Now came the tricky part: the timing.

“How’re we doing?” he asked Remi.

“See for yourself. No sign of them.”

He crept back to the door and peeked out. The landing area was lost in the falling snow. He pulled Remi away from the door. “Soon as you hear the ignition spark, take off. Retrace our steps and we’ll meet back at the woodshed.”

“Right.” Remi got into position beside the door.

Sam returned to the rigged boat and crawled beneath the helm console again.

“Cross fingers,” he muttered, then touched the exposed ignition wires and gave them a twist. There was a spark, then a pop. Sam wriggled backward, jumped to the dock, raced for the door.

“Go,” he rasped to Remi.

She peeked out, then darted into the gloom.

The boat’s engines gurgled to life. Gray smoke burst from the manifolds and filled the boathouse. The water beneath the stern turned to froth and the boat surged forward, nosing through the doors and disappearing into the drifting snow.

“Sail true,” Sam said, then turned and ran.

CHAPTER 49

He had taken three strides out the door when he heard a snow-muffled voice to his left shout, “There!” Unsure whether it was for the escaping speedboat or for him, Sam veered right, along the curve of the building, then sprinted onto the lawn in the direction of the sextant statue. If Kholkov and his partner were in fact after him he didn’t want to lead them back to Remi.

When he saw the statue appear ahead, he dove into a headfirst slide that took him behind the pedestal. He flipped onto his belly and looked back the way he’d come. Ten seconds passed. He heard the sound of feet pounding on gravel. Through the blowing snow he saw two figures appear around the corner of the building and duck into the boathouse. Now the question was, how long would it take Kholkov to reverse his own sabotage? The solenoid wire would take less than a minute, but returning the flywheel to its proper position would be trickier. The longer it took, the harder their automaton boat would be to find.

One minute passed. Two minutes. An engine growled to life and revved up. After a few seconds it faded, moving out onto the lake. Sam got up, circled to the rear of the chapel, and found Remi crouched in the semidarkness of the woodshed.

“I heard,” she said. “The question is, how much time did it buy us?”

“Ten, fifteen minutes at least. In this weather it’ll take them at least that long just to find our decoy. Come on.”

He helped her to her feet. They climbed the steps to the rear door and pushed through.

After the wind and snow, the relative warmth of the chapel felt like heaven. Compared to its grand exterior, the chapel was surprisingly simple, with reddish brown stone tiles, scarred wooden pews, and white walls bearing framed religious icons. Above their heads a balcony spanned the rear wall, while the vaulted ceiling was filigreed in light pink and gray paint. Tall mullioned windows on the side walls cast the interior in milky white light.

They made their way down the center aisle to the far end of the chapel to a narrow door. Through it they found a crescent-shaped room dominated by a spiral staircase. They started upward. After thirty or forty steps they found themselves at a wooden trapdoor secured by a sliding hasp and padlock. The padlock wasn’t locked.

“Looks like somebody missed an item on the evacuation check-list,” Remi said with a smile.

“Our good luck. Wasn’t looking forward to defiling a Bavarian national landmark.”

Sam removed the padlock and slid back the hasp bolt. He carefully lifted the trapdoor, climbed through, then helped Remi up and closed it behind them. Aside from what little light seeped through the shuttered slit windows, the octagonal space was dark. They clicked on their flashlights and began looking around.

“Here,” Remi said, kneeling down. “Got something.”

“Here, too,” Sam said from the opposite wall. He moved to Remi and inspected what she was shining her flashlight on. Stamped into the heavy timber molding beneath the window, nearly obliterated by layer upon layer of paint and lacquer, was a cicada symbol.

“Yours the same?” Remi asked.

Sam nodded and they moved to the opposite side. A second cicada symbol was stamped into the wood. “Why two?” he wondered aloud.

“The line—‘a trio of Quoins’ . . . they must have meant it to apply to more than just the sextant.”

It took them less than thirty seconds to find the third. The first two cicada symbols were situated near the front of the minaret, the third at the rear.

“Let’s form it up,” Sam said.

He crouched beside one of the stamps, and Remi did the same, then they extended their arms, each pointing at the other as well as the third stamp.

“Correct me if I’m wrong,” Sam said, “but this is an isosceles triangle.”

“It is indeed. But which way is it meant to point?”

“If we extend the lines, the two at the front would point at the lake and into the mountains. The third one points inland—behind us.”

Sam lowered his arms as he sat down, back against the wall. His brows furrowed for a few seconds, then he smiled.

“What?” Remi asked.

“The last part of the line,” Sam replied. “I knew something looked familiar.” He dug into his pants pocket and came up with the Saint Bartholomae’s tour brochure. He flipped through it. “There.” He handed it to Remi. “Frigisinga.”

Remi read: “ ‘Until 1803 the hunting lodge adjacent to the chapel was the private retreat of the Prince-Provosts of Berchtesgaden, the last of whom, Joseph Conrad of Schroffenberg-Mös, had also served as the Lord Bishop of Freising.’ ”

“I knew I’d read something about that during our research,” Sam said. “I mentally misplaced it. The eighth-century name for Freising was Frigisinga.”

“Okay, so this Schroffenberg-Mös fella was here?”

“Not just here. He lived here, and we’ve already been there.”

They climbed back through the hatch and down the spiral staircase, then retraced their steps through the chapel and out the back door and started down the path toward the woods. Five minutes later they were back at the cabin in whose loft they’d first sought shelter. They stopped at the post-mounted plaque beside the front door.

Remi read: “ ‘Once served as the private hunting lodge and warming cabin for the last of Berchtesgaden’s Prince-Provosts, Joseph Conrad of Schroffenberg-Mös.’ ”

“ ‘Formerly of Frigisinga,’ ” Sam finished.

They stepped inside. While most of the cabin was made of heavy timber, both the stanchion footers and the foundation, which rose eighteen inches from ground level, were constructed of blocked stone.

“Let’s check the stonework first,” Sam said. “Timber can be easily replaced; stone, not so much.”

“Agreed. How are we on time?”

Sam checked his watch. “Fifteen minutes since our rabbit ran.”

Knowing what they were looking for, they made quick work of the search, splitting up and walking hunched over along the walls, flashlights playing over the blocks.

“Grasshopper marks the spot,” Remi called. She was kneeling beside a footer beneath the loft. Sam hurried over and crouched beside her. Stamped into the upper-left corner of the block abutting the footer was the familiar cicada stamp.

“Looks like we’re going to have to do a little defiling after all,” Remi said.

“We’ll be gentle.”

Sam looked around, then trotted over the open-hearth fireplace, grabbed a steel poker from the mantel rack, and returned. He went to work. Though the poker’s end was slightly spatula-shaped, it was still wider than the gaps between the stones so it took a precious ten minutes of inching the block outward before together they could pull it free. Remi reached her hand into the alcove.