She didn't answer. She simply couldn't tell him that she had, that the man who was rifling Major Martingale's desk was Frederick Befort, Count Ernach de Befort. Richard pressed her fingers gently.

"Was it Befort?" he asked in that same quick whisper.

Rebecca Mary pulled her fingers from him. "How did you know? Oh, I've told you! I've just the same as told you!" She covered her face with her hands.

Richard reached behind her and turned the key in the lock so that the door could be opened while Rebecca Mary watched him in cold despair. She couldn't understand why he did that. Surely Richard could be trusted. After Richard had unlocked the door he put his arm around Rebecca Mary and drew her out on the terrace.

"But—but——" objected Rebecca Mary, who couldn't understand why he wanted to take her away unless he wished to give Frederick Befort an opportunity to escape.

"Rebecca Mary," Richard said most irrelevantly as he drew her out with him, "you are a goose. A dear little goose," he added as if to explain to Rebecca Mary exactly what kind of a goose she was.

Rebecca Mary pulled herself away impatiently. Why should Richard waste time calling her names when there was a spy in Major Martingale's office? She stammered as she tried to tell him that there were other things for him to do now than to call her names. With a laugh Richard tightened the arm which was still around her.

"I'm going to tell you something," he said, bending his head so that he could speak directly into her pink ear. "When you locked Befort in the office you locked up the man who invented the thing we are working on. Yes, you did!" as Rebecca Mary pushed him away with a funny little strangled exclamation. "Wait a minute and listen! Yes, I know that we have all been afraid of a leak, but there hasn't been one. No, there hasn't! Listen! You know Befort comes from Luxembourg?" Rebecca Mary nodded a dazed head. She did know that, from the River Sure. "And how hot he is at the way the Germans have treated his country and his grand duchess? He was so mad that he couldn't stay neutral. He joined the French Foreign Legion and fought until he was wounded and discharged. He had invented this—this"—evidently Richard didn't know what to call the great experiment when he was talking to Rebecca Mary—"this thing," he said at last. "He had talked about it to the kaiser before he perfected it, and the kaiser wanted him to promise to give the thing to Germany. Joan and her mother had come to this country. The countess was an American, you know. She died and Befort came over for Joan. He decided he couldn't find a safer place to work out his idea than the United States. He came to Waloo and worked alone for months. Then he discovered that German agents were watching him, and he was afraid they would steal his plans. He was in the bank one day and talked to me. He never spoke of Joan so perhaps it isn't strange that I didn't connect your loan child with him. I arranged for him to meet Mr. Simmons. The thing was just in his line, and he could give Befort protection. Mr. Simmons found him a place in his factory and mechanics to help him and got the government interested for it is a big thing, a mighty big thing. Everybody came down here to finish up the job where there would be no chance of German I. W. W. interference. But you see Befort didn't have to steal the plans. He had them in the brain that invented them."

"Oh!" Rebecca Mary couldn't say another word to save her life. Her face crimsoned. She wished the terrace would open and drop her into Pekin or Shanghai. She didn't care which. How could she have made such a mistake? "But the ball!" she exclaimed suddenly, and she told Richard about the glove which Frederick Befort had turned into a ball and which was stuffed with drawings and notes for something.

"I've no doubt it was. Befort has a lot of ideas, and if he took any papers from his pocket they would be sure to be covered with drawings and figures. As for German words, you know he was practically brought up in Germany?"