Stone’s heavy breathing was very audible to the detective as the latter stood watching the dramatic scene. He saw the miner take the little leather case from his pocket and remove the hypodermic syringe. After that, leaning over his unconscious partner, the madman plunged the needle into Crawford’s forearm, close to the elbow, and the plunger was pressed home with one quick movement of the powerful thumb. As soon as the deed was done, Stone gave an exultant exclamation, and, still leaning over the bed, shook his clenched fists at the motionless body. “It was either you or me, curse you!” he said, as if growling, his face working savagely. “And I have won. You’re as good as done for, and unless you stop playing with me as a cat plays with a mouse, you won’t have a chance to do what you want to do with me. I’ve taken care of myself so far, and I guess I can keep on doing it until you’re too sick to try any tricks on me. Follansbee says you’ll be dead before the twenty-seventh, and he ought to know. Anyway, he won’t get his money if you’re not.” CHAPTER XXV. THE MADMAN’S GET-AWAY. The words were spoken aloud in a thick, jerky voice, and it seemed to be all that Stone could do to keep his clutching hands from his senseless partner’s throat. Doubtless he remembered the rascally doctor’s promise that Crawford would know nothing about it all when he woke in the morning, and that was probably what stayed his hand. Had the detective been in any doubt of the man’s condition, it would have vanished then, and Stone’s irresponsibility was even more evident when he turned away from the bed, and the light from the transom struck his face. It was wrinkled into a mask of maniacal triumph, and the glare in the eyes was more like that of a wild animal than of a human being. Nick held his breath for a moment. Stone was heading directly toward the bathroom, apparently with the idea of washing his hands after handling the drugged sponge. If he should enter there, discovery would be inevitable, and the detective would have a crazy man to handle—a task which even he did not care to contemplate. Presently, however, when Stone was only four or five feet from the door of the bathroom, he suddenly wheeled about and recrossed to his own door, through which he disappeared. His shrewdness had evidently suggested the desirability of performing the necessary ablutions in his own room.