The burning hatred remained in her eyes, but there was a trace of doubt.
"Here," said Calhoun, "is my identification."
He showed her the highly official documents which gave him vast authority—where a planetary government was willing to concede it.
"Of course," he added, "papers can be stolen. But I have a witness that I'm what and who I say I am. You've heard of tormals? Murgatroyd will vouch for me."
He called his small and furry companion. Murgatroyd advanced and politely offered a small, prehensile paw. He said "Chee" in his shrill voice, and then solemnly took hold of the girl's wrist in imitation of Calhoun's previous action of feeling her pulse.
Calhoun watched. The girl stared at Murgatroyd. But all the galaxy had heard of tormals. They'd been found on a planet in the Deneb region, and they were engaging pets and displayed an extraordinary immunity to the diseases men were apt to scatter in their interstellar journeying. A forgotten Med Service researcher made an investigation of the ability of tormals to live in contact with men. He came up with a discovery which made them very much too valuable to have their lives wasted in mere sociability. There were still not enough of Murgatroyd's kind to meet the need that men had of them, and laymen had to forego their distinctly charming society. So Murgatroyd was an identification.
The girl said faintly, "If you'd only come earlier . . . but it's too late now. I—I thought you came from the city."
"I was headed there," said Calhoun.
"They'll kill you."
"Yes," agreed Calhoun, "they probably will. But right now you're ill and I'm Med Service. I suspect there's been an epidemic of some disease here, and that for some reason the people in the city don't want the Med Service to know about it. You seem to have it, whatever it is. Also, that was a very curious weapon you shot me with."
The girl said drearily, "One of our group had made a hobby of such things. Ancient weapons. He had bows and arrows and—what I shot you with was a crossbow. It doesn't need power. Not even chemical explosives. So when we ran away from the city, he ventured back in and armed us as well as he could."
Calhoun nodded. A little irrelevant talk is always useful at the beginning of a patient interview. But what she said was not irrelevant. A group of people had fled the city. They'd needed arms, and one of their number had gone back into the city for them. He'd known where to find reconstructions of ancient lethal devices—a hobby collection. It sounded like people of the civil service type. Of course there were no longer social classes separated by income. Not on most worlds, anyhow. But there were social groupings based on similar tastes, which had led to similar occupations and went on to natural congeniality. Calhoun placed her now. He remembered a long-outmoded term, "upper middle class," which no longer meant anything in economics but did in medicine.
"I'd like a case history," he said conversationally. "Name?"
"Helen Jons," she said wearily.
He held the mike of his pocket recorder to pick up her answers. Occupation: statistician. She'd been a member of the office force which was needed during the building of the city. When the construction work was finished, most of the workmen returned to the mother world Dettra, but the office staff stayed on to organize things when the colonists arrived.
"Hold it," said Calhoun. "You were a member of the office staff who stayed in the city to wait for the colonists. But a moment ago you said you fled from the city. There are still some people there, at least around the landing grid. I've reason to be sure of it. Were they part of the office staff too? If not, where did they come from?"
She shook her head weakly.
"Who are they?" he repeated.
"I don't know," she said drearily. "They came after the plague."
"Oh," said Calhoun. "Go on. When did the plague turn up? And how?"
She continued in a feeble voice. The plague appeared among the last shipload of workmen waiting to be returned to the mother world. There were then about a thousand people in the city, of all classes and occupations. The disease appeared first among those who tended the vast fields of planted crops.
It was well established before its existence was suspected. There were no obvious early symptoms, but those affected felt a loss of energy and they became listless and lackadaisical. The listlessness showed first in a cessation of griping and quarreling among the workmen. Norman, healthy human beings are aggressive. They squabble with each other as a matter of course. But squabbling ceased. Men hadn't the energy for it.
Shortness of breath appeared later. It wasn't obvious, at first. Men who lacked energy to squabble wouldn't exert themselves and so get out of breath. It was one of the medical staff who drove himself impatiently in spite of what he thought was a transient weariness, and discovered himself gasping without cause. He took a metabolism test, suspicious because the symptoms were so extreme. His metabolic rate was astonishingly low.
"Hold it again," commanded Calhoun. "You're a statistician, but you're talking medical talk. How's that?"
"Kim," the girl said tiredly. "He was on the medical staff. I was—I was going to marry him."
Calhoun nodded. "Go on."
She seemed to need to gather strength even to talk. She did not go on. Shortness of breath among the plague victims was progressive. Presently they gasped horribly from the exertion of getting to their feet, even. Walking, however slowly, could be done only at the cost of panting for breath. After a certain time they simply lay still. They could not summon the energy to stir. Then they sank into unconsciousness and died.
"What did the doctors think about all this?" demanded Calhoun.
"Kim could tell you," said the girl exhaustedly. "The doctors worked frantically. They tried everything—everything! They could get the symptoms in experimental animals, but they couldn't isolate the germ or whatever it was that caused the disease. Kim said they couldn't get a pure culture. It was incredible. No technique would isolate the cause of the symptoms, and yet the plague was contagious. Terribly so!"
Calhoun scowled. A new pathogenic mechanism was always possible, but it was at least unlikely. Still, something that standard bacteriological methods couldn't track down was definitely a job for the Med Service. But there were people in the city who didn't want the Med Service to interfere. The girl had referred to them once, when she spoke of a flight from the city, and again when she said someone ventured back for weapons. And she'd used a weapon on him, thinking him from the city. The description of the plague, too, was remarkable.
It was able to hide from men, which was something no other microorganism could accomplish. It was an ability that would offer no advantage to a disease germ in a state of purely natural happenings. Disease germs do not encounter bacteriological laboratories, as a rule, often enough to need to adapt to escape them. It would not help an average germ or microbe to be invisible to an electron microscope. There would be no reason for such invisibility to be developed.
But more than that, why should anybody want to keep a Med Service man like Calhoun from investigating a plague? When infected people fled from the city to die in the wilds, why should people remaining in the city try to destroy a Med Ship which might help to end the deaths? Ordinarily, well people in the middle of an epidemic are terrified lest they catch it. They'd be as anxious for Med Service help as those already infected. What was going on here?