CALIPHATE(51)

Mary's finger moved to the next photo. That one was tall and slender, but bald, and almost unbelievably ugly. "Dr. Guillaume Sands. Ph.D. Biochemistry. Also disappeared. Also from Atlanta."

"Also via Montreal," Caruthers added, "which he was from, as a matter of fact. Just goes to show we still can't trust the Frogs."

Her finger lingered over the last picture for a moment, an especially nerdy looking character, before she said, "Dr. John Johnston IV. Epidemiology. Same story. I actually know this one, personally. Rude, arrogant bastard."

"Microbiology, biochemistry, and epidemiology? Why don't I like the sound of that?"

"Nobody likes the sound of that, John," Caruthers said.

"Okay . . . they disappeared. Where to?"

It was Caruthers' turn to show a picture, this one a high-definition satellite photo. "Here, we think." The three scientists disappeared to be replaced by a much larger view of two mountain-girt, snow- covered castles. One of these had a prominent, golden dome apparently grafted on as an afterthought. Certainly it didn't fit the architecture of the whole.

"The Caliphate? You want me to go inside the Caliphate? That's suicidal."

"For you or for them? Oh, never mind, we'll get to 'suicidal' later. Let me assure you, though, that the move has not been suicidal for them; quite the opposite."

"Let me understand;" Hamilton said, "we are talking about some kind of biological warfare agent being developed by the Caliphate to attack us?"

"More to counterattack us, we think," offered Mary.

Hamilton cocked his head to one side, quizzically. "Counter- attack?"

"It should be obvious to you, John," Caruthers said, "that we've pretty much cleaned up our Moslem problems around the periphery. There are effectively none openly left in North or South America. The last of the Pacific islands that are of interest to us were cleared in the campaign you participated in, in the Philippines. Africa south of the Sahara has few that are not enslaved and none that are not oppressed. Japan and China—Australia, too—exterminated or drove out theirs long ago. Except for infiltrators coming across from the European Caliphate, and the odd group of raiders from the other Caliphate, those left in the Russian Empire are illiterate serfs, bound to the land. The traditional Moslem lands . . . the grandly named Caliphate of Islam, Triumphant, is a virtual wasteland. And Israel finally learned the lessons Himmler and Eichmann sought to teach, as well.

"All that's left is Europe. It's only a matter of time before we undertake Reconquista there, too."

Hamilton gestured with a hand, palm up, and a one-shouldered shrug. "Yes, all that's obvious enough. Tell me something new."

"They're not going to take the loss of their last worthwhile homeland lightly. If necessary, they'll destroy the world before turning it all over to us. We would do the same."

"I still don't—"

"They can build nukes and, more or less, maintain them. They've still got a huge, if decreasing, number of dhimmis to keep some poor semblance of a modern society going. They have never—so far as we can tell, and our intel on this is good—been able to develop a delivery system capable of getting through our defenses. Since we don't permit them travel, and we don't permit them freedom of the seas, and we do sink any ships or subs they launch on sight, they've got no effective way to bomb us."

"Introducing diseases, however," Mary interrupted, "they could probably do. They're much lighter, much more easily transported, and potentially much deadlier."

"We think, John," Caruthers said, "that they've enticed those three men over precisely to develop for them a superbug."

"And I'm supposed to find out if they are?"

"No. We can't take any chances on this. Your job will be to kill or capture them before they can. Actually, that's not strong enough. John, you need to kill or capture them and destroy their facility no matter what it takes or what it costs."

"Why me? I'm new . . . barely wet behind the ears as you've never ceased to tell me."

"Language aptitude, military background, biochemistry degree," answered Caruthers, simply enough.

"John," Mary added, "let me tell you about something that makes this so important that no level of violence is too much. No . . . first, let me ask you how much you know about disease?"

"What any biochemistry major would, I suppose," Hamilton answered.

"That may not be enough," Mary said, unconsciously wringing her hands. "I'll give you the quick version. There are several reasons why the human race has survived epidemics and pandemics, but the biggest are these: The strongest strains of any given disease kill quickest and do not spread so readily. The weakest do spread, and the weaker they are the more and the faster, overall, they can spread. Therefore, diseases tend to spread immunity before them because once you've survived the weaker strain, you are very likely to be highly resistant to the stronger. Secondly, the human body is capable of dealing with a very wide range of diseases. But it has to know that it is under attack. A truly new disease is very difficult for the immune system to deal with because it doesn't recognize it as a disease. Thirdly, and related to the other two, the ideal disease, from a weapons point of view, is spread via air, has a very long time it can be communicated between initial infection and onset of serious symptoms, enters a stage where it could not be communicated, and then kills more or less quickly, dying out itself. Fourthly, an ideal disease would not mutate and would exempt one's own population. We think that such a disease can be created from scratch. We know that if any group of three men can do it, these three can."