The Cinderblock Hum

The Cinderblock Hum chronicles the haunting of a family in the Sunvale Courts, a low-income housing complex on the outskirts of Pueblo, Colorado. Built in the late 1960s, the complex was a maze of two-story cinderblock buildings, each with identical pale yellow doors and rusted metal railings. Our unit, 4B, was on the second floor, a cramped two-bedroom with a hallway so narrow you had to turn sideways to pass the linen closet. My daughter, Mira, was born there in our second year; my partner, Tomas, moved in three years later, and we stayed until the end, when the walls themselves seemed to press in.

The troubles began subtly. At first, it was just the hum. Every night, around 3 a.m., a low, resonant hum would vibrate through the floor, as if the building itself were a giant tuning fork. It wasn’t the furnace or the pipes; we checked. It would last exactly eleven minutes, then stop. I’d lie awake, counting, feeling the vibration in my teeth. Tomas thought it was my imagination, but Mira, then four, would wake up crying, pointing at the corner of her room. ‘The man,’ she’d say, ‘the man is humming.’

One evening, I found a child’s drawing Mira had left on the kitchen table. It was a crayon sketch of our apartment, but the walls were drawn as open rectangles, and inside them, skeletal figures with hollow eyes were stacked like cordwood. In the center, a single figure with a gaping mouth, emitting squiggly lines. She titled it ‘The Hummers.’ I asked her who they were. She shrugged and said, ‘They’re in the walls. They sing to each other through the cinderblocks.’

I tried to research the complex’s history. The landlord, a frail man named Mr. Gable, was evasive. He said the place had ‘character’ and warned against ‘poking around.’ But a neighbor, a grizzled Vietnam vet named Ray, told me that the complex was built over the site of a former TB sanatorium. ‘They used to burn the bodies,’ he said, lighting a cigarette. ‘The ashes were mixed into the concrete. That’s why the humming. It’s them, trying to speak.’

I laughed it off, but that night, I pressed my ear to the living room wall. The hum started, but this time, it seemed to resonate with my own heartbeat. I felt a cold draft seep from a hairline crack in the plaster. Then, through the hum, I heard a voice—a woman’s whisper, urgent and pleading. ‘Let them out… they’re trapped…’ I yanked my ear away, my skin crawling.

Mira became our canary. She started having night terrors, screaming about ‘the wet man’ who stood in the corner, dripping water and leaving dark stains on the carpet. The stains, though, were real. They appeared every morning, no matter how many times I scrubbed. A forensic friend of Tomas’s tested a sample and found a high concentration of calcium and strange organic compounds—like bone dust.

Tomas grew skeptical. He claimed the hum was just a malfunctioning swamp cooler and the stains were from a leaky pipe. But one night, he woke me up, his face pale. ‘There’s someone in the hallway,’ he said. I heard it too: footsteps, slow and heavy, coming from the front door, which was locked. They stopped at our bedroom door. We held our breath. Then, a voice—deep, guttural, like rocks grinding—whispered through the crack: ‘You have what is ours.’

We tried to leave. We packed our essentials and headed for the door, but when Tomas turned the knob, it was ice cold and wouldn’t budge. The hum grew louder, now a chorus of dissonant notes, like a funeral dirge played off-key. Mira began to hum along, her eyes rolled back, her body swaying. I shook her, and she blinked, frightened. ‘They sing me to sleep,’ she said, ‘but they’re lonely.’

Desperate, I confronted Mr. Gable. He finally admitted that in the 1970s, a family had died in unit 4B—a mother, father, and two children—in a murder-suicide. ‘The father was schizophrenic,’ he said. ‘He thought the voices in the walls were real. He tore them open looking for the source. The bodies were never properly removed; the landlord at the time just patched the walls with whatever was handy.’ I asked why he’d told us. He sighed. ‘Because they’re still here. They’ve never stopped humming. And if you hear their song, they know you can hear them. They’ll want you to join.’

We spent one last night in that apartment. The hum was constant now, a physical presence pressing on our eardrums. At 3 a.m., the front door swung open on its own, revealing the dark hallway. From the darkness, a child’s voice called out, ‘Mira, come play.’ Mira took a step forward, her eyes glassy. I grabbed her, and we stumbled into the hall, fleeing down the stairs, the hum chasing us like a swarm of bees. We didn’t stop until we reached the car, and we never returned.

In the years since, I’ve tried to forget, but the hum lingers in my ears. Sometimes, when it’s quiet, I hear it again—that low, vibrating note. And I know, with a certainty that chills me to the bone, that the walls of Sunvale Courts are still there, humming for new tenants, waiting for someone else to listen.