The rockets bellowed. Then there was a tremendous noise to end all noises, and the ship began to climb. It sped up and up and up. By the time it was out of atmosphere it had velocity enough to coast to clear space and Calhoun cut the rockets altogether. He busied himself with those astrogational chores which began with orienting oneself to galactic directions after leaving a planet which rotates at its own individual speed. Then one computes the overdrive course to another planet, from the respective coÖrdinates of the world one is leaving and the one one aims for. Then,—in this case at any rate—there was the very finicky task of picking out a fourth-magnitude star of whose planets one was his destination. He aimed for it with ultra-fine precision.

"Overdrive coming," he said presently. "Hold on!"

Space reeled. There was nausea and giddiness and a horrible sensation of falling in a wildly unlikely spiral. Then stillness, and solidity, and the blackness of the Pit outside the Med Ship. The little craft was in overdrive again.

After a long while, the girl Maril said uneasily.

"I don't know what you plan now—."

"I'm going to Dara," said Calhoun. "On Orede I tried to get the blueskins there to get going, fast. Maybe I succeeded. I don't know. But this thing's been mishandled! Even if there's a famine, people shouldn't do things out of desperation!"

"I know now that I was—very foolish—."

"Forget it," commanded Calhoun. "I wasn't talking about you. Here I run into a situation that the Med Service should have caught and cleaned up generations ago! But it's not only a Med Service obligation, it's a current mess! Before I could begin to get at the basic problem, those idiots on Orede—. It'd happened before I reached Weald! An emotional explosion triggered by a ship full of dead men that nobody intended to kill."

Maril shook her head.

"Those Darian characters," said Calhoun annoyedly, "shouldn't have gone to Orede in the first place. If they went there, they should at least have stayed on a continent where there were no people from Weald digging a mine and hunting cattle for sport on their off days! They could be spotted! I believe they were! And again, if it had been a long way from the mine installation, they could probably have wiped out the people who sighted them before they could get back with the news! But it looks like miners saw men hunting, and got close enough to see they were blueskins, and then got back to the mine with the news!"

She waited for him to explain.

"I know I'm guessing, but it fits!" he said distastefully. "So something had to be done. Either the mining settlement had to be wiped out or the story that blueskins were on Orede had to be discredited. The blueskins tried for both. They used panic-gas on a herd of cattle and it made them crazy and they charged the settlement like the four-footed lunatics they are! And the blueskins used panic-gas on the settlement itself as the cattle went through. It should have settled the whole business nicely. After it was over every man in the settlement would believe he'd been out of his head for a while, and he'd have the crazy state of the settlement to think about, and he wouldn't be sure of what he'd seen or heard beforehand. They might try to verify the blueskin story later, but they wouldn't believe anything certainly! It should have worked!"

Again she waited. So Calhoun said very wrily indeed;

"Unfortunately, when the miners panicked, they stampeded into the ship. Also unfortunately, panic-gas got into the ship with them. So they stayed panicked while the astrogator—in panic!—took off and headed for Weald and threw on the overdrive—which would be set for Weald anyhow—because that would be the fastest way to run away from whatever he imagined he feared. But he and all the men on the ship were still crazy with panic from the gas they were re-breathing until they died!"

Silence. After a long interval, Maril asked;

"You don't think the—Darians intended to kill?"

"I think they were stupid!" said Calhoun angrily. "Somebody's always urging the police to use panic-gas in case of public tumult. But it's too dangerous. Nobody knows what one man will do in a panic. Take a hundred or two or three and panic them all, and there's no limit to their craziness! The whole thing was handled wrong!"

"But you don't blame them?"

"For being stupid, yes," said Calhoun fretfully. "But if I'd been in their place, perhaps ..."

"Where were you born?" asked Maril suddenly.

Calhoun jerked his head around. He said;

"No! Not where you're guessing—or hoping. Not on Dara. Just because I act as if Darians were human doesn't mean I have to be one! I'm a Med Service man, and I'm acting as I think I should." His tone became exasperated. "Dammit, I'm supposed to deal with health situations, actual and possible causes of human deaths! And if Weald thinks it finds proof that blueskins are in space again and caused the death of Wealdians it won't be healthy! They're halfway set anyhow to drop fusion-bombs on Dara to wipe it out!"

Maril said fiercely;

"They might as well drop bombs. It'll be quicker than starvation, at least!"

Calhoun looked at her more exasperatedly than before.

"It is a crop failure again?" he demanded. When she nodded he said bitterly; "Famine conditions already?" When she nodded again he said drearily; "And of course famine is the great-grandfather of health problems! And that's right in my lap with all the rest!"

He stood up. Then he sat down again.

"I'm tired!" he said flatly. "I'd like to get some sleep."

Maril understood. She picked up a book and went into the other cabin.

Alone in the control compartment, he tried to relax, but it was not possible. He flung himself into a comfortable chair and considered the situation of the people of the planet Dara. Those people were marked by patches of blue pigment as an inherited consequence of a plague of three generations past. Dara was a planet of pariahs, excluded from the human race by those who had been conditioned to fear them.

And now there was famine on Dara for the second time, and they were of no mind to starve quietly. There was food on the planet Orede, monstrous herds of cattle without owners. It was natural enough for Darians to build a ship or ships and try to bring food back to its starving people. But that desperately necessary enterprise had now roused Weald to a frenzy of apprehension. Weald was if possible more hysterically afraid of blueskins than ever before, and even more implacably the enemy of the starving planet's population. Weald itself throve and prospered. Ironically, it had such an excess of foodstuffs that it stored them in unneeded space-ships in orbits about itself. Hundreds of thousands of tons of grain circled Weald in sealed-tight hulks, while the people of Dara starved and only dared try to steal—it could be called stealing—some of the innumerable wild cattle of Orede.

The blueskins on Orede could not trust Calhoun, so they pretended not to hear—or maybe they didn't hear. They'd been abandoned and betrayed by all of humanity beyond their world. They'd been threatened and oppressed by guardships in orbit about them, ready to shoot down any space-craft they might send aloft.

So Calhoun pondered ...

A long time later Calhoun heard small sounds which were not normal on a Med Ship in overdrive. They were not part of the random noises carefully generated to keep the silence of the ship endurable. Calhoun raised his head. He listened sharply. No sound could come from outside.

He knocked on the door of the sleeping-cabin. The noises stopped instantly.

"Come out," he commanded through the door.

"I'm—I'm all right," said Maril's voice. But it was not quite steady. She paused. "I was just having a bad dream."

"I wish," said Calhoun, "that you'd tell me the truth occasionally! Come out, please!"

There were stirrings. After a little the door opened and Maril appeared. She looked as if she'd been crying. She said quickly;

"I probably look queer, but it's because I was asleep."

"To the contrary," said Calhoun, fuming, "you've been lying awake crying. I don't know why. I've been out here wishing I could sleep, because I'm frustrated. But since you aren't asleep maybe you can help me with my job. I've figured some things out. For some others I need facts. How about it?"

She swallowed.

"I'll try."

"Coffee?" he asked.

Murgatroyd popped his head out of his miniature sleeping-cabin.

"Chee?" he asked interestedly.

"Go back to sleep!" snapped Calhoun.

He began to pace back and forth.

"I need to know something about the pigment patches," he said jerkily. "Maybe it sounds crazy to think of such things now. First things first, you know. But that is a first thing! So long as Darians don't look like the people of other worlds, they'll be considered different. If they look repulsive, they'll be thought of as evil.... Tell me about those patches. They're different-sized and different-shaped and they appear in different places. You've none on your face or hands, anyhow."

"I haven't any at all," said the girl reservedly.

"I thought—"

"Not everybody," she said defensively. "Nearly, yes. But not all. Some people don't have them. Some people are born with bluish splotches on their skin, but they fade out while they're children. When they grow up they're just like—the people of Weald or any other world. And their children never have them."

Calhoun stared.

"You couldn't possibly be proved to be a Darian, then?"

She shook her head. Calhoun remembered, and started the coffee-maker.

"When you left Dara," he said, "You were carried a long, long way, to some planet where they'd practically never heard of Dara, and where the name meant nothing. You could have settled there, or anywhere else and forgotten about Dara. But you didn't. Why not, since you're not a blueskin?"

"But I am!" she said fiercely. "My parents, my brothers and sisters, and Korvan—."

Then she bit her lip. Calhoun took note but did not comment on the name that she had mentioned.

"Then your parents had the splotches fade, so you never had them," he said absorbedly. "Something like that happened on Tralee, once! There's a virus—a whole group of virus particles! Normally we humans are immune to them. One has to be in terrifically bad physical condition for them to take hold and produce whatever effects they do. But once they're established they're passed on from mother to child.... And when they die out it's during childhood, too!"

He poured coffee for the two of them. As usual, Murgatroyd swung down to the floor and said impatiently;

"Chee! Chee! Chee!"

Calhoun absently filled Murgatroyd's tiny cup and handed it to him.

"But this is marvellous!" he said exuberantly. "The blue patches appeared after the plague, didn't they? After people recovered—when they recovered?"

Maril stared at him. His mind was filled with strictly professional considerations. He was not talking to her as a person. She was purely a source of information.

"So I'm told," said Maril reservedly. "Are there any more humiliating questions you want to ask?"

He gaped at her. Then he said ruefully;

"I'm stupid, Maril, but you're touchy. There's nothing personal."

"There is to me!" she said fiercely. "I was born among blueskins, and they're of my blood, and they're hated and I'd have been killed on Weald if I'd been known as—what I am! And there's Korvan, who arranged for me to be sent away as a spy and advised me to do just what you said,—abandon my home world and everybody I care about! Including him! It's personal to me!"

Calhoun wrinkled his forehead helplessly.

"I'm sorry," he repeated, "Drink your coffee!"

"I don't want it," she said bitterly. "I'd like to die!"

"If you stay around where I am," Calhoun told her, "you may get your wish. All right. There'll be no more questions, I promise."

She turned and moved toward the door to the sleeping-cabin. Calhoun looked after her.

"Maril," he called out to her.

"What?"

"Why were you crying?"

"You wouldn't understand," she said evenly.

Calhoun shrugged his shoulders almost up to his ears. He was a professional man. In his profession he was not incompetent. But there is no profession in which a really competent man tries to understand women. Calhoun annoyedly had to let fate or chance or disaster take care of Maril's personal problems. He had larger matters to cope with.

But he had something to work on, now. He hunted busily in the reference tapes. He came up with an explicit collection of information on exactly the subject he needed. He left the control-room to go down into the storage areas of the Med Ship's hull. He found an ultra-frigid storage box, whose contents were kept at the temperature of liquid air. He donned thick gloves, used a special set of tongs, and extracted a tiny block of plastic in which a sealed-tight phial of glass was embedded. It frosted instantly he took it out, and when the storage-box was closed again the block was covered with a thick and opaque coating of frozen moisture.

He went back to the control-room and pulled down the panel which made available a small-scale but surprisingly adequate biological laboratory. He set the plastic block in a container which would raise it very, very gradually to a specific temperature and hold it there. It was, obviously, a living culture from which any imaginable quantity of the same culture could be bred. Calhoun set the apparatus with great exactitude.

"This," he told Murgatroyd, "may be a good day's work. Now I think I can rest."

Then, for a long while, there was no sound or movement in the Med Ship. The girl Maril may have slept, or maybe not. Calhoun lay relaxed in a chair which at the touch of a button became the most comfortable of sleeping-places. Murgatroyd remained in his cubbyhole, his tail curled over his nose. There were comforting, unheard, easily dismissable murmurings now and again. They kept the feeling of life alive in the ship. But for such infinitesimal stirrings of sound—carefully recorded for this exact purpose—the feel of the ship would have been that of a tomb.

But it was quite otherwise when another ship-day began with the taped sounds of morning activities as faint as echoes but nevertheless establishing an atmosphere of their own.

Calhoun examined the plastic block and its contents. He read the instruments which had cared for it while he slept. He put the block—no longer frosted—in the culture-microscope and saw its enclosed, infinitesimal particles of life in the process of multiplying on the food that had been frozen with them when they were reduced to the spore condition. He beamed. He replaced the block in the incubation oven and faced the day cheerfully.

Maril greeted him with great reserve. They breakfasted.

"I've been thinking," said Maril evenly. "I think I can get you a hearing for—whatever ideas you may have to help Dara."

"Kind of you," murmured Calhoun. "May I ask whose influence you'll exert?"

"There's a man," said Maril reservedly, "who—thinks a great deal of me. I don't know his present official position, but he was certain to become prominent. I'll tell him how you've acted up to now, and your attitude, and of course that you're Med Service. He'll be glad to help you, I'm sure."

"Splendid!" said Calhoun, nodding. "That will be Korvan."

She started.

"How did you know?"

"Intuition," said Calhoun drily. "All right. I'll count on him."

But he did not. He worked in the tiny biological lab all that ship-day and all the next. The girl remained quiet.

On the ship-day after, the time for breakfast approached. And while the ship was practically a world all by itself, it was easy to look forward with confidence to the future. But when contact and—in a fashion—conflict with other and larger worlds loomed nearer, prospects seemed less bright. Calhoun had definite plans, now, but there were so many ways in which they could be frustrated! Weald's political leaders could not oppose hysterical demands for action against blueskins, after a deathship arrived with no signs whatever of blueskins as responsible for its cargo of corpses. It was certain that a starving Dara would tend to desperate and fatal measures against hereditary enemies.

Calhoun sat down at the control-board and watched the clock.

"I've got things lined up," he told Maril wrily, "if only they work out. If I can make somebody on Dara listen and follow my advice and if Weald doesn't get ideas and isn't doing what I suspect it is, maybe something can be done."

"I'm sure you'll do your best," said Maril politely.

Calhoun managed to grin. He watched the ship-clock. There was no sensation attached to overdrive travel except at the beginning and the end. It was now time for the end. He might find that absolutely anything had happened while he made plans which would immediately be seen to be hopeless. Weald could have sent ships to Dara, or Dara might be in such a state of desperation that ...

As it turned out, Dara was desperate. The Med Ship came out nearly a light-month from the sun about which the planet Dara revolved. Calhoun went into a short hop toward it. Then Dara was on the other side of the blazing yellow star. It took time to reach it. He called down, identifying himself and the ship and asking for coÖrdinates so his ship could be brought to ground. There was confusion, as if the request were so unusual that the answers were not ready. The grid, too, was on the planet's night side. Presently the ship was locked onto by the grid's force-fields. It went downward without incident.

Calhoun saw that Maril sat tensely, twisting her fingers within each other, until the ship actually touched ground.

Then he opened the exit-port, and faced armed men in the darkness, with blast-rifles trained on him. There was a portable cannon trained on the Med Ship itself.

"Come out!" rasped a voice. "If you try anything you get blasted! Your ship and its contents are seized by the planetary government!"