"Now, Rhoda, there's no harm in a few candies," protested Ruth, and then she changed the subject quickly, for she evaded a passage at arms with the sisters whenever possible. The talk, however, soon drifted to the never forgotten subject of the murder. The sisters mulled over all they had heard or learned during the day and begged Stone to propound theories or make deductions therefrom. Stone obeyed, as that was what he was employed for. "I think Miss Van Allen is masquerading as somebody else," he affirmed. "I believe she is in some house not very far from this neighborhood, under the care of some friend and accompanied and looked after by her maid Julie. I believe she is in touch with all that goes on, not only from the newspapers but by means of some spy system or secret investigation. But the net is drawing round her. I cannot say just how, but I feel sure that we shall yet get her. It was a grievous mischance that I let her escape last night, but I shall have another chance at her, I'm sure." "And then you'll arrest her," said Rhoda, with a snap of her thin lips. "I dare say. Lowney tells me the finger prints on the little knife with which Mr. Schuyler was killed are clear and unmistakable, but we have not yet found out whose they are." "And can you?" said Ruth, anxiously. "If we find Miss Van Allen," said Stone, "we can at least see if they are her's." "Pooh!" said Fibsy contemptuously, "why did'n' youse tell me before that you had the claw prints? I kin get Miss Van Allen's all right, all right!" "How?" said I, for Fibsy had lapsed into the careless speech that meant business. "Over to her house. Why, they're all over. I've only gotto photygraph some brushes an' things on her dressin' table to get all the prints you want." "That's true," agreed Stone. "But it won't give us what we want. Nobody doubts that Miss Van Allen held the knife that stabbed Mr. Schuyler, and to prove it would be a certain satisfaction. But what we want is the woman herself." It was then that I noticed Ruth's maid, Tibbetts, hovering in the hall outside the library door. "You may go home, Tibbetts," Ruth said to her, kindly. "These gentlemen will stay late and I'll look after them myself." Tibbetts went away, and Ruth said, explanatorily, "My maid is a treasure. I'd like to have her live here, but she is devoted to her own little roof tree and I let her off whenever possible." I knew Tibbets had a home over on Second or Third Avenue, and I thought it kind of Ruth to indulge her in this. But after a change of domicile herself perhaps Ruth would arrange differently for her maid. And, too, as Winnie had often told me of Ruth's cleverness and efficiency in looking after herself and her belongings, I well knew she could get along without a maid whenever necessary. "Did you ever trace that picture in Mr. Schuyler's watch?" Ruth asked, a few moments later.