Now Marie took a hand in things herself. As one of the Germans would have seized her, she stepped quickly backward and reached upward on the wall. There her hand found what she knew it would find--an electric switch. Quickly she threw it and the room was plunged into utter darkness. Eluding the grasp of the man who reached for her in the darkness, Marie stepped quickly forward. Keeping close to the wall, she made her way toward the front door. On all sides men shouted and women screamed, but the girl went on calmly. Occasional revolver flashes lighted up the darkness, but only momentarily. Lord Hastings, reaching the door, found it barred by two men. Before he could bring his revolver to bear, an outstretched arm sent it spinning from his hand. Lord Hastings growled and struck out with his fist. An arm encircled his neck and held him powerless. At the same time a voice called out: "I've got one of them!" Jack, who was immediately behind his commander, although he could not see what was going on, realized from the German's words what was up, and called out: "Where are you, sir?" "Here," came the reply. "A man has me around the neck." Jack's lips shut grimly, and, leaving Frank to guard their rear, he stepped quickly forward and laid his hand on a man's arm. "Have I hold of you, or the enemy, sir?" he asked quietly. "Must be the German," was the reply. Jack ran his hand up the arm until he felt a face. Then he drew back his left arm and his fist crashed forward. "All right," said Lord Hastings. "You've dropped him." The second man who had blocked the doorway now closed in, but Jack disposed of him quickly. Shots came from behind, and Frank's voice cried: "Getting too warm, sir. Let's move." "Come on, then," said Jack. He threw his weight against the door, and it crashed open. A moment later all three were in the street and running in the direction of the water. A crowd of Germans poured from the café after them, and the crack of revolvers sounded like a rapid-fire gun in action. "We'll have to hurry!" cried Lord Hastings. "They'll have the whole fortress on our heels in a moment." Directly the water front came into view. "Here we are!" cried Lord Hastings. "Quick, now!" He made directly toward the D-17's motorboat, which he could see was where he had left it, but at that moment a figure blocked the way. It was a German sentinel, and his rifle was pointed squarely at Lord Hastings. "Halt!" he said sternly. Lord Hastings stopped in his tracks. "What's all the row back there?" demanded the sentry. Lord Hastings would have replied, but Jack did not give him time. Stepping suddenly from behind Lord Hastings, he dived at the German's legs. He had gauged the distance accurately, and the two went to the ground violently. The sentry's gun was discharged, but the bullet whistled harmlessly over Lord Hastings's head. "No time to fool with him, Jack!" cried Lord Hastings. "Here come the others. Hurry!"