Mike the Angel said: "Come on, Harry; I want to find something." He began walking back down the long, narrow shop toward the rear again. Harry followed, looking mystified. Mike the Angel stopped, sniffing. "Smell that?" Harry sniffed. "Aye. Burnt insulation. So?" "You know which one of these bins is nearest to your main control cable. Start looking. See if you find anything queer." Old Harry walked over to a nearby bin, pulled it open, and looked inside. He closed it, pulled open another. He found the gadget on the third try. It was a plastic case, six by six by eight, and it still smelled of hot insulation, although the case itself was barely warm. "What is it?" Harry asked in wonder. "It's the gizmo that turned your equipment off. When I passed by it, my own gadget must have blown it. I knew the police couldn't have made it here between the time of the fight and the time they showed up. They must have had at least an extra minute. Besides, I didn't think anyone could build an instrument that would blank out everything at long range. It had to be something near your main cable. I think you'll find a metallic oscillator in there. Analyze it. Might be useful." Harry turned the box over in his hands. "Probably has a timer in it to start it.... Well.... That helps." "What do you mean?" "I've got a pretty good idea who put it here. Older kid. Nineteen--maybe twenty. Seemed like a nice lad, too. Didn't take him for a JD. Can't trust anyone these days. Thanks, Mike. If I find anything new in here, I'll let you know." "Do that," said Mike the Angel. "And, as a personal favor, I'll show you how to build my own super-duper, extra-special, anti-vibroblade defense unit." Old Harry grinned, crinkling up his wizened face in a mass of fine wrinkles. "You'd better think up a shorter name than that for it, laddie; I could probably build one in less time than it takes you to say it." "Want to bet?" "I'll bet you twenty I can do it in twenty-four hours." "Twenty it is, Harry. I'll sell you mine this time tomorrow for twenty bucks." Harry shook his head. "I'll trade you mine for yours, plus twenty." Then his eyes twinkled. "And speaking of money, didn't you come down here to buy something?" Mike the Angel laughed. "You're not going to like it. I came down to get a dozen plastic-core resistors." "What size?" Mike told him, and Old Harry went over to the proper bin, pulled them out, all properly boxed, and handed them to him. "That'll be four dollars," he said. Mike the Angel paid up with a smile. "You don't happen to have a hundred-thousand-unit microcryotron stack, do you?" "Ain't s'posed to," said Harry MacDougal. "If I did, I wouldn't sell it to you. But, as a matter of cold fact, I do happen to have one. Use it for a paperweight. I'll give it to you for nothing, because it don't work, anyhow." "Maybe I can fix it," said Mike the Angel, "as long as you're giving it to me. How come it doesn't work?"