But Mr. Bowyer would think of nothing but the business in hand. “I don’t understand that window,” he said, shaking his finger towards it as he spoke. “Not at all. Why should Main want to get in and out by a window? He wasn’t a stranger.” Hewitt began a most careful inspection of the whole surface of floor, ceiling, walls and furniture of the sitting-room. At the fireplace he stooped and lifted with great care a few sheets of charred paper from the grate. These he put on the window-ledge. “Will you just bring over that little screen,” he asked, “to keep the draught from this burnt paper? Thank you. It looks like letter paper, and thick letter paper, since the ashes are very little broken. The weather has been fine, and there has been no fire in that grate for a long time. These papers have been carefully burned with a match or a candle.” “Ah! perhaps the letters poor young Rewse was writing in the morning. But what can they tell us?” “Perhaps nothing--perhaps a great deal.” Hewitt was examining the cinders keenly, holding the surface sideways to the light. “Come,” he said, “see if I can guess Rewse’s address in London. 17, Mountjoy Gardens, Hampstead. Is that it?” “Yes. Is it there? Can you read it? Show me.” Mr. Bowyer hurried across the room, eager and excited. “You can sometimes read words on charred paper,” Hewitt replied, “as you may have noticed. This has curled and crinkled rather too much in the burning, but it is plainly notepaper with an embossed heading, which stands out rather clearly. He has evidently brought some notepaper with him from home in his trunk. Look, you can just see the ink lines crossing out the address; but there’s little else. At the beginning of the letter there is ‘My d----’ then a gap, and then the last stroke of ‘M’ and the rest of the word ‘mother.’ ‘My dear Mother,’ or ‘My dearest Mother’ evidently. Something follows too in the same line, but that is unreadable. ‘My dear Mother and Sister,’ perhaps. After that there is nothing recognisable. The first letter looks rather like ‘W,’ but even that is indistinct. It seems to be a longish letter--several sheets, but they are stuck together in the charring. Perhaps more than one letter.” “The thing is plain,” Mr. Bowyer said. “The poor lad was writing home, and perhaps to other places, and Main, after his crime, burned the letters, because they would have stultified his own with the lying tale about small-pox.”