"All but the diamonds is right!" These words were spoken by a sarcastic voice, chill as an icicle, that came from the open door. They wheeled to look into the muzzles of two automatic pistols that were trained on them by a stocky individual who faced them with a twisted, knowing grin. "Danny Kelly!" Bart gasped, raising his hands slowly to the level of his shoulders. He knew the ex-army captain was a dead shot with the service pistol, and a desperate man since his disgrace and forced resignation. "What's the big idea?" he demanded. "You don't need to ask. Refused me a loan this morning, didn't you? Now I'm getting it this way." Kelly turned savagely on Van, prodding his ribs with a pistol. "Get 'em up, you!" he snapped. Van had been slow in raising his hands, gaping in stupefied amazement at the intruder. Now he reached for the ceiling without delay. "You'll serve time for this, Danny!" Bart shouted. "Shut up! I know what I'm doing. And back up, too--where--no, the other door." Kelly was forcing him toward the door of the cellar at the point of one pistol as he kept Van covered with the other. Bart clenched his fist and brought it down in a sudden sweeping blow that raked Kelly's cheek and ear with stunning force. But the gunman recovered in a flash, dropped the muzzle of his pistol and pulled the trigger. Drilled through the thigh, Bart staggered through the open door and fell the length of the stairs into the darkness of the cellar. Kelly laughed evilly as he slammed the door and turned the key. "Hold it, you!" he snarled as he swung on Van who had dropped his hands and crouched for a spring. "If I drill you, it won't be through the leg. I'll take those diamonds now." * * * * * He pocketed one of his pistols, and, keeping the other pressed to the pit of Van's stomach, went through his pockets. Then he added those on the tray by the crystal bowl to the collection, and transferred the entire lot to his own pocket. "Now, you clever engineer," he grinned, "we'll just operate this trick machine of yours for a while and collect some more. Hop to it!" He watched narrowly as Van stretched his fingers to the controls. "No monkey business, either," he grated; "you'll not change a single adjustment. I've been listening to you and I know the clock of the telescope is keeping the ray trained on the same spot. You just operate the ray and nothing else. Get me?" Van did not think it expedient to tell him of the drift caused by inaccuracies in the clock and perturbations of the moon's motion. He was playing for time, trying to plan a course of action. "There may not be any more diamonds," he offered as he tripped the release of the ray. "Oh, there'll be more. Don't try to kid me."