On level eight, Lieutenant Will Mendenhall was on duty in the security center. He yawned and looked at the wall-mounted clock. He shook his head as the hour hand was a few minutes from hitting the number two. He was to be relieved by Jason Ryan at 2 A.M., but he could swear that the minute hand on the clock must have frozen in place.

Just as he turned in his chair to sign off on his computer terminal, the monitor lit up.

" Lieutenant Mendenhall, Europa has monitored a two hundred and fifty percent power surge on levels seventy-three and seventy-four--the security system on those levels is currently in failure mode as of oh-one-fifty-eight hours."

Mendenhall heard Europa's female voice and shook his head as Jason Ryan walked into the office, yawning and looking as if he hadn't gotten any sleep.

"What's up, Will?"

"Europa is reporting a power surge and security system failure on levels seventy-three and seventy-four. I was getting ready to--"

Ryan and Mendenhall felt a rumble pass through their feet just as warning bells started sounding throughout the facility.

"What in the hell was that?" Will asked.

" All damage-control personnel report to levels seventy-three and seventy-four immediately. This is no drill. It is recommended that all rescue and fire personnel utilize stairwells one-oh-one and two-oh-eight for access to the affected areas."

"Europa, continue broadcasting personnel direction and accept security override Mendenhall 001700. Let me know what's happened on affected levels!"

"Override accepted,"Europa said. In the background Will heard her warnings still being broadcast through the complex communications system. "All personnel--"

Suddenly Europa went dead. The monitor was black and the sound system went down. The overhead lights flickered, went out, and then came back on. However, Europa was still nonfunctional.

"Damage report!" Will called through the intercom to the affected levels.

Jason Ryan pointed toward the door and Will nodded, knowing he was going to join the rest of security on levels seventy-three and seventy-four.

There was no reply from the lower levels. Will was getting frustrated because he couldn't direct the rescue and firefighting efforts. Then all of a sudden Europa sprang back into life, as if nothing had ever happened to her.

" Lieutenant, Europa has detected trace amounts of Composition Five explosive on levels seventy-three and seventy-four immediately after security shutdown. Total collapse of vault housings in one hundred two of three hundred seventy-two vaults. Preliminary examination of area is total loss of artifacts in seventy percent of vaults on level seventy-three and fifty percent on level seventy-four."

"Jesus Christ," Mendenhall said as he saw the video as Europa finally established a working camera on level seventy-three. The picture showed a total collapse of the rock ceiling, and somewhere fires were raging.

Captain Everett and Niles Compton surveyed the damage on level seventy-three. Temporary floodlights had been placed by the engineering department, and they cast eerie shadows on the granite boulders that had been blasted free of the excavated tunnel. Smashed and burned-out vaults had been crushed beneath the tremendous weight of the cave-in.

"Preliminary report?" Niles asked as he reached down and picked up a piece of pottery freed from one of the vaults by the rush of water from firefighting hoses. It looked Roman, but he couldn't be sure. Niles gently placed the shard on a small outcropping of rock.

"We estimate only ten pounds of C-five were used. The engineers said you don't need much to bring down the ceiling in any of our corridors except for the reinforced residence and lab levels. As for the fire, Europa is working on what accelerant was used, but it looks like something new and not on the books." Everett held up his hand and a gleaming, silvery substance shimmered. "At least, I've never seen an accelerant like this. Storage level seventy-tour only sustained cave-in damage, and only three vaults were a total loss. My thinking is the target was level seventy-three, not both."

"So, we're looking at an intentional act of sabotage."

Everett walked over to the computer terminal that was dark and without power since Pete Golding had the system momentarily shut down. He reached up and touched its face.

"Europa reported a power failure on these levels moments before the explosion and fire. I checked her records; the electrical conduit was severed by a small charge, but only after our saboteur gained access to the level," Everett said as he turned and eyed the director. "The question, Dr. Compton, is why wasn't the identity of that person noted by Europa with her eye-scan procedure? This level is low security, but you still have to gain entry by key card and eye scan."

"I see where you're going with your line of thinking, but to get to your target area, Captain, you would have to assume someone deleted Europa's clearance history for these levels--t hat's why the temporary failure of Europa."

Everett didn't avert his eyes, because he knew that the only logical conclusion was upsetting to say the least, enough so that he didn't want to voice it.

"Then it had to be someone with a level one-A security clearance."

"A department head." Everett finally voiced the unthinkable.

"Damn," Niles said, kicking at a small stone statue.

Niles Compton was at his desk on level seven with Alice. She had been alerted at home in Las Vegas after the sabotage at the complex. Niles placed his glasses back on and then stared at the nineteen folders sitting on his desk. Every department head in the Group was accounted for including himself, Alice, and Virginia. To the right of that pile, Carl Everett had delivered his own, Ryan's, and Mendenhall's, the hierarchy of the security department. Located in one of those personnel files was something that might tell them who the traitor in their midst was.

"What has me baffled is, why level seventy-three? Are we moving on that question?" Alice asked.

Niles took a deep breath of air and then let it out slowly.

"I have Captain Everett and Virginia on that now. They're compiling a list with Europa of the contents of every vault on both levels. I just find it hard to believe that one of our people could be responsible for this--"

The double doors to his office were suddenly pulled open, and Virginia Pollock entered and went right to the desk.

"Did you find something?"

"You haven't heard?" she asked as she hit a button on Niles's control panel. The large center-screen monitor came to life as Virginia placed the channel on the twenty-four-hour Pentagon news service. "Someone just attacked the Independence Oil facility in Texas City."

The view was of a massive refinery fire. The image came from a helicopter circling the plant ten miles distant. Far below, you could see hundreds of firefighters fighting the blaze among the rubble and ruin of buildings and machinery.

Niles pulled his top right-hand drawer open and pulled out his direct phone line to the president. His hand hesitated over the handset, and then he slid the phone away from him.

"He may be a little busy at the moment. Have they stated any casualty reports, Virginia?"

"It's a miracle. Unlike the fatalities inside the Venezuelan attack, they think there's only one death thus far, thanks to the warning that was sent and this time heeded before the missiles struck. They do know for a fact they were sea-launched weapons."