The hidden wall slammed shut just as I stepped into the hallway.

The glass conservatory was a sprawling Victorian addition on the southern wing of the house, built over the original stone foundations of the eighteenth-century manor. In the daytime, it was a cathedral of light, filled with hanging ferns, climbing jasmine, and the tiered tables where Clara had spent her Saturday mornings cultivating rare hybrid begonias.

Tonight, beneath the moonless November sky, the glass ceiling was black, reflecting only the distant amber wash of the security lamps along the perimeter wall. The air was warm, thick with the damp, earthy fragrance of potting soil, rotting leaves, and the sharp, chemical tang of liquid fertilizer.

I carried Perrin to the wicker chaise lounge tucked near the double glass doors leading to the exterior courtyard.

I stripped off my heavy wool overcoat, bundling it around his small frame until he was completely cocooned in the dark fabric. He clutched the lapels with both hands, his eyes darting across the shadows between the giant monsteras and ficus trees.

"You stay right here, buddy," I whispered, kneeling in front of him, my hands framing his hollow cheeks. "Do not move from this chair. If you hear loud noises, you cover your ears and you count to one hundred. Do you hear me?"

Perrin’s lower lip trembled, but he nodded, his knuckles turning white where they gripped my coat. "The latch is under the bags of lime, Daddy. Behind the iron shelf."

I kissed the crown of his head, standing up to my full height. The fireplace poker felt balanced and cold in my right hand, three feet of forged black steel terminating in a hooked, pointed claw.

I walked down the central flagstone aisle of the conservatory, my rubber-soled boots making no sound against the moss-slicked stone.

At the far western corner, where the masonry of the main house met the glass framing, sat three heavy industrial metal shelving units loaded with terracotta pots, bags of perlite, and fifty-pound sacks of agricultural lime.

The dust on the flagstones was telling. Two deep, parallel grooves cut through the gray dirt, indicating that the middle shelving unit had been pulled out and pushed back repeatedly over the last few days.

I set my shoulder against the steel frame of the shelf and shoved.

The unit groaned, the rusty casters grinding against the stone, swinging outward by three feet to reveal an arched opening cut directly into the original fieldstone foundation.

A cold draft washed over my face—stagnant, chilled, and smelling of damp mortar, copper pipes, and human confinement.

A narrow flight of crude stone steps descended into the darkness.

At the bottom of the steps, twenty feet down, a single yellow incandescent bulb cast long, wavering shadows across a dirt floor.

I didn't turn on my flashlight. I descended the steps one by one, keeping my weight on the balls of my feet, my left hand tracing the wet, slimy stone of the wall.

At the foot of the stairs was a short, barrel-vaulted tunnel that had once served as a coal chute in the early nineteen-hundreds. At the end of the tunnel stood a modern, reinforced steel security door—the kind installed in commercial bank vaults or panic rooms. It had an electronic keypad deadbolt mounted beside the heavy mechanical latch, but the electronic display was dark, bypassed with a manual key cylinder.

Beside the door, sitting on an overturned plastic milk crate, was a half-eaten sandwich wrapped in wax paper, a thermos of black coffee, and a portable radio playing low, crackling static.

From inside the room beyond the steel door came a sound.

It was a cough.

Weak, rattling, and wet, followed by the faint, metallic clink of a chain sliding across a concrete floor.

My vision blurred with a sudden, violent surge of adrenaline. The blood roared in my ears so loudly it drowned out the hum of the overhead pipes.

I reached for the heavy lever handle of the steel door.

Before my fingers touched the metal, the heavy thud of footsteps sounded from the tunnel behind me.

"Julian?"

A man’s voice echoed down the stone corridor, breathless and sharp.

I turned around slowly, stepping into the yellow light of the hanging bulb.

Standing ten feet away, blocked by the low stone archway, was Thomas. He wore his grease-stained canvas work jacket and a black woolen knit cap pulled low over his ears. In his right hand, held loosely against his thigh, was a heavy steel crowbar.

Thomas stopped dead when he saw me.

His eyes moved from my face down to the iron fireplace poker in my hand, then flicked toward the steel door behind me. His weathered, leathery face didn't register shock. It registered the cold, mechanical resignation of a man whose contract had just gone wrong.

"You weren't supposed to be back until tomorrow night, Mr. Sterling," Thomas said, his voice flat, carrying the gravelly rasp of a lifetime of cheap tobacco.

"Where is the key, Thomas?" I asked.

I didn't yell. I didn't raise the poker. I simply stood there, six feet two inches of muscle and bone, watching the distance between us contract.

Thomas shifted his grip on the crowbar, his shoulders tightening beneath the canvas coat. "Rhea paid me fifty thousand dollars to keep the door locked and drop the tray twice a week. She told me the lady was a runaway lunatic who tried to burn the house down with the boy inside. She told me it was a private medical guardianship."

"Where is the key?" I repeated.

Thomas took a slow half-step forward, his eyes narrowing with a predator’s calculation. "You know how much time I’m looking at if the state police pull up that driveway, Julian? Kidnapping carries twenty-five years in this state. I’m fifty-eight years old. That’s a life sentence."