"Thought you could put one over on Al Cadorna, did you?" a voice rasped.

The room spun round as he tried to regain his feet. A mist swam before his eyes. Al Cadorna! The most picturesque figure in gangland.

Credited with a dozen killings and with ill-gotten wealth untold, this leader of the underworld openly boasted that the police had never gotten anything on him. And they hadn't. So it was a criminal who had laid hands on Shelton's robots, not a foreign spy. Worse and worse. He thought of what they might be able to do with these invisible mechanical things: make gunmen out of them; safe blowers; house breakers. Why, society would be at their mercy; banks defenceless; the mints, even--

"Stand up on your pins, you worm! Let's have a look at you!" The muzzle of an automatic was thrust in his abdomen, prodding insistently. Things stabilized in the room and he looked up into the cruelest face he had ever seen, and recognizable from the many pictures which had appeared in the yellow press.

Eddie took in the surroundings at a glance. He was in a low-ceilinged room that was almost unfurnished. In one corner there was a replica of Shelton's robot control, teleview disc and all. Carlos had just pulled the switch and the robot was taking visible form. The man who prodded him with the automatic was Cadorna, no doubt of that. His evil leer and yellow eyes marked him at once. The other occupant of the room was a big square-built man with a patch over one eye and strips of adhesive tape across his nose--his antagonist of the night before.

Must have sneaked off after he came to; it was safer to send one of the robots after the _verdammt Amerikaner_. Eddie restrained a chuckle at the thought.

"Nothing to laugh at, kid!" Cadorna snarled. "You're goin' for a nice long ride pretty quick. Know that?"

Eddie's head was clearing rapidly, but he pretended to sway on his feet. Lina and her father were not in sight. If only he could spar for a little time.

"What's the idea?" he asked. "Haven't you guys got enough?"

"That's our business. We know what we're doin', and when you b.u.t.ted in you just signed your own papers. Dead men don't talk, you know, kid!"

There was a door at the other side of the room. If only he could see whether Lina was in there; whether she was alive.

"Tie him up, Gus!" Cadorna kept the pistol pressed into the pit of Eddie's stomach as he gave the order. "Hands and feet--and make it a good job, you wiener."

Eddie shouted then. "Lina!" Resistance was useless, but it would give him some satisfaction to know she still lived even though Cadorna pulled that trigger in the next instant. No reply came from beyond that door.

"So!" Cadorna grinned maliciously. "Another victim! Carlos first, then you, and now--Al Cadorna. If you're worrying about her, kid, you needn't. She'll be perfectly safe with me."

Eddie's roar of rage shook the rafters. Heedless of consequences, he brought his knee up suddenly and violently. Cadorna sank to the floor with a groan, his pistol clattering harmlessly on the rough planks. In a flash Eddie retrieved it, dropping behind the prostrate form of the stricken gangster. Gus had fired and missed. Now he dared not shoot for fear of hitting his chief. Eddie's gun spat fire and the big German clapped his hands over his heart, his good eye widening in surprise. Then he reeled and pitched forward on his face. A feminine cry sounded from the adjoining room and Eddie's heart skipped a beat when he heard it.

Carlos was padding across the floor, trying to get into a position where he could fire without endangering Cadorna. Eddie swung his pistol around and pulled the trigger. A miss! He fired again, but too late. Fingers of steel had gripped his wrist and the king of gangland rolled over on him, twisting the gun from his hand. Clubbed now, the pistol was raised high over that distorted, malicious face. Eddie tried to twist away from under the blow as it started its downward swing, then a thousand steam hammers. .h.i.t him all at once and ...

blackness....

Something was pounding insistently at the doors of his consciousness.

He must pull himself together! They'd left him for dead and he was--almost. But voices as loud and raucous as those would waken the dead. He groaned with pain when he attempted to move his head.

"That for you, you rat." It was Cadorna's voice. "Try to take my woman, will you?"

The pounding resolved itself into the angry barking of an automatic.

Someone squealed with mortal agony. Eddie opened his eyes cautiously and saw that the room was full of people. The pungent odor of burned powder a.s.sailed his nostrils. There was Cadorna and Carlos, David Shelton and Lina. An undersized, dapper youth stood over the body of the big German, his hands outstretched before his horror-stricken face. A moment he stood thus, like a statue. Then his knees gave way beneath him and he crumpled into a grotesque heap beside the man who had been called Gus. Such was the manner of Cadorna's dealing with those who displeased him.

The door to the adjoining room was open. Lina and her father had been kept in there, with the little thug as their guard. Evidently Cadorna had caught him trying to force his attentions on the girl. Good thing he'd killed him.

Lina was sobbing and the sound brought increased agony to the helpless Eddie. He lay still where they had placed him, beside the table which supported the robot control apparatus. His cheek was against the floor and he saw that a little pool of blood was forming there, blood drawn by the b.u.t.t of Cadorna's pistol when it contacted with his skull. He was bound hand and foot. They hadn't thought him dead, after all.

Keeping him for that ride and a watery grave. Couldn't afford to leave his body around where it might be found.

"What are you going to do with us?" Shelton was asking, his voice bravely defiant. Game old sport at that, he was.

"Don't fret over your daughter. Al Cadorna's her protector now, and she'll be taken care of better'n she's ever been. But you--that's somethin' else again. First off, you're goin' to give Carlos the dope on these trick metals in your machines. He couldn't a.n.a.lyze 'em, or whatever you call it. Then you're goin' to have a nice long ride with your friend over there."

"You'll go to the chair for this, Cadorna. And I'll never tell you the secret of the alloys."

"Tell him, Dad," Lina was crying. "He'll let us go if you do."

"The h.e.l.l I will, girlie. What I said, goes. We'll make him talk first, too," Cadorna snarled.

"Never!" Shelton shouted.

Lina had seen Eddie and, with a little cry, she bounded across the room. Carlos was after her like a panther.

"Hands off that dame!" Cadorna yelled. "Let her cry over the boy friend if she wants to. Won't do her any good. You get busy and set one of the tin soldiers goin'. Make the old buzzard talk."

Carlos muttered sullenly as he started the motor-generator. Give him a chance and he'd knife Cadorna in the back--for Lina.

The girl was kneeling at Eddie's side now, examining his bleeding scalp. He opened one eye and gazed at her solemnly, pursing his lips in a warning to silence. She caught her breath and nodded in understanding.

Cadorna was shouting like a madman. "Keep the d.a.m.n thing so I can see it, you spig! They make me bug-house when you blink 'em off. Besides, I don't trust you."

The bold Cadorna was afraid of something he couldn't see! An idea flashed across Eddie's quickening mind. But he was helpless--bound so tightly that the cords cut his wrists.

One of the robots was clanking across the room. Lina looked up in momentary terror and Eddie saw her eyes stray over the table top where Carlos was working.

"Want to grab the old one?" the Chilean called.

"Yes. Pick him up and squeeze him till his ribs crack. He'll talk."

Lina let a little moan escape her lips. Eddie was watching as the iron monster approached the scientist and flung its tentacles around his madly struggling form. Lina was fussing with him, trying to turn him over. Cadorna's back was to them, his face thrust into that of Shelton, who was fighting desperately to avoid the crushing grip of the robot.

"Give him a squeeze, Carlos."

Shelton's yell brought another low moan from the girl's set lips. She was working furiously at Eddie's bonds. Lord, she had a knife! Good girl! Must have found it on the table. His hands were free and he wriggled his fingers to bring them to life. Then his feet. He was able to move. Lina whispered in his ear.

"All right?" she asked anxiously.

"Yes," he whispered. Somehow their lips touched and Eddie felt his heart pound at his temples. New life came to him with a rush of exaltation.

Shelton was crying out in pain and Lina sprang to her feet. "You beast!" she shouted at Cadorna. "Let him go."

Then she was across the room, tearing at the unyielding metal bands that pinioned her father and slowly crushed him. Cadorna laughed mirthlessly.

"Tell him to give me the dope," he retorted. "Then I'll let him go--for a while."

Shelton's head hung on his chest, rolling weakly from side to side.