“Come here!”

The giant slouched nearer.

“Where’s your flash-light?”

He produced it.

“Good! Now stay right here till we come back. If the doctor tries to leave this room, or if he talks to the girl—you know what to do.”

Tony grunted, and showed a magazine pistol in his other hand. The other man and Teresa left the room. The man slammed the door and locked it on the outside.

Carlson felt almost overcome by a feeling of powerlessness and despair. He and the girl were alone with the giant Tony, who sat stolidly by a table in the center of the room, flash-light in one hand, the automatic pistol in the other. His narrow, piglike eyes gleamed through the mask and seemed never to relax their sinister gaze.

Carlson’s plan was completely frustrated by the baleful presence of this Frankenstein Monster.

Suddenly he heard the blindfolded girl give a sob, and he saw her shoulders trembling. At the sound of that despairing sob a new impulse to action surged through him. Her only hope lay in him. He would not fail her. He would save her or die in the trying.