"I'll need help. I provided the engineering and made the scale model for the trigger device, but others worked on the actual construction."

"I'll get you help. How long?"

Barrett gave him a bleak smile. "Seventy-two hours. Maybe."

"I think I heard you say thirty-six," Austin said. "How big will this device be?"

"Really big," Barrett said. "You saw the setup on the transmitter ship."

"Ouch," Austin said. His unshakable confidence wavered for a second, but his agile mind was already cranking into gear. "What do you do with this thing once you get it built?"

"It has to transmit electromagnetic waves covering roughly the same area as the polar shift." He shook his head. "We're going to have to figure out how to transport the neutralizer to the target area. Damn. I feel so responsible for this whole mess."

Despite Barrett's biker appearance, he had a fragile psyche. Austin saw that guilt was tearing the brilliant computer whiz apart, and if that happened he would be of no use.

"Then I can't think of anyone who would be better at cleaning it up. Leave the transportation to me. I've got an idea that might work."

He rose from his chair and put some bills down on the table for the beers. As they left the tavern, Austin saw Spider head toward his motorcycle and said, "Where are you going?"

"To ride my bike."

"I'll have someone pick it up," Austin said, taking him by the arm. "Too dangerous."

Karla grabbed Barrett by the other arm, and they steered him to the Jeep. On the way back to Washington, Austin got on his cell phone, called Zavala and said he had an important job for him to do.

"I'll get right on it," Zavala said after hearing the details. "I talked to the Trouts. Good news. They traced the transmitter ship to Rio via satellite and are on their way."

Less than an hour later, Austin pulled into the NUMA parking garage with Barrett and Karla and they took the elevator to the third floor. The corridors were silent and dark except for a shaft of light coming from the study next to the conference room. Zavala had brought Hibbet in as Austin had requested.

Austin said, "Thanks for coming, Alan. Sorry for yanking you here a second time, but we need your help."

"I meant it when I told you to call night or day if you needed me. Is there anything new since we talked the last time?"

"We've confirmed that the whirlpool and giant waves were side effects of an experiment in causing a polar reversal. And that the magnetic reversal could trigger a geologic reversal with catastrophic implications for the world."

Hibbet's face turned ashen. "Is there any way to stop this from happening?"

Austin's lips tightened in a thin smile. "I'm hoping that you can tell us."

"Me? I don't understand."

"This is Spider Barrett," Austin said. "He designed the mechanism to trigger a polar reversal."

Hibbet glanced at the sad-faced Barrett and his tattooed head. He'd been around long enough to know that the sciences attracted its share of oddballs. He extended his hand. "Brilliant work."

Barrett beamed at the professional recognition. "Thanks."

Austin sensed an instant synergy between the two men. "We want you to work with Spider, Joe and Karla to build an antenna capable of neutralizing the low-level electromagnetic waves that are being used to create a polar shift."

"Building the antenna won't be a problem. It's nothing but metal and wire. But you could use it to hang laundry, for all the good it would do without the correct frequencies that would act to buffer those being used to stir things up."

Karla smiled and slipped a folded sheet of paper from her blouse. Using infinite care, she unfolded the paper and slid it across the table to Hibbet. He picked the napkin up and frowned as he read the equation written on it. Then the light of understanding dawned in his eyes.

"Where did you get this?" he said in a whisper.

"My grandfather," Karla said.

"Karla's grandfather was Lazlo Kovacs," Austin said. "He encoded his work before he passed it down. Thanks to Spider, we've figured it out. Now that we've done all the hard work, can you build us an antenna?"

"Yes," Hibbet said. "At least, I think I can."

"That's good enough for us. Tell us what you need. You've got all the resources of the U.S. government behind you."

Hibbet laughed and shook his head. "That's a lot better than dealing with the NUMA bean counters. You don't know the trouble I've had trying to buy experimental equipment." He paused in thought. "Even if I can whip something together, we'll still need a platform to carry it to where it would do the most good."

"How big would this contraption be?" Austin said.

"Big," Hibbet said. "Then you'd need the generators to power the antenna. And a way to transport something that weighs tons."

"That's the bad news," Austin said.

"What's the good news?" asked Hibbet.

Austin grinned. "Necessity is the mother of invention."

The phone rang just then and Austin picked it up. Pitt must have pulled some major strings. The Pentagon was sending a car over to pick him up.

The earth seemed to be on fire in a hundred different places. Volcanoes erupted like a virulent disease, spewing forth huge, glowing lava fields whose smoke cast a thick pall over the planet. Wind storms of unimaginable power whipped the massive cloud into twisting vortexes that ranged across continents. Tsunamis slammed into the North American coastline on the east and the west and created a narrow continent squeezed by two angry oceans.

Then the image of the ravaged planet disappeared. The large screen in the Pentagon screening room went blank. Lights that had been dimmed for the presentation went back on, to reveal Austin and the stunned faces of a dozen or so military brass and political people who were sitting around a long conference table.

"The computer simulation you just saw was prepared by Dr. Paul Trout, a computer graphics expert at NUMA," Austin said. "It presents a reasonably accurate picture of the consequences of a geologic polar shift."

A four-star general sitting across from Austin said, "I would be the first to admit that was a frightening picture, if it's true. But as you say, it's a computer simulation, and could just as well be based on imagination as fact."

"I wish it were imagination, General. We didn't have time to prepare a written summary, so you'll have to bear with me while I lay out the main points of what we're dealing with here. The first link in the chain of events that led to this meeting was forged more than sixty years ago with the work of a brilliant electrical engineer named Lazlo Kovacs."

For more than an hour, Austin laid out the timeline, touching on Tesla, Kovacs's escape from East Prussia and the electromagnetic warfare experiments conducted by the U.S. and the Soviets. He described his meeting with Barrett, the man who had translated the theorems into reality, the ship-sinking ocean disturbances and the plans to initiate a polar shift. Austin was aware of the fantastic nature of his story, so he left out a few details. Had he not seen them with his eyes he would never have believed in the existence of dwarf mammoths in a crystal city locked in an ancient volcano.

Even without the more unbelievable details, he faced a wall of skepticism. Austin made his case with the skill of a powerhouse attorney talking to a jury, but he knew he would be peppered with questions. An assistant secretary representing the Department of Defense cut Austin short when he was describing Jordan Gant's involvement with Margrave.