"Quite remarkable!" Voissard's dark eyes were fixed reflectively on Jimmy. "Describe the appearance of this man. I may be able to place him. The Prefect of Police, here in Paris, is my personal friend. Through him I have learned much regarding criminals. I have seen photographs of many Germans badly wanted by the Allied powers, either for particularly serious crimes, or because they are known to be spies of unusual cleverness and daring." "This Charles Black, as he called himself, is no common criminal," began Jimmy, then continued with a detailed description of the "tiger man." The aviator listened attentively, a slight frown contracting his dark brows. "I cannot place him," he said when Jimmy had finished. "My friend, the Prefect, may be able to do so. I intend to remain in Paris for a day or two. I expect to dine with him to-morrow evening. I will make inquiry of him. In case I should learn anything of interest I will communicate it to you either in person or by letter. It is possible that I may soon visit your camp at R----." "I wish you would sir," Jimmy responded with a fervor that conveyed his utter delight of the prospect. "_Merci._" The one simple word was spoken as only a Frenchman can say, "Thank you." Their eyes meeting levelly, boy and man each realized that he had found a friend. CHAPTER III TRAILED "You made us tell our troubles first, now it's time the Twinkle Twins took a turn at talking," Bob presently suggested. The _garcon_ having at last been allowed to take the dinner order of the new arrivals, a brief lull in conversation had ensued. "Oh, we haven't much to tell," Jack responded lightly. "We made good in a hurry at Berkley. You can't keep a good man down, you know." "A couple of good men," insinuated genial Jerry. "Twins that are equal to the same twin, are equal to each other," supplied Jimmy, smilingly misquoting a well-known axiom in geometry. "That's us." Jack beamed widely. "We hunt in couples. There's only one drawback. Some day when I go up in a Nieuport and bring down a Zep, Jerry'll probably get the credit for it." "You mean it'll be just the other way round," retorted Jerry. "It's a sore subject. Let's can it. Where was I when my beloved twin butted in? Oh, yes. We did pretty well at Berk. As soon as we showed 'em, we put up a howl to go over. We kept it up, too. They got so sick of us, they shipped us out of the States to get rid of us. "We had a peach of a voyage over. Fine weather, and neither of us seasick. We were used to the old pond, you know. When we landed we were sent to an American aviation station near Paris. We've been there ever since. That's only a few weeks, though. We've been studying like anything, and making a few flights. Haven't yet had a chance to go out on a real fighting expedition."