Mr. Waverly paused. "By the time we did so, the whole of the United States' monetary system would be in chaos—as would those of other countries. Financial anarchy will take over. The banknote paper, samples from France and their inks and dyes, are impervious to K.S.R.6. Our scientists are working all-out to break this formula and devise an antidote—either in the paper and printing processes or as a prophylactic solution. But we cannot wait for them. We believe Dr. Karadin took the better part of twenty years to create K.S.R.6. We haven't got much more than twenty hours.

"Already the reports are becoming more numerous. Security is as tight as a drum-skin. Not one leak to the press. All countries are cooperating—except certain ones whose interests are not ours. But there have been several cases of panic. In two small mid-West towns there was a run on the banks. One had to close its doors. And these areas, we believe, were merely sample areas, trial runs—like London's Carnaby Street, the Rue Rivoli in Paris, a casino in Monte Carlo, supermarkets in a hundred provincial towns.

"Mr. Kuryakin is in India. He reports five incidents. Mr. Solo is in Australia. He reports four incidents. A pattern is emerging. How many more testing and trial areas are to come? From whence is the major assault to be launched? We believe it is right here in the United States. With this country in financial chaos, the rest of the Western world will follow us into the abyss.

"Dr. Karadin is in this country—so is his daughter."

Mark grinned at April "Seems like someone else's Auntie boobed, me old darling."

"Auntie?" said Mr. Waverly. "Is that a joke, Mr. Slate?"

"A little-boy one," said April sweetly. "But it does contain a question as to how these two people were allowed into the country."

Mr. Waverly coughed gently. "Owing to the weakness of certain of my agents to play important international inquiries as they would play cards—close to their respective chests—we did not receive sufficient warning in time to alert all entry points. They did, in fact, enter by a devious route, quite openly, but with their passports stamped as arriving from Brazil. They now have disappeared."

"I had the feeling..." April began, then: "I'm sorry, sir, you were saying?"

"If I say I respect your feelings, that would not be what I mean. If on the other hand, your 'feeling' means one of your quite alarming and often accurate hunches—please go on, Miss Dancer."

She smiled. "Well, I don't have proof, but I do feel that the centers we found in England and France were gearing up, or had actually geared up, to a final phase. Tests and training were nearly complete. The K.S.R.6 solution—processed under a copy-system of the Parsimal Theory—could be produced by any competent junior laboratory assistant. The filling machine is so simple it could be worked by a child. The K.S.R.6 does not require elaborate buildings, nor any large storage capacity. Sizes of the containers vary from the size of a matchbox to a motor-bike oil tank, or a fire-extinguisher refill. In fact, the kitchen or basement of any normal dwelling could be a production unit. So I believe that all preliminary work was done in Europe, because although this country has vast open areas, our authorities are extremely alert to any place being used for any scientific purpose. Our people, generally, also are more alert to anything which might be operated against them. It is coincidence that Mr. Slate and I found these leads to Dartmoor and France—not forgetting our European contact men—at the time when Dr. Karadin and the higher echelons of his organization were almost ready to leave for America. It is here that the major effort will be made. Once under way, then Europe, Australia, India—all other areas—will be triggered off."

Mr. Waverly nodded. "I would agree with most of that, Miss Dancer. We all know how very difficult it will be to uncover centers which are in normal houses. But there must be some storage capacity beyond any you found in Europe, and surely to cover our big cities will require stockpiling of containers of K.S.R.6?—in warehouses or other large buildings?"

"April is right," said Mark. "There may be large numbers of operators engaged in the whole project, but small groups on fast little machines could zip through New York almost in a day, This K.S.R.6 stuff doesn't need to be pumped out by the gallon, does it?"

"No," said April "On a rainy day they would require surprisingly little. And we must remember that in many towns they may not need to be mobile. In fact, their agents may already be working on street signs, traffic lights, lamp posts—a whole host of ordinary dispersal points. These attachments—or even street signs containing them—can be put up by people who'd attract no attention, such as window cleaners, street-lighting maintenance men, sign erectors, painters."

"Whilst we are looking only for dollies in tin dresses?' said Mr. Waverly. "Or even men in metal suits?"

"They bother me," said Mark. "The rest of the K.S.R.6 plot is terrifyingly simple. Why complicate it by using such costumes? They're a dead give-away. We can surely round up every person wearing such clothes?"

"I think there are two good reasons," said April. "The first is technical. Continual exposure to the globules of K.S.R.6 at the time of dispersal—that is, before they vaporize—will cause severe dermatitis. A concentration of vapor will cause irritation and some peeling similar to sunburn. The second is that these suits protect all paper money."

"So do their wallets and purses," said Mark. "Why not use only those?"

"I think the third reason is largely psychological." April smiled. "In all massive demonstrations by power-seekers—as in justice—it must not only be done but be seen to be done. They expect us to react, and it will be difficult to avoid publicity. The witch hunt will be on. Every person in a metal suit will be grabbed off the street. But everyone's money will melt just as fast. You'll never stop the panic."

Mark nodded. "Because the stuff will be spraying all over them from street signs and other points. They'll carry it into the banks, shops, offices—their homes—and not know it."

Mr. Waverly said: "Part of the reports stress that areas with high rainfall—especially those subject to heavy mists and fogs—are ideal places for testing K.S.R.6. The atmospheric tolerance is an important factor."

"Yes," said April. "Part of that was in my report. Mist, fog and air moisture was the plus factor at Dartmoor. But they now have perfected K.S.R.6. Those conditions may not be so vital."

Mr. Waverly rose from his chair. "Let us go into the map room. Mr. Kovac has been given a small assignment. We will see what he can surprise us with." He rippled his pipe stem up the edges of the stacked files. "Nobody else has done so. We really must get rid of this mountain of paper work." He looked at Mark "Oh, by the way, Mr. Slate—isn't ten thousand francs a trifle excessive for local produce in France?"

"Well, sir, they produce banknote paper and—er—sleeping models in that part of the world."

"Ah! Quite so. We also have a claim for fifteen gallons of petrol, plus car hire from our British friends. I gather the mileage was something under a hundred. But perhaps we don't use the same route maps?"

"High-speed running," said April. "A very powerful car. My fault, I'm afraid. I ran the tank dry."

Mr. Waverly nodded sympathetically. "Yes, fast driving does run away with the gas. And Dr. Karadin wasn't courteous enough to pay for your lunch in the Post Office Tower restaurant?"