“Out of regard for the memory of her brother, as she told Inspector Moon.” “Well,” murmured Fuller thoughtfully, “that is reasonable enough since she appears to have had a strong regard for her brother. Perhaps he commended Jotty to her care.” “It’s not improbable. The poor wretch may have wished to give the boy a chance, and if so, it shows that there were decent feelings in him. But if you visit this boarding-house I wish you to keep an eye on Jotty.” “Why?” Alan looked up quickly. “Because I believe the boy knows much more than he has hitherto admitted.” “Oh,” said Fuller, after a pause, “so it is probable that Miss Grison’s interest in the lad is not wholly philanthropic. You fancy that she may desire to keep him under her own eye lest he should say too much.” Latimer shrugged his shoulders. “I can’t say that I quite took that view, Alan, as Miss Grison may really be acting kindly out of regard for her brother’s wishes. All the same I believe that Jotty knows things about the murder which he is keeping quiet, and it will be just as well to watch him more or less closely.” “But on what grounds——?” “On no grounds whatever. It’s just an idea I have, and may be all rubbish.” Fuller nodded. “On the other hand it may be useful not to reject your idea, Dick. I shall watch and question Jotty if I get the chance.” “Be careful, Alan. He is a sharp lad.” “I’ll see that he does not get the better of me. Dick, isn’t it strange how suspicious one gets of everything when on a man-hunt?” “Yes. But it’s natural enough. On a trail one always observes small signs to indicate the direction, and so everything around becomes of value in the way of evidence. However, you know what you have to do?” “Yes. And you?” “I shall keep in touch with Rotherhithe and Mother Slaig’s boarding-house and Moon. Whatever I learn you shall know. Good luck, Alan, to your hunting.” “Ditto to yours, Dicky, and now clear out and let me get to work.” Latimer tramped to the door and vanished with a friendly growl. CHAPTER VI THE BOARDING-HOUSE