"Well, I'm sorry,--since it seems to worry you so much. Louis introduced us yesterday afternoon. We met just outside of Louis' gate. Monsieur was taking the air just before the snow began, and, as it happened, so was I. You two might have been, also, if you hadn't felt so lazy and hung about the fire indoors." As usual, she had hit them on the raw. They might have known it! "I think he is quite charming," went on the Imp amiably. "We had a long talk. He praised my French accent, and says that he prefers to call me 'Mademoiselle Hélène,' instead of 'Bobs' or 'Bobbie' or even 'Roberta.' He asked me a lot of questions about this place and the village and all that, and finally he told me why he came here." "He _did_?" gasped the two girls. "What was the reason?" At that moment they could have hugged her for seeming so communicative. "I'll tell you," she answered with dangerous sweetness. "He came over to see Louis!" Their faces fell, but they tried hard not to show their indignation. "Of course," agreed Sue, "but _why_ did he come over here to see Louis? That's the question." "If I told you _that_, I wouldn't have any interesting secret of my own," answered the Imp loftily. Then, feeling her revenge complete, she sped away into the house, leaving the puzzled and indignant pair behind her. January 20, 1914. Louis told us the _strangest_ thing to-night. I must write about it before I go to bed. It makes this mystery about the queer old gentleman at his house deeper and deeper. He came over (Louis, I mean) to our house to-night, as he said he would yesterday. But he seemed perfectly furious about something, and instead of wanting to study, he said he'd just have to tell us what had happened, or burst. Fortunately, Carol and I were alone. If the Imp had been around, I just couldn't have stood having her hear everything that we did. She knows too much already,--sometimes I think a great deal more than we do,--about all this, and I'm glad to get ahead of her on something. Anyhow, this is what Louis told us: "This morning was the limit," he began. "I thought I'd take a spell at working on that little motor-boat I'm building in the old feed-room at the back of the barn. I haven't done much at it lately, because the weather's been so cold. But to-day was mild, and I thought I could make a lot of progress. You know I've saved up enough of my pocket-money for the engine, and I'm going to send for it next month. Well, what must Monsieur do, but trail out to the barn after me. I couldn't very well prevent him, so I let him come along, but I didn't explain what I was doing there till we got into the room.