The clock on the nightstand read 2:14 AM when I was ripped from a dreamless sleep by a sound I’d never heard from him before—a low, guttural growl that vibrated through the floorboards. My dog, a scruffy terrier mix named Biscuit, had been curled at my feet, but now he stood rigid at the foot of the bed, his hackles raised, ears pinned back. He wasn’t barking yet; he was staring at the hallway that led to the living room, his whole body trembling.
‘Biscuit, what is it?’ I mumbled, but he ignored me. A second later, a sharp, frantic bark exploded from his throat, and he bolted off the bed, claws skittering on the hardwood. I heard him skid around the corner and then the rapid-fire yapping began echoing from the living room. I groaned, swung my legs over the side, and padded after him, flicking on the hallway light. The bulb buzzed and flickered, casting everything in a sickly yellow that didn’t quite reach the corners.
‘Biscuit, shut up!’ I hissed, but he was planted in front of the sliding glass door that led to the backyard, barking at the darkness beyond. The backyard was a narrow strip of dead grass, bordered by a six-foot wooden fence. Beyond that lay the alley—a dirt path that the city used for trash pickup, and where, on occasion, the homeless pitched their tents. I peered out, expecting to see a shadow moving, a figure rummaging through the bins. But the yard was empty. The gate was closed. The only thing out there was the oppressive, humid heat of a Tucson summer night, and the faint hum of a distant air conditioner.
‘It’s nothing, boy. Just a coyote or something,’ I said, trying to soothe him. But Biscuit wouldn’t stop. He was fixated on a spot near the far corner of the yard, where an old mesquite tree drooped its branches. I squinted, trying to make sense of his intensity. Then I noticed the dog door—a plastic flap set into the wall beside the sliding glass door. Biscuit never used it. He was a pampered little beast who preferred to be let out on a leash. But now, he wasn’t even looking at the dog door. He was staring at the tree.
A chill ran down my spine, not from the cold, but from a sudden, irrational sense that something was wrong. Not just with the yard, but with the house itself. The air felt thick, charged, like before a thunderstorm. I called his name again, and this time he turned to look at me, his eyes wide and pleading. Then he did something bizarre: he whimpered, and trotted back to the bedroom, but instead of jumping on the bed, he sat on the floor, facing the door, his body rigid.
I followed him, uneasy. ‘You’re being weird,’ I said, trying to laugh it off. I was about to get back under the covers when I heard it—a faint, almost imperceptible sound from the living room. A low, rhythmic hum, like the drone of a refrigerator, but with a pulsing, almost musical quality. I froze, listening. It seemed to come from nowhere and everywhere. I walked back into the living room, and the sound grew louder, but when I stopped in the center of the room, it faded to a whisper. The only thing there was an old baby monitor I’d forgotten I had, sitting on the bookshelf. I never had kids, but the previous owners had left it, and I’d never bothered to throw it out. The red light on the monitor was glowing dimly, and the speaker crackled with static.
I walked over and picked it up. The static wasn’t the usual white noise; it had a rhythm, a pattern. I turned the volume down, and as I did, I saw through the window that the neighbor’s porch light flickered and went out. The alley beyond was swallowed in darkness. I put the monitor down, and the static seemed to intensify, forming a low, guttural murmur. I leaned closer, and I could have sworn I heard a voice—not human, but something like a drone, a vibration that seemed to come from the earth itself.
Biscuit let out a sharp yelp from the bedroom. I ran back, and he was now on the bed, shaking, his eyes fixed on the ceiling. I followed his gaze, but there was nothing there—just the cracked plaster and a faint water stain. The humming stopped. The house fell silent again, but the silence felt heavy, wrong. I was about to chide myself for being jumpy when I noticed a patch of darkness in the corner of the ceiling, a darkness that seemed deeper than the shadows around it. It was there for a second, then gone.
I didn’t sleep that night. I sat on the bed, Biscuit pressed against my side, staring at the door. The rest of the night passed in a haze of half-heard sounds and flickering lights. In the morning, I chalked it up to anxiety—the heat, the stress of work, a sensitive dog. But when I walked into the living room, the baby monitor was off. The battery was dead. I hadn’t touched it since the night before. And on the floor beneath the bookshelf, there was a small, dark object that hadn’t been there before: a child’s wooden block, worn and splintered, with the letter ‘A’ carved into it. I’ve lived alone for years. No one has been in this house. But as I picked it up, I could feel a faint vibration in the wood, a hum that seemed to match the one I’d heard in the static. And from the backyard, I heard Biscuit bark, once, sharp, as if warning me not to keep it.