She shook her head after a moment, shook it helplessly and wearily, as, finally, she walked over to the washstand, took the piece of paper from the bodice of her dress, and spread it out under the candle light. A glance showed her that it was in cipher. There was the stub of a pencil, she remembered, in the washstand drawer, and, armed with this, and a piece of wrapping paper that had once enveloped one of Gypsy Nan's gin bottles, she took up the candle, crossed the garret, and sat down on the edge of the cot, placing the candle on the chair in front of her. If the last three days had been productive of nothing else, they had at least furnished her with the opportunity of studying the notebook she had found in the secret hiding place, and of making herself conversant with the gang's cipher; and she now set to work upon it. It was a numerical cipher. Each letter of the alphabet in regular rotation was represented by its corresponding numeral; a zero was employed to set off one letter from another, and the addition of the numerals between the zeros indicated the number of the letter involved. Also, there being but twenty-six letters in the alphabet, it was obvious that the addition of three nines, which was twenty-seven, could not represent any letter, and the combination of 999 was therefore used to precede any of the arbitrary groups of numerals which were employed to express phrases and sentences, such as the 739 that she had found scrawled on the piece of paper around her key on the first night she had come here, and which, had it been embodied in a message and not preceded by the 999, would have meant simply the addition of seven, three and nine, that is, nineteen--and therefore would indicate the nineteenth letter of the alphabet, S. Rhoda Gray copied the first line of the message on the piece of wrapping paper: 321010333203202306663103330111102210444202101112052110761 Adding the numerals between the zeros, and giving to each its corresponding letter, she set down the result: 6010110505022090405014030509014 f a k e e v i d e n c e i n It was then but a matter of grouping the letters into words; and, decoded, the first line read: Fake evidence in...... She worked steadily on. It was a lengthy message, and it took her a long time. It was an hour, perhaps more, after Danglar had gone, before she had completed her task; and then, after that, she sat for still a long time staring, not at the paper on the chair before her, but at the flickering shadows thrown by the candle on the opposite wall.