Paul, glancing in the same direction, could no longer see the man hanging in mid-air. A faint glow of light stole through the mysterious window. Hence Paul concluded that the fellow was now within the chamber occupied upon the matter that had brought him there. Stealing noiselessly forward, Paul suddenly clapped his hand upon the sentinel's shoulder, and, pointing to the grated window he cried,-- "Do you intend to arrest that villain, or are you his confederate?" The sentinel instantly turned, with confusion and guilt written upon his face. Misled by the uniform, he took Paul for a Czernovese officer, and as such he was one that must be silenced at all costs, for it was death to be caught thus in the act of treason. Lowering his bayonetted rifle to the charge, he made a thrust at Paul's body. But Paul, on the watch for this movement, sprang aside, wrested the rifle away, and clubbing it, dealt the fellow a fearful blow on the head. The sentinel staggered back and dropped to the pavement, where he lay senseless and still. Peering over the battlements to learn whether this action on his part had been observed, Paul was surprised to see a blue light at the chamber-window. The man was flashing a lantern to and fro, an action that lasted for a few seconds. Recovering from his surprise, Paul sped onward, and reached the battlement to which the rope was attached. Kneeling within an embrasure and glancing downwards, he perceived a faint cloud of smoke proceeding from the window. What was taking place within? Was the fellow setting fire to this part of the palace? It was not in Paul's nature to remain inactive while evil was in progress. He instantly resolved to descend to the chamber for the purpose of putting a stop to what he could not doubt was nefarious work. Grasping the rope with both hands, he swung himself downwards, not neglecting, however, at the same time to keep an eye upon the window. As soon as his feet touched the sill he drew forth his pistol, and without pausing to notice what was happening within the room, without a glance, even, he sent his feet through the space between the bars, a space barely sufficient to admit the passage of his body. The room was in darkness,--this much he was conscious of as he shot forward, and a smell as of smoke hung in the air. Paul fell supine upon the stone flooring, but he was up again in an instant, endeavoring to ascertain through the gloom what strange thing had happened or was happening. His attention was immediately arrested by a strange voice,--a voice lowered to a whisper that was full of guilty terror. "Is that you, Peter? What has brought you down? In God's name make no noise. Gabor is on guard in the corridor outside." "Then let Gabor enter," shouted Paul in a voice of thunder. "Ho! without there! Gabor, Gabor, whoever you may be, here is a prisoner for you."