Gray faced Rachel. He read the same understanding in her eyes. He also knew what she was thinking. If they wanted answers, it was high time they came clean with Dr. Wallace Boyle.

8:42 P.M.

Wallace studied the artifact. He sat at a card table in one of the tent-cabins, the lantern at his elbow. Rachel sat next to him. She warmed her hands on a cup of tea. It was the last from Seichan's thermos. She sipped it, appreciating the heat if not the slight bitterness. She would have preferred a dollop of cream with it, but the tea went a long way to chasing the last of the chill from her body.

The team had spent two hours out in the cold, taking pictures and measurements, recording everything here. But to what end?

Rachel stared across the table at Gray. As they had worked, Gray had grown more introspective. She knew him well enough to recognize when he was troubled, when he sensed he was missing something. She could read the calculations going on in his head, knew the primary question plaguing him.

What was so important about this site?

Seichan sat next to Gray. She had contributed little to the day's work, as if she were leaving it up to them to solve this puzzle. Now they all waited for the professor's assessment. A pair of bunkbeds filled the back half of the space. Kowalski lay sprawled on one of the bunks with an arm over his eyes, shielding them against the lamplight. Since his snores weren't rattling the tent fabric, he must still be awake.

"I don't know what to make of it," Wallace finally said with a shake of his head. He held the leather satchel. He'd already examined the mummified finger. "I don't know where Marco found this, nor why anyone would kill for it."

"Then let's go back to the beginning," Gray said. "Why Father Giovanni first came here. What he hoped to gain from visiting this site."

"It was the bodies," Wallace mumbled, still fingering the satchel.

Rachel sat straighter. "Bodies? What bodies?"

Wallace finally placed the satchel down and leaned back in his chair. "What you have to understand is that for ages, peat bogs were revered by the ancient Celts and their Druids. They would bury or sink objects of worship into the bogs. Such places have proved to be archaeological treasure troves. Swords, crowns, jewels, pottery, even entire chariots. But human remains were also found here."

The professor let that sink in as he stood and stepped over to a small camp stove, where he warmed his hands over a burning briquette of peat. He nodded down at the stove. "Peat was the source of life, so it had to be honored. And that honoring often came in the form of human sacrifice. The Celts would kill their victims and toss their bodies into the peat bogs to appease the gods." He turned to face the table again. "And what goes into the peat ends up being preserved for the ages."

"I don't understand," Rachel said.

Gray explained. "The acidic nature and lack of oxygen in the peat keep things from rotting."

"Aye. Pots of butter have been found in bogs, a hundred years old. And the butter is still fresh and edible."

Kowalski groaned in disgust and rolled to his side. "Remind me not to have toast at your house."

Wallace ignored him. "In the same way, those sacrificed bodies were preserved. They're known as 'bog mummies.' The most famous being Tollund Man, found in Denmark. He's so well preserved that he looks as if he fell into the bog yesterday. Intact skin, organs, hair, eyelashes. Even his fingerprints can still be discerned. Examination revealed that he'd been ritually garroted. The knotted rope was still around his neck. And we know it was the Druids who killed him, as the man's stomach was filled with mistletoe, a plant sacred to the Celtic priests."

"And you found a bog mummy here?" Gray asked.

"Two, actually. A woman and a child. We discovered them as we were excavating the stone ring. They were found in the center, curled together in death."

Seichan asked her first question. Her eyes flickered to Rachel, then away again. "Were they sacrificed?"

Wallace perked up at her question. "That's exactly what we wondered. It's now well accepted that stone rings were solar calendars, but they also served as burial sites. And this site here must have been especially holy. A stone ring within a sacred bog. We had to know if this was a natural burial or a murder."

This last was said with a twinge of guilt.

"We were under instructions to leave the bodies intact, to send them to the university whole, but we had to know. There was no rope around the necks of the bodies, but there was another way to discover if this was a ritual sacrifice."

Rachel understood. "Mistletoe in the stomach."

Wallace nodded. "We performed a small examination. Well documented, I might add." He moved to his pack, undid the ties, and removed a file. He shrugged as he returned to the table. "I wasn't supposed to keep a hard copy."

He sifted through the file and pulled out a set of photos. One showed the woman and child curled in black soil. The woman cradled the child in her arms. They were tucked together as if asleep. The bodies were gaunt and emaciated, but the woman's black hair still draped her face. The next photo showed the woman naked on the table. A hand was in view, holding a dissecting scalpel.

"Before we sent the body on to the university, we wanted to see if there was any mistletoe pollen in her stomach. It was a minor violation."