pregnant, premonitory of dread, of fear--it seemed to throb in long undulations, and the stillness grew LOUD. A moonbeam filtered in between the edge of the drawn shade and the edge of the window. It struggled across the floor in a wavering path, strayed over the desk, and died away, shadowy and formless, against the blackness of the opened recess door, against the blackness of the great steel safe, the blackness of a huddled form crouched against it. Only now and then, in a strange, projected, wraithlike effect, the moon ray glinted timidly on the tip of a nickel dial, and, ghostlike, disclosed a human hand. Upstairs, Markel coughed again. Then from the safe a whisper, heavy-breathed as from great exertion: "MISSED IT!" The dial whirled with faint, musical, little metallic clicks; then began to move slowly again, very, very slowly. The moonbeam, as though petulant at its own abortive attempt to satisfy its curiosity, retreated back across the floor, and faded away. Blackness! Time passed. Then from the safe again, but now in a low gasp, a pant of relief: "Ah!" The ear might barely catch the sound--it was as of metal sliding in well-oiled grooves, of metal meeting metal in a padded thud. The massive door swung outward. Jimmie Dale stood up, easing his cramped muscles, and flirted the sweat beads from his forehead. After a moment, he knelt again. There was still the inner door--but that was a minor matter to Jimmie Dale compared with what had gone before. Stillness once more--a long period of it. And then again that cough from above--a prolonged paroxysm of it this time that went racketing through the house. Jimmie Dale, in the act of swinging back the inner door of the safe, paused to listen, and little furrows under his mask gathered on his forehead. The coughing stopped. Jimmie Dale waited a moment, still listening--then his flashlight bored into the interior of the safe. "The cash box, probably," quoted Jimmie Dale, beneath his breath--and picked it up from where it lay in the bottom compartment of the safe. The lock snipped under the insistent probe of a delicate little blued-steel instrument, and Jimmie Dale lifted the cover. There was a package of papers and documents on top, held together with elastic bands. Jimmie Dale spent a moment or two examining these, then his fingers dived down underneath, and the next minute, under the flashlight, the morocco leather case open, the diamond necklace was sparkling and flashing on its white satin bed.