She said it gravely and there could be no mistaking her earnestness. Frank bowed his head in reply; for there was nothing he could say. Several times more they whirled about the room; and then Frank bethought himself to ask the girl who she was. "Will you tell me your name?" he asked. "I am Lieutenant Chadwick of His British Majesty's service." The girl smiled and would have replied, but at that moment the music ceased. Frank offered her his arm and led her back to her seat and there was no further opportunity for the girl to reply to the lad's last question. As she resumed her seat, Frank bowed once more, then turned on his heel and strode back to his own table, where Lord Hastings and Jack were awaiting him eagerly. "Well, fair charmer," Jack greeted him. "How----" Frank silenced his chum with a gesture. "This is a serious business," he said quietly and told the others what the girl had said. "And you admitted it?" exclaimed Jack in a subdued voice. "She'll tell every German in forty miles." "No, she won't," declared Frank. "She was telling the truth." Jack laughed aloud. "Of all the credulous----" he began. "Look here. I tell you she was telling the truth," declared Frank angrily. Again Jack laughed and Frank was about to make another angry remark when Lord Hastings interfered. "Perhaps Frank is right," he said quietly. "At all events, it is nothing for you two to fight about." "We're not fighting, sir," said Jack. "But the idea----" "The idea nothing!" Frank broke in. "I guess I know what I am talking about. I danced with her, didn't I? You didn't." "Ha! ha!" said Jack. "You see, sir, he brags about it. She's fooled him, all right." "Don't you believe it, sir," declared Frank. "I tell you, sir, the girl was telling me the truth. Why, sir, you have only to look at her----" "Now we have it, sir," exclaimed Jack. "That's it. You have only to look at her. Ha! ha!" "I tell you----" Frank began angrily again. Jack made his chum a bow across the table. "You are right," he said with a superior air that only angered Frank the more. "She told you the truth." "Enough of this," interposed Lord Hastings. "No matter whether she told the truth or not, we are in danger. If she didn't tell the truth we are likely to be set upon at any moment and if she did the German officer probably will make trouble. The best thing we can do is get out of here." He signaled the waiter and paid the check. "Come," he said and got to his feet. The waiter brought their hats and cloaks and Lord Hastings moved toward the door. Jack followed him and Frank came last. On the way to the door it was necessary to pass the table at which the German officer and his companions were seated. Lord Hastings walked by without a glance, as did Jack. Frank would have followed, but the German suddenly jumped to his feet and confronted him with an imprecation. "Stand aside," said Frank quietly.