Chapter Six
The cold inside the subterranean vault felt different this time—thick, heavy, and tainted with the sulfurous reek of a freshly struck flare.
Luke moved first, his flashlight beam slicing through the drifting pall of smoke.
His Sig Sauer was locked in a two-handed tactical grip, sweeping the corners of the concrete room.
Behind him, Maya matched his footing step for step, her sidearm raised, her eyes scanning the shadows along the rusted metal shelving.
Cole and Buster brought up the rear, the Malinois straining against his harness; his dark lips drawn back in a silent, lethal snarl.
"Clear left," Luke grunted, his voice a gravelly whisper.
"Clear right," Maya echoed, her tone rock steady.
The white halogen light was gone, replaced by the flickering, sinister crimson glow of an emergency flare burning at the far end of the chamber.
Sitting in the center of the room, the iron-bound chest was no longer intact.
Someone had tossed a military-grade incendiary thermite canister directly onto the velvet lining.
White-hot chemical sparks rained down into the interior, hissing violently as sixty-year-old wood, leather, and paper vanished into acrid black smoke.
The extreme heat radiated across the concrete floor, blistering the paint on the surrounding shelves.
"He's trying to melt the badges!" Maya shouted over the roar of the chemical reaction.
Without a second's hesitation, Maya holstered her sidearm and lunged toward the corner of the room where a dry-chemical fire extinguisher was mounted to the wall.
She yanked the pin, stepped right into the blinding heat, and unleashed a thick, white cloud of extinguishing agent directly into the iron chest.
"Maya, stand back!" Luke barked, stepping between her and the sputtering flare, his body shielding her from the popping chemical embers.
"I’m not losing this evidence twice!" Maya snapped back, her eyes watering through the thick smoke as she held the trigger down until the blinding white glare choked out, leaving behind only the sputtering hiss of ruined metal and grey ash.
Beside them, Buster let out a sharp, booming bay that echoed off the concrete walls like a cannon shot.
The Belgian Malinois surged toward the back wall of the bunker, his front paws slamming against a heavy steel supply cabinet that had been shoved out of place.
Behind the tilted cabinet was an opening no one had seen during the initial search—a narrow, hand-blasted limestone tunnel cutting straight into the dark cavern system beneath the Palo Pinto ridge.
"He didn't come back down the front stairs," Cole said, his flashlight beam probing the damp, pitch-black tunnel where fresh boot prints churned through the mud. "He had a secondary exit wired straight through the mountain."
Luke stepped up to the mouth of the dark tunnel, his flashlight beam catching a single drop of fresh, bright red blood on the jagged limestone wall.
One of Cole's shots from the ridge had found its mark.
Luke turned to Maya, his hand coming up to catch her upper arm, pulling her close. His thumb wiped away a fresh streak of black soot near her eye; his dark gaze burning into hers with absolute, fiercely protective intensity.
"You alright, Doc?" Luke asked, his voice low and thick with an emotion he couldn't hide.
"I'm fine," Maya breathed, her hand coming up to cover his wrist, feeling the iron strength in his fingers. She looked past him into the pitch-black tunnel. "He’s wounded, Luke. And he’s running out of places to hide."
Luke’s jaw set like granite as he turned back to the tunnel, clicking his flashlight to high power.
"Cole, take the flanks on the upper ridge road in case he pops out near the logging spur," Luke ordered, his tone leaving zero room for argument. "Maya and I are going into the dark."
Chapter Seven
The limestone fissure narrowed until the damp, jagged walls squeezed in on both sides, forcing Luke to turn his shoulders sideways. The air here was bitter cold, striking against their sweat-drenched skin like an icy blade, smelling of wet mineral dust, sulfur, and the coppery tang of fresh blood.
Luke moved with silent, feline lethal precision.
His tactical flashlight beam cut through the ink-black gloom, casting long, dancing shadows across stalactites that hung like subterranean teeth.
Right behind him, her left hand lightly resting on the back of his tactical vest to maintain contact in the suffocating dark; Maya kept her sidearm low and ready.
"Blood spatters on the right wall," Maya whispered, her voice barely a breath against the cold stone.
She pointed her flashlight beam toward a dark crimson smear three feet off the cavern floor.
"Height suggests a high-torso graze. The impact threw him against the limestone, but he didn't slow down. "
"He knows this tunnel," Luke grunted softly, his dark eyes tracking the distinct lug-sole prints pressed into the soft clay floor. "Look at the stride length. He isn't stumbling. He’s running a route he’s memorized."
They pushed fifty yards deeper into the mountain, where the narrow crack suddenly broke open into a massive subterranean chamber. The acoustics changed instantly; the dripping of mineral water echoed from high above in a vaulted natural dome.
In the center of the chamber sat an old wooden worktable, rotting from decades of damp air, surrounded by rusting steel drums.
Luke held up a flat hand, bringing them to a complete halt. He swept his light across the cavern floor.
A discarded first-aid kit lay open on the table. Torn gauze wrappers, an empty bottle of antiseptic, and a bloody compression bandage were scattered across the rot-eaten wood.
"He stopped here to patch himself up," Maya noted, stepping out around Luke’s flank, her eyes scanning the table. Her gaze locked onto a yellowed, water-damaged map pinned to the cave wall with a heavy surveyor's spike. "Luke... look at this."
Luke stepped beside her, his chest brushing against her upper arm, his warmth radiating into the cavern’s chill.
The map wasn't an official state document. It was a hand-drawn 1992 parcel survey of Palo Pinto and Hood counties, covered in precise red ink grid lines and handwritten coordinates. Dozens of small red crosses were marked along the Brazos River basin and the surrounding timber ridges.
Beside the map, carved directly into the soft limestone wall with a heavy knife, was a single, chilling inscription:
THE RIVER BURIED THEM. THE FIRE BARELY STARTED.
Maya’s breath caught in her throat as her fingers hovered inches from the fresh gouges in the rock. "This wasn't just three state troopers, Luke. Look at the grid markers. There are at least twelve other locations marked along the Brazos Valley."
Before Luke could respond, a low rumble vibrated through the limestone beneath their boots, followed by the dull, muffled thump of a detonation echo high above them toward the surface.
"He rigged the upper exit," Luke said, his voice turning into cold, deadly steel as he grabbed Maya’s arm, pivoting her toward a narrow set of hand-hewn stone steps spiraling upward into the dark. "He’s blowing the access shaft behind him to collapse the ridge."