The crawl space’s walls were not constructed of stone block but had rather been carved from the bedrock. Crawling as they were in a dark and cramped space, inches of travel felt like many feet.
After thirty more seconds of moving, Remi stopped. “Wall,” she whispered. “Branch to the right.”
They made the turn, then crawled another twenty feet to another turn, this one to the left. After another short straightaway and another two right and left turns, they found themselves at a ceiling hatch tall enough for Remi to stand in. She ducked back down and said, “There’s a ledge, then a drop-off into some kind of room.”
“Can you make it?”
“I think so.” She boosted herself up and disappeared. Ten seconds later she called, “Okay.”
Sam stood up, crawled over the ledge, and dropped down beside Remi, who was already surveying the room, which measured ten by ten feet. Like the crawl space, the walls and floor and ceiling were bedrock. Mounted on three walls were what looked like wooden gun cases, each one divided into vertical slots meant for, they assumed, either muskets or swords. In the wall to their left was a truncated arch.
“This must be original to the fort,” Sam whispered. “Probably a last-ditch bolt-hole and armory for defenders.”
“Which means there has to be another way out or in.”
“Unless it got closed up when the château was converted to a prison.”
“Don’t even joke about that.”
“One way to find out.”
They ducked through the arch and into the tunnel beyond.
It was labyrinth. For the next hour they picked their way along the tunnel, into dead ends, through horseshoe hallways, and up and down stairs until Sam finally called a halt. Ahead the tunnel split yet again into three branches like spokes on a wagon wheel.
“What is this place?” Remi panted.
“I don’t know that it has a name,” Sam replied, “but I’m guessing it’s still part of the last-ditch defense theory—attackers come down here, get trapped, then are ambushed by the defenders.” He licked his finger and held it up. “There’s air movement.” He turned in a circle, trying to localize it, then shook his head. “Can’t tell where it’s coming from.”
Remi wasn’t listening. Eyes closed, she turned first this way, then that, her hands at her waist, fingers alternately left and right. “Retracing our steps,” she finally whispered. “That way’s the courtyard.” She pointed down the left tunnel. “I think. If there’s a hidden entrance, it’s got to be there.”
“Good enough for me,” Sam said.
He took her hand and they set off again.
Time and again the tunnel branched off and each time Remi would stop, repeat her slow-motion, eyes-closed spin, then point.
After another hour their tunnel came to an abrupt dead end—or near dead end. Leaning against the wall was a wooden ladder; roughly hewn from what looked like red oak, the uprights and rungs were slightly crooked. They shined their lights upward. The ladder, well over thirty feet tall, ended at a wooden hatch.
“Smell that?” Remi said. “It’s rain, Sam. We’re close.”
He nodded absently, eyes poring over the ladder. “This is ancient,” he murmured. “It could be original. This could be hundreds of years old.”
“That’s wonderful, Sam, but right now all I care about is whether it’ll take our weight.”
He gave the ladder a twist, then put his weight on the bottom rung. It creaked, but held. “Give me the pry bar, will you?”
He tucked it into his belt and climbed up to the hatch. “It’s locked,” he called down.
He wriggled the pry bar under the edge and wrenched once, then again, then once more and the latch popped open. Sam threw open the hatch. Fresh air rushed through the opening and down the ladder.
“We’re in one of the turrets,” Sam whispered down.
He boosted himself up and out, then Remi followed. As her head cleared the opening, outside the door they heard the scuff of a shoe on stone. Sam helped Remi the rest of the way out and together they crept to the door.
Over the railing they could see a guard—the one from before, they assumed—strolling across the courtyard, flashlight panning left and right. The man turned around, shined his flashlight briefly over the walkways, then disappeared through the arch.
They gave him thirty seconds to move off a safe distance, then trotted down the walkway, left down the steps, then through the courtyard and into the tunnel they’d first entered.