He pulled a silver cigar-lighter from his pocket and snapped a yellow flame to it. He passed the point of the hypodermic rapidly back and forth through the little spear of fire. Finally he turned to Nick.

"Take off your coat," he ordered. "Roll up your shirt sleeve—the left one. And sit over there." He indicated the couch along the wall.

The youth obeyed without a word. The only indication of emotion was a long, miserable, wistful look at Pat as he seated himself impassively on the spot that the girl had so recently occupied.

"Now!" said the Doctor briskly, approaching the youth. "This will make you drowsy, sleepy. That's all it'll do. Don't fight the effect. Just relax, let the thing take its course, and I'll see what I can get out of you."

Pat gasped and Nick winced as he drove the needle into the bared arm.

"So!" he said. "Now relax. Lean back and close your eyes."

He stepped to the door, dragged in a battered chair from the hall, and occupied it. He sat beside Pat, watching the pale features of the youth, who sat quietly with closed eyes, breathing slowly, heavily.

"Long enough," muttered Horker. He raised his voice. "Can you hear me?" he called to the motionless figure on the couch. There was no response, but Pat fancied she saw a slight change in Nick's expression.

"Can you hear me?" repeated Horker in louder tones.

"Yes, I can hear you," came in icy tones from the figure on the couch. Pat started violently as the voice sounded. The eyes opened, and she saw in sudden terror the ruddy orbs of the demon!