tell me. But he had some reason—I know he did!—some reason that terrified him. I begged him to tell me, but the only explanation he gave was that the shot was not all he heard. . . ."
"Not all!" Markham spoke with ill-concealed excitement. "He heard something else that, you say, terrified him? But why shouldn't he have told us about it?"
"That's the strange part of it. He got angry when I asked him. But there's something he knows—some awful secret; I feel sure of it. . . . Oh, maybe I shouldn't have told you. Maybe it will get Rex into trouble. But I felt that you ought to know because of the frightful things that have happened. I thought perhaps you could talk to Rex and make him tell you what's on his mind."
Again she looked beseechingly at Markham, and there was the anxiety of a vague fear in her eyes.
"Oh, I do wish you'd ask him—and try to find out," she went on, in a pleading tone. "I'd feel—safer if—if . . ."
Markham nodded and patted her hand.
"We'll try to make him talk."
"But don't try at the house," she said quickly. "There are people—things—around; and Rex would be too frightened. Ask him to come here, Mr. Markham. Get him away from that awful place, where he can talk without being afraid that some one's listening. Rex is home now. Ask him to come here. Tell him I'm here, too. Maybe I can help you reason with him. . . . Oh, do this for me, Mr. Markham!"
Markham glanced at the clock and ran his eye over his appointment-pad. He was, I knew, as anxious
