Still, Seichan looked just as angry. Apparently she hadn't been informed of this change in plans.

"What are we going to do?" Rachel asked.

He couldn't answer. He knew there were many questions buried in that one. How were they going to get out of here? What about the promised antidote to her poisoning? Without the Doomsday key in hand, they had no bargaining chip.

They needed that key.

Just before the assault, something had begun to gel in Gray's mind. A vague idea, the whisper of a thought. But the sirens and bombs had blown it all away.

Something about the missing twelfth consecration cross.

Out of the smoke, a helicopter swooped into view. Its shadow fell over the yard as it skimmed to a hovering position. Rotorwash buffeted the enclosed space, flattening the flowers and shaking the bushes.

Gray and the others had nowhere to run.

As he faced the garden, he suddenly knew the answer. There was no calculation, no piecing it together. It formed fully in his head.

Time slowed to a crawl.

He remembered his fixation with the old abbey map at the Troyes library. He knew what had nagged at him. There had been a pagan cross inscribed on that very page. Back at the library, he had missed it, failed to recognize it in that context. In his mind's eye, he saw it clearly now.

The pagan cross represented the earth quartered into its primary corners: east, west, north, south.

Just like the map's compass.

Gray stared into the garden-at the decoration that graced the middle of the yard. The compass was an ornate brass construction that rested on a waist-high stone plinth. The compass was sculpted with elaborate frills, each of the four cardinal directions clearly marked, along with many gradations in between.

The twelfth consecration cross-though disguised in this new incarnation-had been in plain sight all along.

If Gray had any doubt, he reminded himself of one other thing. The compass stood in the center of the courtyard, surrounded by stones marked with sacred symbols. Such a spot was the most hallowed ground to the ancients who raised those old stones.

Gray knew what he had to do.

He swung to the guard and pointed to the hovering helicopter as its hatches were thrown open. "Fire!"

But the guard looked terrified. He was young, likely new, assigned to babysit the tour groups. He was out of his league.

"Well, if you're not going to..." Kowalski grabbed the gun out of the guard's stunned hands. "Let me show you how it's done."

He sprang up, aimed, and began shooting at the helicopter. Men dove away from the open hatch. One drop line tumbled loose and writhed as the helicopter yanked up and off to the side, caught by surprise at the gunfire.

Gray knew he had moments to confirm his theory.

"Kowalski, you hold off that bird! Everyone else, with me!"

Gray ran into the garden and headed toward the compass. "Get around it!" he ordered as he gripped the large brass N.

Wallace, Rachel, and Seichan manned the other cardinal directions.

"We have to turn it! Like at the tomb on the island. Make it twist like a spiral!"

Gray dug his toes into the lawn, planted his shoulder, and pushed. The others did the same. Nothing happened. It wouldn't budge. Was he wrong? Were they turning it in the right direction?

Then suddenly it gave way. The entire compass lurched, rotating around its brass hub.

Rifle shots blasted from Kowalski's position.

Return fire peppered down from above, concentrating on the shooter. Rounds chewed into the column where Kowalski had taken shelter. He was forced to duck away.

The helicopter swung back toward the yard. The beat of the rotors pounded, deafening them.

"Don't stop!" Gray yelled to the others.

The mechanism was ancient. Turning the compass was like drilling into sand: grating, stubborn, and coarse.

The helicopter steadied into position above them.

Ropes dropped on all sides.

3:27 P.M.

"Don't shoot!" Krista screamed as one of the men aimed at the four below. "I want that group alive."

At least for now.

The soldiers' bloodlust was up. One of them had taken a stray round to the face and lay dead on the cabin floor. Whoever was firing on them knew how to handle a rifle. She'd give him that much.

She pointed to the far side of the cloister, to where the sniper had taken roost. She clapped a gunman with a grenade launcher.

"Take him out."

There was nowhere the bastard could hide.

Especially from a thermobaric grenade.

Kowalski sprinted.

He knew from the sudden cessation of gunfire that something much worse was about to drop on his head. At least the old lady and the guard had already fled the cloister when the firefight first started. They'd wanted no part of this fight.

Typical French...

The only warning Kowalski got was a sharp whistling that cut through everything else. He glanced back-so he didn't see the hole.

One second he had stones under his feet, then nothing but open air.

He fell headlong down a narrow set of steps.

A fiery explosion ripped past his heels. A blast wave kicked him in the rear and catapulted him down the rest of the steps.

He landed in a crumpled, dazed pile at the mouth of a dark tunnel.

Deafened, with his nose bleeding and his backside smoking, Kowalski realized two things. The steps hadn't been here a moment ago. And worse, he knew where he must be.

3:28 P.M.

Even with his ears ringing from the grenade blast, Gray heard his name bellowed, followed by a blistering string of curses.

"Run!" Gray yelled to the others.

He grabbed Rachel; Seichan snagged Wallace. They all fled from under the helicopter, dancing through the whipping ropes. The blast wave from the grenade had burst outward with a fiery slap. Even the helicopter had bobbled, which bought them just enough time to sprint for the walkway.

A large chunk of the cloister was now a blackened, smoky ruin.

Seconds before, Gray had watched Kowalski barreling away from the blast zone. Then the big man had suddenly fallen straight out of view, as if he'd tumbled down a well-no, not a well.

"Get your ass over here!"

Only one thing made Kowalski sound that scared.

The four of them ducked into the walkway. Gray spotted it immediately. A narrow staircase had opened in the floor. So he'd been right. Spinning the compass had unlocked the hidden passageway.

"Hurry," he said.

Behind them, the helicopter had stabilized and men in combat gear zipped down the lines. He heard the boots hitting the ground as he reached the stairs.

"Down, down, down," he urged.

The others piled through the opening. Gray went last. Out of the corner of his eye, he saw a soldier leveling a rifle. He ducked. A spray of bullets passed over his head and rebounded off the wall. Ricochets pelted like bee stings. He took one to the skull that felt like it cracked bone.

It could have been worse.

Only rubber bullets, he realized as he hurried below. Nonlethal. Someone wanted them captured alive.

He tumbled into a lower passage.

Kowalski yelled back to him. "There's a lever over here! Should I pull it?"

"Yes," they all shouted in unison.

Gray heard a scrape of metal. The stairs began rising behind them. Each step was really a slab of rock, staggered to make a staircase. Each slab rose vertically to reseal the opening above.

Darkness fell over them completely.

A scratch of flint sounded, and a small flame flickered to life. It illuminated Seichan's face as she held up her lighter.

"Now what?" she asked.