Claire thought Vanessa was only her husband’s mistress—until she discovered the two women had been discussing something far more dangerous.

Claire didn't fall.

As her feet left the top floorboard, her fingers caught the heavy iron rim of the doorframe, swinging her body around as she slammed her weight against the heavy oak door, throwing it shut and sliding the thick iron bolt into place from the inside.

BANG! BANG! BANG!

A second later, Daniel’s heavy body slammed against the outside of the door, rattling the iron hinges.

"CLAIRE!" his voice roared through the heavy wood, stripped of all its cultured polish, turning into a raw, feral scream. "OPEN THIS DOOR!"

Claire backed away from the door, her hands searching the stone wall until her fingers hit a rusted toggle switch.

She flipped it.

A row of naked yellow bulbs flickered to life overhead, revealing a long, steep flight of wet concrete steps leading down into a vast, vaulted stone cellar.

The Whitmore cellar was centuries old, built beneath the original foundations of the 1890 manor. It was divided into three massive stone chambers: a wine vault, an old coal storage room, and an off-grid electrical generator bay that hummed with a low, continuous vibration.

Claire descended the concrete steps as fast as her bleeding feet could carry her, clutching Emma's envelope against her chest.

At the bottom of the stairs, she ducked behind a row of towering wooden wine racks, her heart beating so hard she could hear it echoing off the wet stone walls.

Above her, the sound of splintering wood shattered the quiet.

CRACK. CRACK.

Daniel was using an iron fireplace poker from the north hall to smash the lock off the heavy oak door.

Claire looked around desperately. The cellar had no windows. The only exit was a heavy steel storm hatch at the far end of the coal room that led up to the rear delivery driveway—a hatch that was kept padlocked from the inside.

She ran through the narrow aisles of the wine vault toward the coal room, her bare feet splashing through shallow puddles of groundwater resting on the concrete floor.

She reached the heavy steel storm hatch.

Hanging from the latch was a massive brass padlock, thick as her fist.

"No, no, no..." Claire whimpered, grabbing the iron padlock and rattling it frantically. It was solid, frozen shut with decades of rust.

Behind her, the cellar door at the top of the stairs blew inward with a violent crash.

Footsteps began descending the concrete steps—slow, heavy, unhurried.

"Claire," Daniel’s voice drifted through the vaulted stone arches, smooth and terrifyingly calm once more. "There is nowhere to go down here. You know this house. There is only one way out."

Claire backed away from the steel hatch, her eyes sweeping the dark coal room.

Sitting in the corner, resting on an old wooden workbench beside a bank of backup batteries, was a rusty iron crowbar and a heavy glass bottle of industrial solvent used for cleaning the generator.

Claire dropped Emma's envelope onto the workbench.

She picked up the heavy iron crowbar in her right hand. Then she picked up the glass bottle of solvent in her left.

She stepped out from behind the concrete pillar, stepping directly into the center of the main cellar aisle, facing the direction of the stairs.

Daniel stepped into the light of the overhead bulb.

He was holding the heavy iron fireplace poker in his right hand. His white dress shirt was spattered with wood splinters from the broken door, his dark eyes wide and bloodshot in the harsh light.

"Put the crowbar down, Claire," Daniel said, taking a slow step toward her.

Claire lifted the glass bottle of solvent, holding it high.

"This is industrial acetone, Daniel," Claire said, her voice dropping into a terrifyingly steady register. "If I throw this at your face and drop the spark from that open generator behind me... we both burn down here. Right now."

Daniel stopped. His eyes flicked from her face to the heavy glass bottle in her hand, then to the exposed copper wiring of the hummed generator six feet behind her.

For the first time in his life, Daniel Whitmore looked truly terrified.