a forefinger, and, touching with it a small bit of paper lying upon the top of the desk and just below the letter file, he lifted it deftly, and they all saw beneath it the dust of the previous day upon the polished surface.
"This," said Ferrars, holding out the bit of paper upon the palm of his hand, "was torn from something pulled from this file since Mrs. Fry dusted the furniture here yesterday morning, after Charles Brierly left the house. See, as the paper was pulled from the file this bit came off, because it was attached at the corner, as you see. It is a fragment from a newspaper. If it had been a letter the paper would not have parted so readily; it would merely have torn through."
It was, indeed, a tiny scrap of newspaper, not of the best quality, and not half an inch from the smoothly-cut corner to the ragged edge, where the file had perforated it.
"The slip of printed paper from which this was torn," said Ferrars, "was the one thing which was taken from this room because it was wanted! The rest were merely carried away as a blind."
"But," asked the doctor, "why did he make this search among the books and papers?"
"To find perhaps this very thing," replied Ferrars. "But his first and most important errand was this." He drew forth the letter given into his hands by
