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Polar Shift (NUMA Files 6)

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"The new North Pole," Gant said.

Margrave laughed. "I can't wait to see the faces on the leading Elites when they discover that Lucifer's warnings had some teeth to them."

Gant spread his lips in his warmest smile. He couldn't wait to see Margrave's face when he learned that all the work and fortune he had put into the polar shift project would benefit the very Elites that he despised.

38

Barrett sat in a quiet corner table of the dark-beamed taproom of the Leesburg country tavern. He was scribbling madly on a napkin, his head bent low over his work. The table was covered with dozens of crumpled napkins. An untouched mug of beer sat by his right elbow. He was oblivious to the glances the other customers were casting at the spider decorating his bald pate.

Austin and Karla sat at the table. Sensing that he had company, Barrett looked up with a faraway look in his eyes. He grinned when he saw their faces.

"You don't know how glad I am to see you. I'm about ready to explode."

"Please don't do that just yet," Austin said. He asked Karla what she wanted to drink and ordered two black and tans, a combination of Guinness and lager.

Racing around the Virginia countryside in an open car had made them thirsty. When the beers came, Austin slugged down half of his, and Karla blissfully buried her nose in the foamy head.

Before heading off to meet Barrett, Austin had given Pitt an update on the polar

shift situation. Pitt had said he would call Sandecker, who was returning the next day from a diplomatic trip, and set up a briefing with the president when he got back from a tour inspecting tornado damage in the Midwest. In the meantime, he wanted Austin to meet with the Pentagon. As an added bonus, he gave Austin carte blanche with NUMA's vast resources.

"Sorry to take so long," Austin said, savoring the cool brew that trickled down his throat. "We came as soon as we could. There was background noise when you called, and I'm not sure I understood you correctly," Austin said. "You said something about the nursery rhyme, but I didn't get the rest."

"After you left for Manassas, I started fooling around with Karla's bedtime rhyme. The title, 'Topsy-Turvy,' and some of the lines fit in with what we know about polar shift. It seemed too close to be coincidental."

"I've found that few things are coincidental," Austin said. "However, it's a coincidence that I'm still thirsty and there's an untouched beer on the table."

"I'm too cranked up to drink." Barrett shoved the beer across to Austin, who shared half of it with Karla.

"We were talking about coincidences," Austin said.

Barrett nodded. "Kovacs was an amateur cryptologist. I started with the premise that the rhyme might be a cipher. I guessed that the topsy-turvy couplets were simply 'nulls'-letters or words placed in a cipher to confuse-so I put them aside and stuck with the main body of the verse. A cipher is different from a code, which usually requires a codebook to make the translation. To unlock a cipher, you have to have a key, which is included in the message itself. One phrase jumped out immediately."

"The key is in the door," Karla said without thinking.

"That's the one! It seemed obvious, almost too obvious," Barrett said, "but Kovacs was a scientist who would have been obsessed with precision. It would have been more precise for him to have said that the key is in the lock."

"The key was in the word door itself," Austin said.

"That was my thinking," Barrett said. "Door became my key word. You have to look at code breaking in a couple of ways. At one level, you're dealing with the mechanics of things, such as word or letter transpositions and substitutions. At another level, you're looking at the meaning of things." Seeing his explanation greeted with blank looks, he said, "What does a door do?"

"That's easy," Karla said. "It separates one room from another. You have to open and close it to pass through."

"Correct," Barrett said. "The word's opening letter is D."

He grabbed a clean napkin and with his ballpoint pen wrote:

DEFGHIJKLMNOPQRSTUVWXYZ

ABC

"This sets the pattern of letters for the plain alphabet. I took the last letter in door and used it in the same configuration for the cipher alphabet."

"Let me try," Karla said. Taking the pen, she wrote:

RSTUVWXYZABCDEFGHIJKLMN

OPQ



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