Eighteen terrified nannies had already fled Dominic Vale’s fortified estate,

The nursery was dead quiet by 11:30 PM, save for the violent drumming of sleet against the heavy casement windows.

Noah was asleep. It had taken two hours of quiet singing—an old Irish folk ballad my grandmother used to hum in the South Boston tenements—and a bowl of plain white rice before the tension finally drained from his small limbs. He lay curled on his side in the massive four-poster bed, one hand tucked beneath his cheek, the other still wrapped firmly around the sleeve of my cardigan where I sat on the edge of the mattress.

Every muscle in my ribcage throbbed with a persistent, fiery ache. Every breath felt like a needle sliding between my fifth and sixth ribs, but I didn't dare move.

On the nightstand, the antique silver teacup sat cold and untouched. At 7:00 PM, when the floor maid had come to clear the tray, I had spilled the poisoned liquid down the bathroom drain, leaving only dark dregs at the bottom to make it appear as though Dominic had consumed it during his brief visit to check on the boy.

Dominic had stood in the doorway for three minutes, silent as a statue, watching his son sleep in my arms. He had looked at the empty teacup, looked at me, and murmured a single phrase before leaving: "You have sixteen hours until the family council convenes, Miss Hayes. Do not make me regret keeping you alive."

Now, the grandfather clock in the lower hall struck twelve.

Dong. Dong. Dong.

The heavy bronze chimes faded into the shadows of the stone corridors.

Then, it began.

Clink. Clink. Clink-clink-clink.

It wasn't the wind. It wasn't the settling of the century-old timber rafters. It was metallic, deliberate, and rhythmic.

It was coming from inside the wall behind Noah’s carved headboard—specifically, from the heavy cast-iron radiator pipes that ran through the ceiling into the sealed north wing.

Three taps. A pause. Three taps.

Morse code. Or a prison cadence.

In my arms, Noah did not wake, but his eyebrows drew together in a pained, reflexive grimace. He let out a soft, whimpering moan, his fingers twitching against my sleeve.

Slowly, millimeter by millimeter, I slipped my arm free from the boy’s grasp. I tucked a rolled blanket against his back so he wouldn't feel the absence of my body, slipped off my shoes, and padded across the dark room in my wool socks.

I approached the radiator in the corner.

The cast-iron pipes were cold. The heat in this section of the estate had been throttled down to fifty degrees to conserve fuel during the winter storm.

I knelt by the baseboard, pulled an old brass bobby pin from my hair, and tapped the iron pipe three times.

Clink. Clink. Clink.

I held my breath.

Five seconds of suffocating silence passed. The only sound was the howling of the lake gale outside.

Then, from forty feet away through the solid masonry, the answer came back.

Clink-clink. Clink. Clink-clink-clink.

Two taps. One tap. Three taps.

In the numerical cipher of the old Boston docks, where my uncle had worked the cargo manifests for the Irish mob, that sequence meant only one thing: Room 213.

Or in this house: Door Two. Third Lock.

My heart hammered a frantic, terrified rhythm against my cracked ribs.

I looked back at Noah sleeping peacefully in the massive bed. I had a choice. I could lock the nursery door, wait for morning, take my paycheck from Dominic Vale, and board the first commuter train back to Massachusetts. I could survive.

Or I could walk into the mouth of the beast.

I reached into the pocket of my cardigan, pulling out the small steel keycard I had lifted from Dominic’s suit jacket when he had leaned over the crib earlier that evening. It was a master bypass token, stamped with the syndicate’s black falcon crest.

I slipped out of the nursery, closing the heavy oak door until the latch clicked shut without a whisper.

The second-floor corridor was an endless tunnel of shadow.

Portraits of dead Vale ancestors—men with cruel, predatory eyes and women with hollow, painted smiles—watched me from the paneled walls. At the end of the hall stood the double oak doors of the north wing, bound in heavy black iron straps and secured by an electronic biometric scanner and three mechanical deadbolts.

I stepped up to the doors. The air here was ten degrees colder, smelling faintly of mold, dried copper, and industrial bleach.

I held the master keycard to the scanner.

The LED flashed from crimson to an eerie, surgical green.

Click. Whirrr. Thump.

The three mechanical deadbolts retracted with a sound like a rifle bolt chambering a round.

I pushed the heavy door open three inches.