explosion of compounded insanity to an extent which would be inconceivable without such an outside agent. As we saw in Graylock, the condition is in fact impossible to describe or imagine! A diabolical device...."

He frowned. "Why the drug kwil counteracts such an effect remains unclear. But since we now know that it does, I may have a solution to the problem confronting us."

Dasinger nodded. "Let's hear it."

"Have Miss Mines bring the ship down immediately," Egavine instructed him. "There is a definite probability that among my medical supplies will be an effective substitute for kwil, for this particular purpose. A few hours of experimentation, and ..."

"Doctor," Dasinger interrupted, "hold it right there! So far there's been no real harm in sparring around. But we're in a different situation now ... we may be running out of time very quickly. Let's quit playing games."

Dr. Egavine glanced sharply across at him. "What do you mean?"

"I mean that we both have kwil, of course. There's no reason to experiment. But the fact that we have it is no guarantee that we'll be able to get near that generator. Leed Farous's tissues were soaked with the drug. Graylock's outfit had weeks to determine how much each of them needed to be able to operate within range of the machines and stay sane. We're likely to have trouble enough without trying to jockey each other."

Dr. Egavine cleared his throat. "But I ..."

Dasinger interrupted again. "Your reluctance to tell me everything you knew or had guessed is understandable. You had no more reason to trust me completely than I had to trust you. So before you say anything else I'd like you to look at these credentials. You're familiar with the Federation seal, I think."

Dr. Egavine took the proffered identification case, glanced at Dasinger again, then opened the case.

"So," he said presently. "You're a detective working for the Dosey Asteroids Company...." His voice was even. "That alters the situation, of course. Why didn't you tell me this?"

"That should be obvious," Dasinger said. "If you're an honest man, the fact can make no difference. The company remains legally bound to pay out the salvage fee for the star hyacinths. They have no objection to that. What they didn't like was the possibility of having the gems stolen for the second time. If that's what you had in mind, you wouldn't, of course, have led an agent of the company here. In other words, doctor, in cooperating with me you're running no risk of being cheated out of your half of the salvage rights."

Dasinger patted the gun in his coat pocket. "And of course," he added, "if I happened to be a bandit in spite of the credentials, I'd be eliminating you from the partnership right now instead of talking to you! The fact that I'm not doing it should be a sufficient guarantee that I don't intend to do it."

Dr. Egavine nodded. "I'm aware of the point."

"Then let's get on with the salvage," Dasinger said. "For your further information, there's an armed Fleet ship hunting for us with piratical intentions, and the probability is that it will find us in a matter of hours...."

He described the situation briefly, concluded, "You've carried out your part of the contract by directing us here. You can, if you wish, minimize further personal risks by using the Fleet scout's lifeboat to get yourself and Quist off the planet, providing kwil will get you to the scout. Set a normspace course for Orado then, and we'll pick you up after we've finished the job."

Dr. Egavine shook his head. "Thank you, but I'm staying. It's in my interest to give you what assistance I can ... and, as you've surmised, I do have a supply of kwil. What is your plan?"

"Getting Hovig's generator shut off is the first step," Dasinger said. "And since we don't know what dosage of the drug is required for each of us, we'd be asking for trouble by approaching the Antares in the ship. Miss Mines happens to be a kwil-sensitive, in any case. So it's going to take hiking, and I'll start down immediately now. Would Graylock and the Fleetmen obey hypnotic orders to the extent of helping out dependably in the salvage work?"

Egavine nodded. "There is no question of that."

"Then you might start conditioning them to the idea now. From the outer appearance of the Antares, it may be a real job to cut through inside her to get to the star hyacinths. We have the three salvage suits. If I can make it to the generator, shut it off, and it turns out then that I need some hypnotized brawn down there, Miss Mines will fly over the shelter as a signal to start marching the men down."

"Why march? At that point, Miss Mines could take us to the wreck within seconds."

Dasinger shook his head. "Sorry, doctor. Nobody but Miss Mines or myself goes aboard the Mooncat until we either wind up the job or are forced to clear out and run. I'm afraid that's one precaution I'll have to take. When you get to the Antares we'll give each of the boys a full shot of kwil. The ones that don't go limp on it can start helping."

Dr. Egavine said reflectively, "You feel the drug would still be a requirement?"

"Well," Dasinger said, "Hovig appears to have been a man who took precautions, too. We know he had three generators and that he set off one of them. The question is where the other two are. It wouldn't be so very surprising, would it, if one or both of them turned out to be waiting for intruders in the vault where he sealed away the loot?"

The night was cool. Wind rustled in the ground vegetation and the occasional patches of trees. Otherwise the slopes were quiet. The sky was covered with cloud layers through which the Mooncat drifted invisibly. In the infrared glasses Dasinger had slipped on when he started, the rocky hillside showed clear for two hundred yards, tinted green as though bathed by a strange moonlight; beyond was murky darkness.

"Still all right?" Duomart's voice inquired from the wrist communicator.

"Uh-huh!" Dasinger said. "A little nervous, but I'd be feeling that way in any case, under the circumstances."

"I'm not so sure," she said. "You've gone past the two and a half mile line from the generator. From what that Graylock monster said, you should have started to pick up its effects. Why not take your shot, and play safe?"

"No," Dasinger said. "If I wait until I feel something that can be definitely attributed to the machine, I can keep the kwil dose down to what I need. I don't want to load myself up with the drug any more than I have to."

A stand of tall trees with furry trunks moved presently into range of the glasses, thick undergrowth beneath. Dasinger picked his way through the thickets with some caution. The indications so far had been that local animals had as much good reason to avoid the vicinity of Hovig's machine as human beings, but if there was any poisonous vermin in the area this would be a good place for it to be lurking. Which seemed a fairly reasonable apprehension. Other, equally definite, apprehensions looked less reasonable when considered objectively. If he stumbled on a stone, it produced a surge of sharp alarm which lingered for seconds; and his breathing had quickened much more than could be accounted for by the exertions of the downhill climb.

Five minutes beyond the wood Dasinger emerged from the mouth of a narrow gorge, and stopped short with a startled exclamation. His hand dug hurriedly into his pocket for the case of kwil needles.

"What's the matter?" Duomart inquired sharply.

Dasinger produced a somewhat breathless laugh. "I've decided to take the kwil. At once!"

"You're feeling ... things?" Her voice was also shaky.

"I'll say! Not just a matter of feeling it, either. For example, a couple of old friends are walking towards me at the moment. Dead ones, as it happens."

"Ugh!" she said faintly. "Hurry up!"