Four men picked up the herculean frame of the unconscious doctor and hoisted him up on the table. Carson seized his head and bent it forward and the dwarf took from a case a syringe with a five-inch needle. He touched the point of it to the base of the doctor's brain.

"Slavatsky! Look!" cried Frink.

With an exclamation of impatience the dwarf turned and stared at a disc set on the wall of the cave. It was glowing brightly. With an oath he dropped the syringe and snapped a switch, plunging the cave into darkness. A tiny panel in the door opened to his touch and he stared out into the light.

"Soldiers!" he gasped. "Quick, the back way!"

As he spoke there came a sound as of a heavy body falling at the back of the cave. Slavatsky turned the switch and flooded the cave with light. At the back of the cave stood Operative Carnes, an automatic pistol in his hand.

"Open the main door!" Carnes snapped.


lavatsky made a move toward the light, and Carnes' gun roared deafeningly in the confined space. The heavy bullet smashed into the wall an inch from the dwarf's hand and he started back.

"Open the main door!" ordered Carnes again.