"Well, that's sumpum. Is she quick and spry-like, or poky?"

I smiled at the boy's eagerness. "She's rather alert," I said, "but, of course, quiet and respectful. I never looked at her with any personal interest, so I can only give you my general impressions."

"You see, it's this way," and the boy looked very serious, "wherever Miss Van Allen is, that Julie's there, too. And when Miss Van Allen wants errands done, of course, she sends Julie. And, of course, said Julie is disguised. I dope out all this has to be so. For Miss Van Allen has mailed letters and—oh, well, of course she could mail letters in lots of ways, but sumpum tells me, that she depends on Miss Julie as an errand girl. So, I want to find out the look of the Julie person, and see if I can't track her down, and so get at Miss Van Allen. Vicky Van, I believe her friends call her."

"They do," said I, looking sternly at the boy, "and I'll say right here, that I'm one of her friends, and I won't stand for any impertinence or any remarks of any sort about that lady. If she is suspected of this crime, let the law take its course, but until there is some direct evidence, don't you dare to connect her name with it."

"I'm only obeying Mr. Stone's orders. And, take it from me, Mr. Calhoun, I ain't so fresh as to make remarks about a lady. I'm a prevaricator of the truth, but only when it's abserlutely necessary. And on the other hand, I'm a born protector of women. Why, I'd be only too tickled to find a gentleman suspect. Or, at least, to clear Miss Van Allen from all s'picion."

"Why do you feel such a kindly interest in the lady?"

"This house, for one reason. You see, I've been all over it, at Mr. Stone's orders, and I ree'lize what a nice lady she is. I don't have to see her, to understand her tastes and her 'complishments. Why, jest the books on her centre tables and the records for her phonograph spell her out for me, in words of one syllable. And, though I'm hunting for her, it isn't with a solid hunch that's she's the knife-sticker. Not by no means. But find her I've gotto! Because F. Stone says for me to."

I looked at the boy more curiously. He was a strange admixture of street boy and sleuth. His quick, darting eyes were never still, but warily alert to catch the meaning of any sound or motion on my part. I felt as if he read me through, and would not have been surprised to have him tell me he knew of my recent communications with Vicky. But I only said, "You are, then, Mr. Stone's right-hand man?"

"I put it that way, yes. But really, I'm his apprentice, and I'm learning his trade. I study his methods, and I add some gumption of my own, and if I can help him, I'm glad and happy. And anyway, I'm learning."

"And this talk about your lying? Is that straight goods?"