The Rhythm of the Boiler

The steam from the shower was thick and comforting, wrapping around me like a familiar blanket. My voice hummed a tune I had picked up from an old radio station, something about knocks on ceilings and pipes. The acoustics of the bathroom made it sound better than it was, and I was lost in the rhythm when I felt a chill that had nothing to do with the temperature.

I stopped singing, but the words still hung in the air. Then I heard it: two sharp metallic clangs, perfectly timed to the beat, as if someone was answering me from the other side of the wall. My heart jumped. I pressed my ear to the tiled wall, but all I could hear was the drip of the faucet and the hum of the building’s old boiler.

I tried to laugh it off. My roommate, Elara, had gone home to her parents’ farm for the harvest, and the other two were out of town for a seminar. I was alone on the fourth floor of the Ashford Hall dormitory, a building notorious for its creaking floors and unreliable heating. The pipes were all hidden behind drywall, so there was no way anyone could have knocked on them unless they were inside the walls.

I finished my shower quickly, the song still on my lips. As I stepped onto the bathmat, I noticed something odd: a single drop of water falling from the ceiling vent, hitting the floor with a soft tick. I looked up, but the vent was dry. I shrugged it off and wrapped a towel around myself, trying to ignore the goosebumps that prickled my skin.

Later that night, as I lay in bed reading, I heard it again. Three steady knocks, slow and deliberate, coming from the heating vent above my desk. I froze, the book trembling in my hands. I counted the knocks. Three. That was the signal for a meeting in the hallway. I shook my head, forcing a laugh. ‘It’s just the boiler,’ I told myself, but I didn’t believe it.

Curiosity got the better of me. I slipped into my robe, grabbed my phone, and tiptoed to the door. The hallway was dimly lit by a single flickering bulb. The air was cold, and my breath fogged. I saw a shadow move at the far end, near the stairwell. It was tall and thin, like a person, but it swayed slightly, as if it had no bones. I felt a primal urge to retreat, but my feet seemed rooted.

The shadow began to move toward me, and as it got closer, I saw it was not a person at all. It was a figure made of steam, its shape constantly shifting, with hollow eyes that seemed to drink the light. It emitted a hiss, like a kettle, and I smelled rust and mold. It raised a hand, and I saw droplets of water fall from its fingers, each one hitting the floor with a faint clang.

‘You sang the song,’ it said, its voice a chorus of dripping pipes. ‘Now you must answer the call.’ I backed away, but the door behind me was locked. The steam figure began to advance, and I noticed that the knocks were coming from its chest, like a heartbeat. Three times. Then twice. Then three again.

I didn’t remember running, but I found myself in the basement, shivering in the dark. The boiler stood in the corner, its metal skin covered in rust and grime. The pressure gauge was pinned, and the pipes groaned. I realized then that this building had been built over an old mining shaft, and the boiler was built to mimic the heartbeat of something that slumbered beneath. The song was not a song; it was a summoning ritual.

I tried to speak, to apologize, but the air was thick with steam. The figure materialized behind me, its cold hands on my shoulders. ‘You will keep the rhythm,’ it whispered. ‘Forever.’

I woke up in my bed the next morning, drenched in sweat. I thought it was a nightmare until I heard the knocks coming from the vent in my ceiling. Three times. Then twice. I buried my head under my pillow, but the knocks didn’t stop. They grew louder, demanding a response.

Now, every day at the same time, I hear the rhythm. I have stopped singing, but the pattern continues. The other residents don’t seem to notice, except for the occasional complaint about the noise. But I know the truth. The song is a heartbeat, and I have joined the dead who tend to the boiler. I am just the latest to answer, and I will be here until someone else sings the wrong words. But I will never sing again. I will stay silent, and listen to the knocks, forever.