris call Vladimir and speak to the old servant in Russian. Then the German officer gave Vladimir his instructions.

"This place will be left alone for the present," he said. "Prince Alexander Suvaroff has been a good friend and neighbor, and, though he is an enemy, we desire to respect his property as long as possible. But neither you nor any who are left in the house with you must go out—this for your own safety—except to get food and then go yourself."

Fred heard a general movement then, and guessed that they were going out. Silence followed, and, after listening for a time, he decided upon an exploration of the secret passage. A vague plan was taking form in his mind already. It seemed to him that, as he was at liberty, he should do anything that was in his power to free Boris. Until he knew more of the lay of the land, he could not even make a real plan, but it was possible, he thought, that something that was in his mind might easily prove to be feasible.