“I was satisfied that Rezonoff had engineered it,” he continued, “from the fact that my wife had induced me to employ several of her countrymen at the plant; but I determined to say nothing until I could confirm my suspicions. Last night I discovered that my brother-in-law and two other men had secretly visited the house, and by putting two and two together I finally reached the conclusion that it was for the purpose of secreting the colonel on these premises. I could find out nothing from the servants, since they are all under Mrs. Schilder’s domination; but by conducting a quiet search on my own hook, I eventually found the colonel, released him, and for the last two hours have had him in my apartment, restoring him and getting him in shape after his experiences. “I also kept on the watch for developments in the meantime,” he went on, “and by cross-examining one of the footmen who appeared to me to be acting suspiciously, forced him to confess what had befallen you and your companion. The colonel and I then came here at once to liberate you; and since the sergeant, as I understand, is in the cellar, we will proceed there at once to set him free, also. “First, however”--he turned so as to include the colonel in his remarks--“I wish to consult you gentlemen in regard to future steps. I make no plea for Rezonoff, of course; he must be dealt with as you see fit. But I do hope that some way can be found to cover up Mrs. Schilder’s folly, and----” “Don’t worry about that, dear Otto,” interrupted a taunting voice from the head of the stairs. “The way is here!” CHAPTER XXX. THE EXPIATION. Turning in the flood of light which suddenly burst on them, the surprised four saw Rezonoff and his accomplice, Pepernik, each with a flash light in one hand and a big revolver in the other. Catlike, the Russians had crept up the stairs, and had caught their quarry napping. “Hands up, there!” Rezonoff snapped. “I don’t believe any of you are armed, but all the same, I am taking no chances. Pepernik, step over and search those men.” The ceremony concluded to his satisfaction, he lowered his gun, and, stepping forward, swept the faces in front of him with a grin of malicious triumph. “Rats in a trap, eh?” His tone was savage, pitiless. “Well, like rats you shall perish. The old man there was to have been my only victim; but since you all have--what is the American phrase? Ah, yes--‘butted in,’ you will all--even you, Otto--have to share his fate. I shall lock you all in up here, and then set fire to the house. Already there are inflammables in every room below, the nearest fire-alarm boxes are disconnected, and all surrounding telephone wires cut. The blaze will get a rare start, I assure you.” Involuntarily, Schilder, Meredith, and her father recoiled before such fiendish malice. Only Grail held himself unmoved.