Palmer’s small eyes narrowed craftily. “Grif, perhaps. Almost any quiet, thoughtful kind of kid would do, so long as he wasn’t the kind that blabs.” “And Grif doesn’t blab?” “He hasn’t blabbed to you,” Palmer smiled. “Mr. Bradley was with Grif most of the afternoon last Saturday, and on Saturday night Grif walked in his sleep. I came down and let him in, and he spoke to me afterwards, up in his own room, in a very peculiar way about some danger.” “What sort of danger?” “I didn’t quite understand; but not a very nice sort:――a danger that would come from a dead person.” The doctor drew in his lips, but he said nothing. “Mr. Bradley was also with him on Sunday afternoon, and on Sunday night Grif was taken ill. I have an idea that on Sunday afternoon they talked pretty freely――about the interesting subjects――because Mr. Bradley told Miss Annesley they hadn’t talked at all, that Grif had been asleep most of the time:――which was a lie.” “How do you know? Did Grif say so?” “No; he didn’t give his pal away. He was even anxious to believe he _had_ been asleep;――which probably means that the subjects were a little _too_ interesting.” “And what were they?” “I don’t know: I can only guess. He may have told him what he had done, and what made him do it. If I had been allowed to sit up with Grif, as I wanted to, I believe I should know at this moment what he _had_ done. I believe Grif knows, but he will never tell.” Doctor O’Neill had watched Palmer, as he produced these explanations, with an ever increasing curiosity. He now grunted, “I wonder!” “He’s been here since then,” Palmer went on, “but he hasn’t seen Grif. I saw him instead.” “And――you have kept all this to yourself?” “Yes.” The doctor was silent. Then he said simply, “You’re a wonderful boy, Palmer! I shall give myself the pleasure of calling again upon Mr. Bradley.” “Hadn’t we better find out first what it was he did before they shut him up? It seems to me very likely that he gets dangerous.” “And how do you propose to find out?” “I’m going to try your way: but I’ll call when he’s not at home. There’s always a chance of picking up something on the spot.” “And if he comes back and finds you?” “That will be exciting, won’t it? You see, he knows already that I’m watching him, and he hates me like poison.” “And you’re willing to undertake this――to try to carry it through by yourself?” “I haven’t anybody to help me.” “And you won’t be afraid?” “Not too much――when the time comes. I’d rather have had my revolver, of course, but it was sent back to the shop and the man was told not to let me get it again. I’ll just have to make sure Bradley doesn’t catch me.” “But suppose, for a moment, everything you say to be true. The man may be homicidal!” “I think that’s what he is.”