Polar Shift

couldn't stop.'

'We didn't take the Kovacs Theorems at face value. We've run the computer models dozens of times. The waves and vortexes along the edge of the target will spin outward. We don't think there is much shipping in the area, but collateral damage is sometimes unavoidable in any great enterprise.'

'Our compasses will change immediately?'

'That's our estimate. Our navigation equipment will be recalibrated just before we start the reversal and will work off our shielded satellites.' He offered his most satanic grin. 'We'll be the only ship in the world able to navigate. Should be quite the mess out there.'

'Tell me more about the target area,' Gant said.

'You can see it up there on the screen. Our friend the South Atlantic Anomaly. As I've explained before, it's essentially a 'dip' in the magnetosphere where there is less natural shielding.' He pointed to an intersection where lines of latitude and longitude crossed. 'About three hundred miles off the coast of Brazil is this area of weakest polarity, where a natural polar shift would occur.'

'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

'I'm buying you a ticket to Bletchley Park,' Barrett said, referring to the British code-breaking headquarters during World War II.

'Using the alphabets to write the word message, you'd still get gibberish.' Karla stared at the word with disappointment in her eyes.

'Your grandfather didn't want to make it too easy. I came up with the same result. Then I went back to the key word. D and R are four spaces apart in the word door. I wrote down every fourth word in the main verse, but my gut feeling told me that it was too much. So I tried every fourth letter. Still nothing I could sink my teeth in. Then I thought, D and R are fifteen letters apart in the alphabet. I used that formula in the poem and picked out every fifteenth word. Then I used the plain and cipher alphabets to attempt the cryptanalysis. Are you still with me?'

'No,' Austin said.

'Yeah, that's what happened to me too,' Barrett said with a grin. 'So I cheated. I ran the whole bloody mess through a computer.' He reached into his jacket pocket and produced a computer printout. 'This is what I got.'

'A mishmash of vowels and consonants, but no words,' Karla said.

'I tried everything. I called up an MIT professor who spoke Hungarian and ran it by him. No go. Then I remembered Kovacs spoke Romanian, and called up a guy who runs the Transylvania Restaurant back in Seattle. He couldn't make heads nor tails of it. I would have torn my hair out, if I had any. I went back to the words that I had discarded, particularly turvy-topsy. I thought maybe it applied to what I was doing.'

'How could you turn the message upside down?' Karla said with skepticism.

'I couldn't. But I could interpret the words loosely, and run it backward, like the second line of the poem. Which is what I did.

Still didn't make sense. Then I had an epiphany. As I rode around on my bike, I realized that it wasn't supposed to be words. It was exactly what it was, a string of letters, more or less. Once I jumped that hurdle, I figured that there were numbers in the message as well. Back to the computer. Certain