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　Susan gazed vaguely toward TRANSLTR. She knew that trapped within the ceramic shell, a fireball was racing toward them. She sensed it rising faster and faster, feeding on the oxygen released by the burning chips. In moments the Crypto dome would be a blazing inferno.

　Susan's mind told her to run, but David's dead weight pressed down all around her. She thought she heard his voice calling to her, telling her to escape, but there was nowhere to go. Crypto was a sealed tomb. It didn't matter; the thought of death did not frighten her. Death would stop the pain. She would be with David.

　The Crypto floor began to tremble, as if below it an angry sea monster were rising out of the depths. David's voice seemed to be calling. Run, Susan! Run!

　Strathmore was moving toward her now, his face a distant memory. His cool gray eyes were lifeless. The patriot who had lived in her mind a hero had died--a murderer. His arms were suddenly around her again, clutching desperately. He kissed her cheeks. "Forgive me," he begged. Susan tried to pull away, but Strathmore held on.

　TRANSLTR began vibrating like a missile preparing to launch. The Crypto floor began to shake. Strathmore held tighter. "Hold me, Susan. I need you."

　A violent surge of fury filled Susan's limbs. David's voice called out again. I love you! Escape! In a sudden burst of energy, Susan tore free. The roar from TRANSLTR became deafening. The fire was at the silo's peak. TRANSLTR groaned, straining at its seams.

　David's voice seemed to lift Susan, guide her. She dashed across the Crypto floor and started up Strathmore's catwalk stairs. Behind her, TRANSLTR let out a deafening roar.

　As the last of the silicon chips disintegrated, a tremendous updraft of heat tore through the upper casing of the silo and sent shards of ceramic thirty feet into the air. Instantly the oxygen-rich air of Crypto rushed in to fill the enormous vacuum.

　Susan reached the upper landing and grabbed the banister when the tremendous rush of wind ripped at her body. It spun her around in time to see the deputy director of operations, far below, staring up at her from beside TRANSLTR. There was a storm raging all around him, and yet there was peace in his eyes. His lips parted, and he mouthed his final word. "Susan."

　The air rushing into TRANSLTR ignited on contact. In a brilliant flash of light, Commander Trevor Strathmore passed from man, to silhouette, to legend.

　When the blast hit Susan, it blew her back fifteen feet into Strathmore's office. All she remembered was a searing heat.

　CHAPTER?106

　In the window of the Director's conference room, high above the Crypto dome, three faces appeared, breathless. The explosion had shaken the entire NSA complex. Leland Fontaine, Chad Brinkerhoff, and Midge Milken all stared out in silent horror.

　Seventy feet below, the Crypto dome was blazing. The polycarbonate roof was still intact, but beneath the transparent shell, a fire raged. Black smoke swirled like fog inside the dome.

　The three stared down without a word. The spectacle had an eerie grandeur to it.

　Fontaine stood a long moment. He finally spoke, his voice faint but unwavering. "Midge, get a crew down there... now."

　Across the suite, Fontaine's phone began to ring.

　It was Jabba.

　CHAPTER?107

　Susan had no idea how much time had passed. A burning in her throat pulled her to her senses. Disoriented, she studied her surroundings. She was on a carpet behind a desk. The only light in the room was a strange orange flickering. The air smelled of burning plastic. The room she was standing in was not really a room at all; it was a devastated shell. The curtains were on fire, and the Plexiglas walls were smoldering.

　Then she remembered it all.

　David.

　In a rising panic, she pulled herself to her feet. The air felt caustic in her windpipe. She stumbled to the doorway looking for away out. As she crossed the threshold, her leg swung out over an abyss; she grabbed the door frame just in time. The catwalk had disappeared. Fifty feet below was a twisted collapse of steaming metal. Susan scanned the Crypto floor in horror. It was a sea of fire. The melted remains of three million silicon chips had erupted from TRANSLTR like lava. Thick, acrid smoke billowed upward. Susan knew the smell. Silicon smoke. Deadly poison.

　Retreating into the remains of Strathmore's office, she began to feel faint. Her throat burned. The entire place was filled with a fiery light. Crypto was dying. So will I, she thought.

　For a moment, she considered the only possible exit--Strathmore's elevator. But she knew it was useless; the electronics never would have survived the blast.

　But as Susan made her way through the thickening smoke, she recalled Hale's words. The elevator runs on power from the main building! I've seen the schematics! Susan knew that was true. She also knew the entire shaft was encased in reinforced concrete.

　The fumes swirled all around her. She stumbled through the smoke toward the elevator door. But when she got there, she saw that the elevator's call button was dark. Susan jabbed fruitlessly at the darkened panel, then she fell to her knees and pounded on the door.

　She stopped almost instantly. Something was whirring behind the doors. Startled, she looked up. It sounded like the carriage was right there! Susan stabbed at the button again. Again, a whirring behind the doors.

　Suddenly she saw it.

　The call button was not dead--it had just been covered withblack soot. It now glowed faintly beneath her smudged fingerprints.

　There's power!

　With a surge of hope, she punched at the button. Over and over, something behind the doors engaged. She could hear the ventilation fan in the elevator car. The carriage is here! Why won't the damn doors open?

　Through the smoke she spied the tiny secondary keypad--lettered buttons, A through Z. In a wave of despair, Susan remembered. The password.

　The smoke was starting to curl in through the melted window frames. Again she banged on the elevator doors. They refused to open. The password! she thought. Strathmore never told me the password! Silicon smoke was now filling the office. Choking, Susan fell against the elevator in defeat. The ventilation fan was running just a few feet away. She lay there, dazed, gulping for air.

　She closed her eyes, but again David's voice woke her. Escape, Susan! Open the door! Escape! She opened her eyes expecting to see his face, those wild green eyes, that playful smile. But the letters A–Z came into focus. The password... Susan stared at the letters on the keypad. She could barely keep them in focus. On the LED below the keypad, five empty spots awaited entry. A five-character password, she thought. She instantly knew the odds: twenty-six to the fifth power; 11,881,376 possible choices. At one guess every second, it would take nineteen weeks...

　As Susan Fletcher lay choking on the floor beneath the keypad, the commander's pathetic voice came to her. He was calling to her again. I love you Susan! I've always loved you! Susan! Susan! Susan...

　She knew he was dead, and yet his voice was relentless. She heard her name over and over.

　Susan... Susan...

　Then, in a moment of chilling clarity, she knew.

　Trembling weakly, she reached up to the keypad and typed the password.

　S... U... S... A... N

　An instant later, the doors slid open.

　CHAPTER?108

　Strathmore's elevator dropped fast. Inside the carriage, Susan sucked deep breaths of fresh air into her lungs. Dazed, she steadied herself against the wall as the car slowed to a stop. A moment later some gears clicked, and the conveyor began moving again, this time horizontally. Susan felt the carriage accelerate as it began rumbling toward the main NSA complex. Finally it whirred to a stop, and the doors opened.

　Coughing, Susan Fletcher stumbled into a darkened cement corridor. She found herself in a tunnel--low-ceilinged and narrow. A double yellow line stretched out before her. The line disappeared into an empty, dark hollow.

　The Underground Highway...

　She staggered toward the tunnel, holding the wall for guidance. Behind her, the elevator door slid shut. Once again Susan Fletcher was plunged into darkness.

　Silence.

　Nothing except a faint humming in the walls.

　A humming that grew louder.

　Suddenly it was as if dawn were breaking. The blackness thinned to a hazy gray. The walls of the tunnel began to take shape. All at once, a small vehicle whipped around the corner, its headlight blinding her. Susan stumbled back against the wall and shielded her eyes. There was a gust of air, and the transport whipped past.

　An instant later there was a deafening squeal of rubber on cement. The hum approached once again, this time in reverse. Seconds later the vehicle came to a stop beside her.

　"Ms. Fletcher!" an astonished voice exclaimed.

　Susan gazed at a vaguely familiar shape in the driver's seat of an electric golf cart.

　"Jesus." The man gasped. "Are you okay? We thought you were dead!"

　Susan stared blankly.

　"Chad Brinkerhoff," he sputtered, studying the shellshocked cryptographer. "Directorial PA."

　Susan could only manage a dazed whimper. "TRANSLTR..."

　Brinkerhoff nodded. "Forget it. Get on!"

　* * *

　The beam of the golf cart's headlights whipped across the cement walls.

　"There's a virus in the main databank," Brinkerhoff blurted.

　"I know," Susan heard herself whisper.

　"We need you to help us."

　Susan was fighting back the tears. "Strathmore... he..."

　"We know," Brinkerhoff said. "He bypassed Gauntlet."

　"Yes... and..." The words got stuck in her throat. He killed David!

　Brinkerhoff put a hand on her shoulder. "Almost there, Ms. Fletcher. Just hold on."

　* * *

　The high-speed Kensington golf cart rounded a corner and skidded to a stop. Beside them, branching off perpendicular to the tunnel, was a hallway, dimly lit by red floor lighting.

　"Come on," Brinkerhoff said, helping her out.

　He guided her into the corridor. Susan drifted behind him in a fog. The tiled passageway sloped downward at a steep incline. Susan grabbed the handrail and followed Brinkerhoff down. The air began to grow cooler. They continued their descent.

　As they dropped deeper into the earth, the tunnel narrowed. From somewhere behind them came the echo of footsteps--a strong, purposeful gait. The footsteps grew louder. Both Brinkerhoff and Susan stopped and turned.

　Striding toward them was an enormous black man. Susan had never seen him before. As he approached, he fixed her with a penetrating stare.

　"Who's this?" he demanded.

　"Susan Fletcher," Brinkerhoff replied.

　The enormous man arched his eyebrows. Even sooty and soaked, Susan Fletcher was more striking than he had imagined. "And the commander?" he demanded.

　Brinkerhoff shook his head.

　The man said nothing. He stared off a moment. Then he turned back to Susan. "Leland Fontaine," he said, offering her his hand. "Glad you're okay."

　Susan stared. She'd always known she'd meet the director someday, but this was not the introduction she'd envisioned.

　"Come along, Ms. Fletcher," Fontaine said, leading the way. "We'll need all the help we can get."

　* * *

　Looming in the reddish haze at the bottom of the tunnel, a steel wall blocked their way. Fontaine approached and typed an entry code into a recessed cipher box. He then placed his right hand against a small glass panel. A strobe flashed. A moment later the massive wall thundered left.

　There was only one NSA chamber more sacred than Crypto, and Susan Fletcher sensed she was about to enter it.

　CHAPTER?109

　The command center for the NSA's main databank looked like a scaled-down NASA mission control. A dozen computer workstations faced the thirty-foot by forty-foot video wall at the far end of the room. On the screen, numbers and diagrams flashed in rapid succession, appearing and disappearing as if someone were channel surfing. A handful of technicians raced wildly from station to station trailing long sheets of printout paper and yelling commands. It was chaos.

　Susan stared at the dazzling facility. She vaguely remembered that 250 metric tons of earth had been excavated to create it. The chamber was located 214 feet below ground, where it would be totally impervious to flux bombs and nuclear blasts.

　On a raised workstation in the center of the room stood Jabba. He bellowed orders from his platform like a king to his subjects. Illuminated on the screen directly behind him was a message. The message was all too familiar to Susan. The billboard-size text hung ominously over Jabba's head:

　ONLY THE TRUTH WILL SAVE YOU NOW

　ENTER PASS-KEY ______

　As if trapped in some surreal nightmare, Susan followed Fontaine toward the podium. Her world was a slow-motion blur.

　Jabba saw them coming and wheeled like an enraged bull. "I built Gauntlet for a reason!"

　"Gauntlet's gone," Fontaine replied evenly.

　"Old news, Director," Jabba spat. "The shock wave knocked me on my ass! Where's Strathmore?"

　"Commander Strathmore is dead."

　"Poetic fucking justice."

　"Cool it, Jabba," the director ordered. "Bring us up to speed. How bad is this virus?"

　Jabba stared at the director a long moment, and then without warning, he burst out laughing. "A virus?" His harsh guffaw resonated through the underground chamber. "Is that what you think this is?"

　Fontaine kept his cool. Jabba's insolence was way out of line, but Fontaine knew this was not the time or place to handle it. Down here, Jabba outranked God himself. Computer problems had away of ignoring the normal chain of command.

　"It's not a virus?" Brinkerhoff exclaimed hopefully.

　Jabba snorted in disgust. "Viruses have replication strings, pretty boy! This doesn't!"

　Susan hovered nearby, unable to focus.

　"Then what's going on?" Fontaine demanded. "I thought we had a virus."

　Jabba sucked in a long breath and lowered his voice. "Viruses..." he said, wiping sweat from his face. "Viruses reproduce. They create clones. They're vain and stupid--binary egomaniacs. They pump out babies faster than rabbits. That's their weakness--you can cross-breed them into oblivion if you know what you're doing. Unfortunately, this program has no ego, no need to reproduce. It's clear-headed and focused. In fact, when it's accomplished its objective here, it will probably commit digital suicide. "Jabba held out his arms reverently to the projected havoc on the enormous screen. "Ladies and gentlemen." He sighed. "Meet the kamikaze of computer invaders... the worm."